def testgetsample(data): for i in range(3): if audioop.getsample(data[0], 1, i) <> i or \ audioop.getsample(data[1], 2, i) <> i or \ audioop.getsample(data[2], 4, i) <> i: return 0 return 1
def recv():
global inp, etc, trig_this_time, trig_last_time, sin
# get audio
#l,data = inp.read()
peak = 0
while 1:
frames = []
for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
data = stream.read(CHUNK)
frames.append(data)
try:
avg = audioop.getsample(data, 2, i * 3)
avg += audioop.getsample(data, 2, (i * 3) + 1)
avg += audioop.getsample(data, 2, (i * 3) + 2)
avg = avg / 3
if (avg > 20000):
trig_this_time = time.time()
if (trig_this_time - trig_last_time) > .05:
etc.audio_trig = True
trig_last_time = trig_this_time
if avg > peak:
etc.audio_peak = avg
peak = avg
# if the trigger button is held
if (etc.trig_button):
etc.audio_in[i] = sin[i]
else:
etc.audio_in[i] = avg
except:
pass
def read_wav_file(name):
"""
This function reads a WAV file named 'name' and returns
an array containing integral samples.
"""
# Open wave file for reading
w = wave.open(name, 'rb')
nchannels = w.getnchannels()
# Read the wave as a raw string. Caution, this could use a
# lot of memory!
raw = w.readframes(w.getnframes())
# Convert to a list of samples
# Mono
if nchannels == 1:
data = empty(w.getnframes(), dtype=numpy.int16)
for i in xrange(0, w.getnframes()):
data[i] = audioop.getsample(raw,w.getsampwidth(),i)
elif nchannels == 2:
data = empty(2*w.getnframes(), dtype=numpy.int16)
for i in xrange(0, w.getnframes()):
data[i] = audioop.getsample(raw,w.getsampwidth(),i)
data = array([data[0::2],data[1::2]], dtype=numpy.int16)
return data
def recv() :
global inp, etc, trig_this_time, trig_last_time, sin
# get audio
l,data = inp.read()
peak = 0
while l:
for i in range(0,100) :
try :
avg = audioop.getsample(data, 2, i * 3)
avg += audioop.getsample(data, 2, (i * 3) + 1)
avg += audioop.getsample(data, 2, (i * 3) + 2)
avg = avg / 3
if (avg > 20000) :
trig_this_time = time.time()
if (trig_this_time - trig_last_time) > .05:
etc.audio_trig = True
trig_last_time = trig_this_time
if avg > peak :
etc.audio_peak = avg
peak = avg
# if the trigger button is held
if (etc.trig_button) :
etc.audio_in[i] = sin[i]
else :
etc.audio_in[i] = avg
except :
pass
l,data = inp.read()
def test_getsample(self):
for w in 1, 2, 4:
data = packs[w](0, 1, -1, maxvalues[w], minvalues[w])
self.assertEqual(audioop.getsample(data, w, 0), 0)
self.assertEqual(audioop.getsample(data, w, 1), 1)
self.assertEqual(audioop.getsample(data, w, 2), -1)
self.assertEqual(audioop.getsample(data, w, 3), maxvalues[w])
self.assertEqual(audioop.getsample(data, w, 4), minvalues[w])
def test_getsample(self):
for w in 1, 2, 4:
data = packs[w](0, 1, -1, maxvalues[w], minvalues[w])
self.assertEqual(audioop.getsample(data, w, 0), 0)
self.assertEqual(audioop.getsample(data, w, 1), 1)
self.assertEqual(audioop.getsample(data, w, 2), -1)
self.assertEqual(audioop.getsample(data, w, 3), maxvalues[w])
self.assertEqual(audioop.getsample(data, w, 4), minvalues[w])
def testgetsample(data):
if verbose:
print 'getsample'
for i in range(3):
if audioop.getsample(data[0], 1, i) != i or \
audioop.getsample(data[1], 2, i) != i or \
audioop.getsample(data[2], 4, i) != i:
return 0
return 1
def testgetsample(data):
if verbose:
print 'getsample'
for i in range(3):
if audioop.getsample(data[0], 1, i) != i or \
audioop.getsample(data[1], 2, i) != i or \
audioop.getsample(data[2], 4, i) != i:
return 0
return 1
def recv():
global client, inp, etc, trig_this_time, trig_last_time, sin
if aout_norns:
# get audio (with 16 bit signed format)
data_l = 32767 * inp[0].get_array()
data_r = 32767 * inp[1].get_array()
else:
# get audio from alsa
l, data = inp.read()
if l > 0:
ldata = audioop.tomono(data, 2, 1, 0)
rdata = audioop.tomono(data, 2, 0, 1)
peak = 0
# try :
for i in range(0, 100):
avg_l = 0
avg_r = 0
for j in range(3):
if aout_norns:
avg_l += data_l[3 * i + j]
avg_r += data_r[3 * i + j]
else:
if l > 0:
avg_l += audioop.getsample(ldata, 2, (i * 3) + j)
avg_r += audioop.getsample(rdata, 2, (i * 3) + j)
# except :
# pass
avg_l = avg_l / 3
avg_r = avg_r / 3
avg = (avg_l + avg_r) / 2
# scale it
avg = int(avg * etc.audio_scale)
avg_l = int(avg_l * etc.audio_scale)
avg_r = int(avg_r * etc.audio_scale)
if (avg > 20000):
trig_this_time = time.time()
if (trig_this_time - trig_last_time) > .05:
if etc.audio_trig_enable: etc.audio_trig = True
trig_last_time = trig_this_time
if avg > peak:
etc.audio_peak = avg
peak = avg
# if the trigger button is held
if (etc.trig_button):
etc.audio_in[i] = sin[i]
etc.audio_left[i] = sin[i]
etc.audio_right[i] = sin[i]
else:
etc.audio_in[i] = avg
etc.audio_left[i] = avg_l
etc.audio_right[i] = avg_r
def analyze(self):
l,data = self.inp.read()
#print l
if l:
i = 0
for x in self.indizes:
try:
self.wave[i] = audioop.getsample(data,2,i)/32767.0
self.sample[i] = audioop.getsample(data,2,i)
except audioop.error:
break
i = i+1
self.freq[self.indizes] = 0
self.bands[[0,1,2]] = 0
fftw3.execute(self.plan)
ilc = self.nfreq * (self.low_cut_f/ (self.rate*0.5)) - 1
ihc = self.nfreq * (self.high_cut_f/ (self.rate*0.5)) - 1
ilc = max(ilc, 1)
nlow = int(ilc)
nmid = int(ihc - ilc)
nhigh = int(self.nfreq - nmid)
#print nlow, nmid, nhigh
for i in range(self.nfreq):
self.spect[i] = math.sqrt(self.freq[i].real*self.freq[i].real + self.freq[i].imag*self.freq[i].imag) * math.log1p(i+2)
self.spect_flux[i] = self.spect[i] - self.spect_old[i]
self.spect_old[i] = self.spect[i]
self.spect_flux[i] = max(self.spect_flux[i], 0.0)
if((i < ilc) and (i < ihc)):
self.bands[0] += self.spect_flux[i]/nlow
elif((i<ihc) and (i < self.nfreq)):
self.bands[1] += self.spect_flux[i]/nmid
else:
self.bands[2] += self.spect_flux[i]/nhigh
for i in [0,1,2]:
temp = max(self.bands[i], 0,0)
old_temp = self.bands_avg[i]
self.bands[i] = max((temp - old_temp - self.amp_thres), 0,0)
if(self.nframe > 1):
if(self.bands[i] == 0): self.bands_avg[i] = temp*0.15 + self.bands_avg[i]*0.85
if(self.bands[i] > self.bands_s[i]):
self.bands_s[i] = self.bands[i]
else:
self.bands_s[i] = self.bands_s[i] * 0.15 + self.bands[i]*0.85
else:
self.bands_avg[i] = temp
self.bands_s[i] = self.bands[i]
self.nframe = self.nframe + 1
def capture(self): midTermBufferSize = int(self.midTermBufferSizeSec * self.Fs) allData = [] maxPwmValue = 0 minPwmValue = 0 midTermBuffer = [] curWindow = [] while len(allData) < self.duration * self.Fs: time.sleep(0.01) l, data = self.inp.read() if l: for i in range(l): curWindow.append(audioop.getsample(data, 2, i)) if (len(curWindow) + len(midTermBuffer) > midTermBufferSize): samplesToCopyToMidBuffer = midTermBufferSize - len(midTermBuffer) else: samplesToCopyToMidBuffer = len(curWindow) midTermBuffer = midTermBuffer + curWindow[0:samplesToCopyToMidBuffer]; del(curWindow[0:samplesToCopyToMidBuffer]) pwm = audioop.rms(data, 2) if pwm < minPwmValue or minPwmValue == 0: minPwmValue = pwm if pwm > maxPwmValue or maxPwmValue == 0: maxPwmValue = pwm if len(midTermBuffer) == midTermBufferSize: allData = allData + midTermBuffer midTermBuffer = [] return allData, minPwmValue, maxPwmValue
def gendata2():
if verbose:
print 'getsample'
if audioop.getsample('\0\1', 2, 0) == 1:
return '\0\0\0\1\0\2'
else:
return '\0\0\1\0\2\0'
def __init__(self, fname, newrate=0):
"""Initializes an audio file from an uncompressed wavefile on disk.
The file is converted to mono, and if newrate is positive, then the rate is converted"""
import wave, audioop
try: # see if we have numpy
from numpy import array
self.numpy = 1
except ImportError:
self.numpy = 0
# read data
f = wave.open(fname, 'rb')
nchans, w, fps, nframes, comptype, compname = f.getparams()
print "Read audio file %s with %d chans, %d width, %d fps and %d frames" % (
fname, nchans, w, fps, nframes)
self.width, self.fps = w, fps
self.dat = f.readframes(nframes)
print " Original data length was %d" % (len(self.dat))
# convert to mono and (optionally) convert the rate
self.dat = audioop.tomono(self.dat, w, 0.5, 0.5)
print " After mono, data length is %d" % (len(self.dat))
if newrate > 0:
self.dat, junk = audioop.ratecv(self.dat, w, 1, fps, newrate, None)
self.fps = newrate
print " Converted to new rate %s, and data length is now %d" % (
self.fps, len(self.dat))
# now extract the data into a simple array
from audioop import getsample
self.dat = [
abs(getsample(self.dat, w, i)) for i in range(len(self.dat) // w)
]
print " Final data length is now of length %s" % (len(self.dat), )
if self.numpy:
self.dat = array(self.dat)
def __init__(self, fname, newrate=0):
"""Initializes an audio file from an uncompressed wavefile on disk.
The file is converted to mono, and if newrate is positive, then the rate is converted"""
import wave, audioop
try: # see if we have numpy
from numpy import array
self.numpy = 1
except ImportError:
self.numpy = 0
# read data
f = wave.open(fname, "rb")
nchans, w, fps, nframes, comptype, compname = f.getparams()
print "Read audio file %s with %d chans, %d width, %d fps and %d frames" % (fname, nchans, w, fps, nframes)
self.width, self.fps = w, fps
self.dat = f.readframes(nframes)
print " Original data length was %d" % (len(self.dat))
# convert to mono and (optionally) convert the rate
self.dat = audioop.tomono(self.dat, w, 0.5, 0.5)
print " After mono, data length is %d" % (len(self.dat))
if newrate > 0:
self.dat, junk = audioop.ratecv(self.dat, w, 1, fps, newrate, None)
self.fps = newrate
print " Converted to new rate %s, and data length is now %d" % (self.fps, len(self.dat))
# now extract the data into a simple array
from audioop import getsample
self.dat = [abs(getsample(self.dat, w, i)) for i in range(len(self.dat) // w)]
print " Final data length is now of length %s" % (len(self.dat),)
if self.numpy:
self.dat = array(self.dat)
def gendata2():
if verbose:
print 'getsample'
if audioop.getsample('\0\1', 2, 0) == 1:
return '\0\0\0\1\0\2'
else:
return '\0\0\1\0\2\0'
def read(self):
buffer_size = self.rate / 10
data = self.wav.readframes(buffer_size)
if not data:
raise EOFError("End of input file")
samples = [audioop.getsample(data, self.width, n) for n in range(0, len(data)/self.width)]
time.sleep(float(buffer_size)/self.rate)
return len(samples), samples
def unpack(data):
"""
This function extracts a raw byte string into an array of
16-bit integers.
"""
undata = empty(len(data)/2, dtype=numpy.int16)
for i in xrange(0, len(data)/SAMPLE_WIDTH):
undata[i] = audioop.getsample(data,SAMPLE_WIDTH,N_CHANNELS)
def unpack(data):
"""
This function extracts a raw byte string into an array of
16-bit integers.
"""
import audioop
undata = numpy.empty(len(data) / 2, dtype=numpy.int16)
for i in xrange(0, len(data) / SAMPLE_WIDTH):
undata[i] = audioop.getsample(data, SAMPLE_WIDTH, i)
return undata
def getFrame(self):
''' Retrurn a list of self.frameSize audio samples '''
frame = []
# Read data from device
l,data = self.inp.read()
if l:
#print "got %d samples" % (l)
for n in range(l):
frame.append(audioop.getsample(data,2,n))
else:
print "no data returned from getFrame"
return frame
def getFrame(self):
''' Retrurn a list of self.frameSize audio samples '''
frame = []
# Read data from device
l, data = self.inp.read()
if l:
#print "got %d samples" % (l)
for n in range(l):
frame.append(audioop.getsample(data, 2, n))
else:
print "no data returned from getFrame"
return frame
def raw_to_list(samples):
assert PCM_FORMAT == alsaaudio.PCM_FORMAT_S16_LE
res = []
width = 2
num_samples = len(samples) / width
for idx in range(num_samples):
sample = samples[idx * width : (idx + 1) * width]
num = sample_to_int(sample)
assert num == audioop.getsample(samples, width, idx)
assert int_to_sample(num) == sample
res.append(num)
return res
def test_getsample(self):
for w in (1, 2, 3, 4):
data = packs[w](0, 1, -1, maxvalues[w], minvalues[w])
self.assertEqual(audioop.getsample(data, w, 0), 0)
self.assertEqual(audioop.getsample(bytearray(data), w, 0), 0)
self.assertEqual(audioop.getsample(memoryview(data), w, 0), 0)
self.assertEqual(audioop.getsample(data, w, 1), 1)
self.assertEqual(audioop.getsample(data, w, 2), -1)
self.assertEqual(audioop.getsample(data, w, 3), maxvalues[w])
self.assertEqual(audioop.getsample(data, w, 4), minvalues[w])
def input(self,data):
recording = data['recording']
l = len(recording)
samples = scipy.zeros(l / 2)
fft = scipy.zeros(l / 2)
for i in range(0, l / 2):
samples[i]=audioop.getsample(recording, 2, i)
fft = scipy.fft(samples)
fft = fft[:len(fft) / 2]
fft = abs(fft)
fft *= .00005
data['fft'] = fft
self.output(data)
def callback(in_data, frame_count, time_info, status):
global inp, etc, trig_this_time, trig_last_time, sin
data = in_data
peak = 0
try:
#print('range', int(RATE / CHUNK * RECORD_SECONDS))
#print('data',len(data))
for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
avg = audioop.getsample(data, 2, i * 3)
avg += audioop.getsample(data, 2, (i * 3) + 1)
avg += audioop.getsample(data, 2, (i * 3) + 2)
avg = avg / 3
if (avg > 1000):
trig_this_time = time.time()
a = trig_this_time # - trig_last_time
#print(a)
#print(avg)
if (trig_this_time - trig_last_time) > .05:
etc.audio_trig = True
trig_last_time = trig_this_time
if avg > peak:
etc.audio_peak = avg
peak = avg
# if the trigger button is held
#print(etc.trig_button)
if (etc.trig_button):
etc.audio_in[i] = sin[i]
else:
#print(etc.audio_in)
#print(len(etc.audio_in))
#print(i)
etc.audio_in[i] = avg
except Exception as e:
print('ERROR!!! ', e)
pass
return (data, pyaudio.paContinue)
def get_all_samples(data):
allsamples=[]
index=0
while True:
try:
index=index+1
sample=audioop.getsample(data,2,index)
sample_8a = sample & 0xff
sample_8b = (sample >> 8) & 0xff
allsamples.append(int(str(sample_8a)))
allsamples.append(int(str(sample_8b)))
except:
break;
return allsamples;
def voiceInput(self,Bs):
inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE,alsaaudio.PCM_NONBLOCK)
inp.setchannels(1)
inp.setrate(self.Fs)
inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
inp.setperiodsize(512)
midTermBufferSize = int((self.Fs)*Bs)
midTermBuffer = []
curWindow = []
while 1:
l,data = inp.read()
#TODO NOISE Cancellation
if l:
for i in range(len(data)/2):
curWindow.append(audioop.getsample(data, 2, i))
if (len(curWindow)+len(midTermBuffer)>midTermBufferSize):
samplesToCopyToMidBuffer = midTermBufferSize - len(midTermBuffer)
else:
samplesToCopyToMidBuffer = len(curWindow)
midTermBuffer = midTermBuffer + curWindow[0:samplesToCopyToMidBuffer]
del(curWindow[0:samplesToCopyToMidBuffer])
if len(midTermBuffer) == midTermBufferSize:
midTermBufferArray = np.int16(midTermBuffer)
#TODO Noise Filtering
#filtb, filta = butter_bandpass(lowcut,highcut,Fs,8)
#midTermBufferArray = filtfilt(filtb , filta , midTermBufferArray)
#wavfile.write(curWavFileName, Fs, midTermBufferArray)
print midTermBufferArray
segmentsArray,ProbOnSet = self.audioSVMSegmentation(midTermBufferArray,0.02,0.02,plot = False)
x = np.array([])
for segments in segmentsArray:
if x.shape<=0:
x = midTermBufferArray[segments[0]*self.Fs:segments[1]*self.Fs]
continue
else:
x = np.hstack((x,midTermBufferArray[segments[0]*self.Fs:segments[1]*self.Fs]))
return x
def recordAudioSegments(request, RecordPath, BLOCKSIZE):
print "Press Ctr+C to stop recording"
RecordPath += os.sep
d = os.path.dirname(RecordPath)
if os.path.exists(d) and RecordPath != ".":
shutil.rmtree(RecordPath)
os.makedirs(RecordPath)
inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE, alsaaudio.PCM_NONBLOCK)
inp.setchannels(1)
inp.setrate(16000)
inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
inp.setperiodsize(512)
midTermBufferSize = int(16000 * BLOCKSIZE)
midTermBuffer = []
curWindow = []
elapsedTime = "%08.3f" % (time.time())
while 1:
l, data = inp.read()
if l:
for i in range(len(data) / 2):
curWindow.append(audioop.getsample(data, 2, i))
if (len(curWindow) + len(midTermBuffer) > midTermBufferSize):
samplesToCopyToMidBuffer = midTermBufferSize - len(
midTermBuffer)
else:
samplesToCopyToMidBuffer = len(curWindow)
midTermBuffer = midTermBuffer + curWindow[
0:samplesToCopyToMidBuffer]
del (curWindow[0:samplesToCopyToMidBuffer])
if len(midTermBuffer) == midTermBufferSize:
global F
# allData = allData + midTermBuffer
curWavFileName = RecordPath + os.sep + str(elapsedTime) + ".wav"
midTermBufferArray = numpy.int16(midTermBuffer)
wavfile.write(curWavFileName, 16000, midTermBufferArray)
# print "AUDIO OUTPUT: Saved " + curWavFileName
[Fs2,
x] = audioBasicIO.readAudioFile('./rec/' + curWavFileName[5:])
x = audioBasicIO.stereo2mono(x)
F = stFeatureExtraction(x, Fs2, Fs2 * 0.050, Fs2 * 0.025)
F = np.mean(F, axis=1)
print F
midTermBuffer = []
elapsedTime = "%08.3f" % (time.time())
def recordAudioSegments(RecordPath, BLOCKSIZE):
# This function is used for recording audio segments (until ctr+c is pressed)
# ARGUMENTS:
# - RecordPath: the path where the wav segments will be stored
# - BLOCKSIZE: segment recording size (in seconds)
#
# NOTE: filenames are based on clock() value
print "Press Ctr+C to stop recording"
RecordPath += os.sep
d = os.path.dirname(RecordPath)
if os.path.exists(d) and RecordPath != ".":
shutil.rmtree(RecordPath)
os.makedirs(RecordPath)
inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE, alsaaudio.PCM_NONBLOCK)
inp.setchannels(1)
inp.setrate(Fs)
inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
inp.setperiodsize(512)
midTermBufferSize = int(Fs * BLOCKSIZE)
midTermBuffer = []
curWindow = []
elapsedTime = "%08.3f" % (time.time())
while 1:
l, data = inp.read()
if l:
for i in range(len(data) / 2):
curWindow.append(audioop.getsample(data, 2, i))
if (len(curWindow) + len(midTermBuffer) > midTermBufferSize):
samplesToCopyToMidBuffer = midTermBufferSize - len(
midTermBuffer)
else:
samplesToCopyToMidBuffer = len(curWindow)
midTermBuffer = midTermBuffer + curWindow[
0:samplesToCopyToMidBuffer]
del (curWindow[0:samplesToCopyToMidBuffer])
if len(midTermBuffer) == midTermBufferSize:
# allData = allData + midTermBuffer
curWavFileName = RecordPath + os.sep + str(elapsedTime) + ".wav"
midTermBufferArray = numpy.int16(midTermBuffer)
wavfile.write(curWavFileName, Fs, midTermBufferArray)
print "AUDIO OUTPUT: Saved " + curWavFileName
midTermBuffer = []
elapsedTime = "%08.3f" % (time.time())
def recordAudioSegments(RecordPath, BLOCKSIZE): # This function is used for recording audio segments (until ctr+c is pressed) # ARGUMENTS: # - RecordPath: the path where the wav segments will be stored # - BLOCKSIZE: segment recording size (in seconds) # # NOTE: filenames are based on clock() value print "Press Ctr+C to stop recording" RecordPath += os.sep d = os.path.dirname(RecordPath) if os.path.exists(d) and RecordPath!=".": shutil.rmtree(RecordPath) os.makedirs(RecordPath) inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE,alsaaudio.PCM_NONBLOCK) inp.setchannels(1) inp.setrate(Fs) inp.setformat(alsaaudio.PCM_FORMAT_S16_LE) inp.setperiodsize(512) midTermBufferSize = int(Fs*BLOCKSIZE) midTermBuffer = [] curWindow = [] elapsedTime = "%08.3f" % (time.time()) while 1: l,data = inp.read() if l: for i in range(len(data)/2): curWindow.append(audioop.getsample(data, 2, i)) if (len(curWindow)+len(midTermBuffer)>midTermBufferSize): samplesToCopyToMidBuffer = midTermBufferSize - len(midTermBuffer) else: samplesToCopyToMidBuffer = len(curWindow) midTermBuffer = midTermBuffer + curWindow[0:samplesToCopyToMidBuffer]; del(curWindow[0:samplesToCopyToMidBuffer]) if len(midTermBuffer) == midTermBufferSize: # allData = allData + midTermBuffer curWavFileName = RecordPath + os.sep + str(elapsedTime) + ".wav" midTermBufferArray = numpy.int16(midTermBuffer) wavfile.write(curWavFileName, Fs, midTermBufferArray) print "AUDIO OUTPUT: Saved " + curWavFileName midTermBuffer = [] elapsedTime = "%08.3f" % (time.time())
def get_wav(fname): """ Given a filename of a wav, returns a tuple of the wav and its parameters. """ w = wave.open(fname) wp = w.getparams() wd = w.readframes(wp[3]) if wp[0] > 1: md = audioop.tomono(wd, wp[1], 1, 1) else: md = wd wav = [] for i in range(wp[3]): wav.append(audioop.getsample(md, wp[1], i)) wav = numpy.array(wav) return wav, wp
def get_wav(fname):
"""
Given a filename of a wav, returns a tuple of the wav and its parameters.
"""
w = wave.open(fname)
wp = w.getparams()
wd = w.readframes(wp[3])
if wp[0] > 1:
md = audioop.tomono(wd, wp[1], 1, 1)
else:
md = wd
wav = []
for i in range(wp[3]):
wav.append(audioop.getsample(md, wp[1], i))
wav = numpy.array(wav)
return wav, wp
def recv() :
global inp, etc, trig_this_time, trig_last_time, sin
# get audio
l,data = inp.read()
peak = 0
while l:
try :
ldata = audioop.tomono(data, 2, 1, 0)
rdata = audioop.tomono(data, 2, 0, 1)
for i in range(0,100) :
avg_l = 0
avg_r = 0
idx = i * 3
avg_l +=audioop.getsample(ldata,2,idx)
avg_r +=audioop.getsample(rdata,2,idx)
idx += 1
avg_l +=audioop.getsample(ldata,2,idx)
avg_r +=audioop.getsample(rdata,2,idx)
idx += 1
avg_l +=audioop.getsample(ldata,2,idx)
avg_r +=audioop.getsample(rdata,2,idx)
avg_l = avg_l / 3
avg_r = avg_r / 3
avg = (avg_l + avg_r) / 2
if (avg > 20000) :
trig_this_time = time.time()
if (trig_this_time - trig_last_time) > .05:
etc.audio_trig = True
trig_last_time = trig_this_time
if avg > peak :
etc.audio_peak = avg
peak = avg
# if the trigger button is held
if (etc.trig_button) :
etc.audio_in[i] = sin[i]
etc.audio_left[i] = sin[i]
etc.audio_right[i] = sin[i]
else :
etc.audio_in[i] = avg
etc.audio_left[i] = avg_l
etc.audio_right[i] = avg_r
except :
pass
l,data = inp.read()
def get_samples(file, buffer = 4096):
"""Renvoie les échantillons du fichier WAVE PCM signé spécifié sous la forme de réels entre -1 et 1"""
with open(file, "rb") as f:
f=wave.open(f, "rb")
assert f.getnchannels() == 1, "Only mono wav files are supported."
width = f.getsampwidth()
length = f.getnframes()/f.getframerate()
print(length, "seconds")
frames = None
max_amplitude = 1<<(8*width -1)
while frames != "":
frames = f.readframes(buffer*width)
for index in range(len(frames)//width):
sample = audioop.getsample(frames, width, index)
yield sample/max_amplitude
def fadein(self, seconds, start_volume=0.0):
"""Fade the start of the sample in from the starting volume (usually zero) in the given time."""
assert not self.__locked
faded = Sample.get_array(self.__samplewidth)
seconds = min(seconds, self.duration)
i = self.frame_idx(seconds)
begin = self.__frames[:i] # we fade this chunk
end = self.__frames[i:]
numsamples = len(begin)/self.__samplewidth
increase = 1-start_volume
for i in range(int(numsamples)):
amplitude = i*increase/numsamples+start_volume
s = audioop.getsample(begin, self.__samplewidth, i)
faded.append(int(s*amplitude))
begin = faded.tobytes()
if sys.byteorder == "big":
begin = audioop.byteswap(begin, self.__samplewidth)
self.__frames = begin + end
return self
def fadeout(self, seconds, target_volume=0.0):
"""Fade the end of the sample out to the target volume (usually zero) in the given time."""
assert not self.__locked
faded = Sample.get_array(self.__samplewidth)
seconds = min(seconds, self.duration)
i = self.frame_idx(self.duration-seconds)
begin = self.__frames[:i]
end = self.__frames[i:] # we fade this chunk
numsamples = len(end)/self.__samplewidth
decrease = 1-target_volume
for i in range(int(numsamples)):
amplitude = 1-(i/numsamples)*decrease
s = audioop.getsample(end, self.__samplewidth, i)
faded.append(int(s*amplitude))
end = faded.tobytes()
if sys.byteorder == "big":
end = audioop.byteswap(end, self.__samplewidth)
self.__frames = begin + end
return self
def start(self):
import alsaaudio, audioop
inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE)
inp.setchannels(1)
inp.setrate(rate)
inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
inp.setperiodsize(slen)
while True:
l,data = inp.read()
if l > 0:
ln = len(data)
samples = scipy.zeros(ln / 2)
fft = scipy.zeros(ln / 2)
for i in range(0, ln / 2):
samples[i]=audioop.getsample(data, 2, i)
self.output({ 'recording': samples, 'rate': rate, 'slen': slen })
time.sleep(.01)
def start(self):
import alsaaudio, audioop
inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE)
inp.setchannels(1)
inp.setrate(rate)
inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
inp.setperiodsize(slen)
while True:
l, data = inp.read()
if l > 0:
ln = len(data)
samples = scipy.zeros(ln / 2)
fft = scipy.zeros(ln / 2)
for i in range(0, ln / 2):
samples[i] = audioop.getsample(data, 2, i)
self.output({'recording': samples, 'rate': rate, 'slen': slen})
time.sleep(.01)
def freqsFromFrag(frag, sampwidth, rate):
samples = [audioop.getsample(frag, sampwidth, i) for i in range(len(frag) / sampwidth)]
freqs = {}
pos0 = samples[0] > 0
t0 = 0.0
t1 = 0.0
for i in range(1, len(samples)):
pos1 = samples[i] > 0
# out('%5s - %5s - %8.2f - %8.2f - %8.2f' % (pos0, pos1, t0, t1, samples[i]))
if pos0 != pos1:
t2 = i - 1.0 + samples[i - 1] / (samples[i - 1] - samples[i])
if t2 > t1 > t0 > 0.0:
freq = float(rate) / (t2 - t0)
if not freqs.has_key(freq):
freqs[freq] = 1
else:
freqs[freq] += 1
pos0 = pos1
t0 = t1
t1 = t2
return freqs
def read_processed_chunk(self):
data = self.read_raw_chunk()
return [self.noise_cancel(audioop.getsample(data, 2, x)) for x in range(0, self.chunk_size)]
def get_samples(data, width=2):
return list(audioop.getsample(data, width, i) for i in xrange(len(data) / width))
def gendata2():
if audioop.getsample('\0\1', 2, 0) == 1:
return '\0\0\0\1\0\2'
else:
return '\0\0\1\0\2\0'
def test_getsample(self):
for i in range(3):
self.assertEqual(audioop.getsample(data[0], 1, i), i)
self.assertEqual(audioop.getsample(data[1], 2, i), i)
self.assertEqual(audioop.getsample(data[2], 4, i), i)
def gendata2():
if audioop.getsample('\0\1', 2, 0) == 1:
return '\0\0\0\1\0\2'
else:
return '\0\0\1\0\2\0'
def test_getsample(self):
for i in range(3):
self.assertEqual(audioop.getsample(data[0], 1, i), i)
self.assertEqual(audioop.getsample(data[1], 2, i), i)
self.assertEqual(audioop.getsample(data[2], 4, i), i)
def neuralNetClassidication(duration, midTermBufferSizeSec, modelName):
n_dim = 68
n_classes = 2
n_hidden_units_one = 280
n_hidden_units_two = 300
sd = 1 / numpy.sqrt(n_dim)
learning_rate = 0.01
X = tf.placeholder(tf.float32, [None, n_dim])
Y = tf.placeholder(tf.float32, [None, n_classes])
W_1 = tf.Variable(tf.random_normal([n_dim, n_hidden_units_one],
mean=0,
stddev=sd),
name="W_1")
b_1 = tf.Variable(tf.random_normal([n_hidden_units_one], mean=0,
stddev=sd),
name="b_1")
h_1 = tf.nn.tanh(tf.matmul(X, W_1) + b_1)
W_2 = tf.Variable(tf.random_normal(
[n_hidden_units_one, n_hidden_units_two], mean=0, stddev=sd),
name="W_2")
b_2 = tf.Variable(tf.random_normal([n_hidden_units_two], mean=0,
stddev=sd),
name="b_2")
h_2 = tf.nn.sigmoid(tf.matmul(h_1, W_2) + b_2)
W = tf.Variable(tf.random_normal([n_hidden_units_two, n_classes],
mean=0,
stddev=sd),
name="W")
b = tf.Variable(tf.random_normal([n_classes], mean=0, stddev=sd), name="b")
y_ = tf.nn.softmax(tf.matmul(h_2, W) + b)
saver = tf.train.Saver()
cost_function = tf.reduce_mean(
-tf.reduce_sum(Y * tf.log(y_), reduction_indices=[1]))
optimizer = tf.train.GradientDescentOptimizer(learning_rate).minimize(
cost_function)
correct_prediction = tf.equal(tf.argmax(y_, 1), tf.argmax(Y, 1))
accuracy = tf.reduce_mean(tf.cast(correct_prediction, tf.float32))
cost_history = numpy.empty(shape=[1], dtype=float)
y_true, y_pred = None, None
inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE, alsaaudio.PCM_NONBLOCK)
inp.setchannels(1)
inp.setrate(Fs)
inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
inp.setperiodsize(512)
midTermBufferSize = int(midTermBufferSizeSec * Fs)
allData = []
midTermBuffer = []
curWindow = []
count = 0
with tf.Session() as sess:
# sess.run(init)
saver.restore(sess, modelName)
while len(allData) < duration * Fs:
# Read data from device
l, data = inp.read()
if l:
for i in range(l):
curWindow.append(audioop.getsample(data, 2, i))
if (len(curWindow) + len(midTermBuffer) > midTermBufferSize):
samplesToCopyToMidBuffer = midTermBufferSize - len(
midTermBuffer)
else:
samplesToCopyToMidBuffer = len(curWindow)
midTermBuffer = midTermBuffer + curWindow[
0:samplesToCopyToMidBuffer]
del (curWindow[0:samplesToCopyToMidBuffer])
if len(midTermBuffer) == midTermBufferSize:
count += 1
[mtFeatures,
stFeatures] = aF.mtFeatureExtraction(midTermBuffer, Fs,
2.0 * Fs, 2.0 * Fs,
0.020 * Fs, 0.020 * Fs)
features = numpy.array([mtFeatures[:, 0]])
y_pred = sess.run(tf.argmax(y_, 1), feed_dict={X: features})
if y_pred[0] == 0:
print "Class A"
else:
print "Class B"
allData = allData + midTermBuffer
plt.clf()
plt.plot(midTermBuffer)
plt.show(block=False)
plt.draw()
midTermBuffer = []
def recordAnalyzeAudio(duration, outputWavFile, midTermBufferSizeSec, modelName, modelType): ''' recordAnalyzeAudio(duration, outputWavFile, midTermBufferSizeSec, modelName, modelType) This function is used to record and analyze audio segments, in a fix window basis. ARGUMENTS: - duration total recording duration - outputWavFile path of the output WAV file - midTermBufferSizeSec (fix)segment length in seconds - modelName classification model name - modelType classification model type ''' if modelType=='svm': [Classifier, MEAN, STD, classNames, mtWin, mtStep, stWin, stStep, compute_beat] = aT.load_model(modelName) elif modelType=='knn': [Classifier, MEAN, STD, classNames, mtWin, mtStep, stWin, stStep, compute_beat] = aT.load_model_knn(modelName) else: Classifier = None inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE, alsaaudio.PCM_NONBLOCK) inp.setchannels(1) inp.setrate(Fs) inp.setformat(alsaaudio.PCM_FORMAT_S16_LE) inp.setperiodsize(512) midTermBufferSize = int(midTermBufferSizeSec * Fs) allData = [] midTermBuffer = [] curWindow = [] count = 0 while len(allData)<duration*Fs: # Read data from device l,data = inp.read() if l: for i in range(l): curWindow.append(audioop.getsample(data, 2, i)) if (len(curWindow)+len(midTermBuffer)>midTermBufferSize): samplesToCopyToMidBuffer = midTermBufferSize - len(midTermBuffer) else: samplesToCopyToMidBuffer = len(curWindow) midTermBuffer = midTermBuffer + curWindow[0:samplesToCopyToMidBuffer]; del(curWindow[0:samplesToCopyToMidBuffer]) if len(midTermBuffer) == midTermBufferSize: count += 1 if Classifier!=None: [mtFeatures, stFeatures, _] = aF.mtFeatureExtraction(midTermBuffer, Fs, 2.0*Fs, 2.0*Fs, 0.020*Fs, 0.020*Fs) curFV = (mtFeatures[:,0] - MEAN) / STD; [result, P] = aT.classifierWrapper(Classifier, modelType, curFV) print classNames[int(result)] allData = allData + midTermBuffer plt.clf() plt.plot(midTermBuffer) plt.show(block = False) plt.draw() midTermBuffer = [] allDataArray = numpy.int16(allData) wavfile.write(outputWavFile, Fs, allDataArray)
imgx = len(freqHistory)
imgy = len(freqHistory[0])
print "imgx=%d, imgy=%d" % (imgx, imgy)
imgArr = numpy.zeros(shape=(imgy, imgx))
for x in range(0, imgx):
for y in range(0, imgy):
imgArr[y, x] = freqHistory[x][y]
print "plotting image"
if (im == None):
pylab.xlabel("time (sec)")
pylab.ylabel("freq (Hz)")
pylab.xlim(0, historyLen)
pylab.ylim(0, 1000)
im = ax3.imshow(imgArr, aspect='auto')
im.set_cmap('prism')
else:
im = ax3.imshow(imgArr, aspect='auto')
# im.set_array(imgArr)
fig2.canvas.draw()
t_start = time.time()
samples = []
else:
# Read data from device
l, data = inp.read()
if l:
for n in range(l):
samples.append(audioop.getsample(data, 2, n))
#sys.stdout.write('.')
#sys.stdout.flush()
def recordAudioSegments(RecordPath, Bs, plot=False): #Bs: BlockSize """RecordPath += os.sep d = os.path.dirname(RecordPath) if os.path.exists(d) and RecordPath!=".": shutil.rmtree(RecordPath) os.makedirs(RecordPath)""" inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE,alsaaudio.PCM_NONBLOCK) inp.setchannels(1) inp.setrate(Fs) inp.setformat(alsaaudio.PCM_FORMAT_S16_LE) inp.setperiodsize(512) midTermBufferSize = int(Fs*Bs) midTermBuffer = [] curWindow = [] elapsedTime = "%08.3f" % (time.time()) while 1: l,data = inp.read() #TODO NOISE Cancellation #print "Now listening:" if l: for i in range(len(data)/2): curWindow.append(audioop.getsample(data, 2, i)) if (len(curWindow)+len(midTermBuffer)>midTermBufferSize): samplesToCopyToMidBuffer = midTermBufferSize - len(midTermBuffer) else: samplesToCopyToMidBuffer = len(curWindow) midTermBuffer = midTermBuffer + curWindow[0:samplesToCopyToMidBuffer] del(curWindow[0:samplesToCopyToMidBuffer]) if len(midTermBuffer) == midTermBufferSize: midTermBufferArray = numpy.int16(midTermBuffer) #curWavFileName = RecordPath + os.sep + str(elapsedTime) + ".wav" #print midTermBuffer.__class__ #TODO Noise Filtering #filtb, filta = butter_bandpass(lowcut,highcut,Fs,8) #midTermBufferArray = filtfilt(filtb , filta , midTermBufferArray) #wavfile.write(curWavFileName, Fs, midTermBufferArray) #TODO FeatureExtraction call to segmentation #TODO Add call to segment voice i.e. svmSegmentation function #adaptfilt.lms() try: segmentsArray,ProbOnSet = svmSegmentation(midTermBufferArray,Fs,0.05,0.05,plot = False) except: continue x = numpy.array([]) for segments in segmentsArray: if x.shape<=0: x = midTermBufferArray[segments[0]*Fs:segments[1]*Fs] continue else: x = numpy.hstack((x,midTermBufferArray[segments[0]*Fs:segments[1]*Fs])) if plot == 'seg': plotSegments(midTermBufferArray,Fs,segmentsArray,ProbOnSet) break Features = FeatureExtraction(midTermBufferArray,Fs,x.shape[0],x.shape[0]) #guiWrite(gui,"text") features = Features.T.tolist() for axis0 in xrange(0,features.__len__()): normalizedFeatures = [] for axis1 in xrange(0,features[axis0].__len__()): normalizedFeatures.append((features[axis0][axis1]-minlist[axis1])/denom[axis1]) #print normalizedFeatures plotdata = [] res = neuralNetwork.forward(normalizedFeatures) fig, ax =plt.subplots() ar = numpy.arange(7) print res barPlot = ax.bar(ar,res,0.35) plt.show() print "Happiness:",res[0],"Anger:",res[1],"Fear:",res[2],"Boredom:",res[3],"Disgust:",res[4],"Sadness:",res[5],"Neutral:",res[6] if plot == 'energy': plotEnergy(Features[1]) #print "AUDIO OUTPUT: Saved " + curWavFileName midTermBuffer = [] elapsedTime = "%08.3f" % (time.time())
def run(self): # Adapted from pyAudioAnalysis # [email protected]:tyiannak/pyAudioAnalysis.git # # Funtion records an audio segment of len RECORDING LEN # and stores it in record_path RecordPath = RECORD_PATH RecordPath += os.sep d = os.path.dirname(RecordPath) if os.path.exists(d) and RecordPath!=".": shutil.rmtree(RecordPath) os.makedirs(RecordPath) inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE,alsaaudio.PCM_NONBLOCK) inp.setchannels(1) inp.setrate(Fs) inp.setformat(alsaaudio.PCM_FORMAT_S16_LE) inp.setperiodsize(512) midTermBuffer = [] curWindow = [] elapsedTime = "%08.3f" % (time.time()) # Main event loop while True: while len(get_occupants()) == 0: logging.debug('Waiting for occupants') time.sleep(WAIT_FOR_OCCUPANT_TIME) logging.debug("Starting recording") #******************************************************************* while len(midTermBuffer) < midTermBufferSize: l,data = inp.read() if l: for i in range(len(data)/2): curWindow.append(audioop.getsample(data, 2, i)) if (len(curWindow)+len(midTermBuffer)>midTermBufferSize): samplesToCopyToMidBuffer = midTermBufferSize \ - len(midTermBuffer) else: samplesToCopyToMidBuffer = len(curWindow) midTermBuffer = midTermBuffer \ + curWindow[0:samplesToCopyToMidBuffer]; del(curWindow[0:samplesToCopyToMidBuffer]) #******************************************************************* logging.debug("Finnished recording") end_datetime = datetime.datetime.now() # allData = allData + midTermBuffer curWavFileName = RecordPath + os.sep + str(elapsedTime) + ".wav" midTermBufferArray = numpy.int16(midTermBuffer) wavfile.write(curWavFileName, Fs, midTermBufferArray) midTermBuffer = [] elapsedTime = "%08.3f" % (time.time()) # See who's in the room now occupants = get_occupants() if len(occupants) == 0: # Delete the recording, nobody present logging.debug('No occupants, deleting: ' + str(recording)) os.remove(recording) else: # Enqueue the file to be processed unprocessed_files.put((curWavFileName, occupants)) logging.debug('Enqueuing ' + str(curWavFileName) + ' : ' \ + str(unprocessed_files.qsize()) + ' items in queue') pass
from numpy import *
import wave
import audioop
wav_in=wave.open('phb.wav','r')
contents=wav_in.readframes(wav_in.getnframes())
# contents now holds all the samples in a long text string.
samples_list=[]; ctr=0
while 1:
try:
samples_list.append(audioop.getsample(contents,2,ctr))
# "2" refers to no. of bytes/sample, ctr is sample no. to take.
ctr+=1
except:
# We jump to here when we run out of samples
break
out_array=array(samples_list)
out_fft=fft.fft(out_array)
for i in out_fft:
print i
time_before = datetime.datetime.now()
left_over = 0
while not SongOver:
try:
# Read data from device
l, data = inp.read()
if l > 0:
mySamples = zeros(64)
myFFT = zeros(64)
myFFTAbs = zeros(16)
# copy the samples
for iLoop in range(0, 64):
mySamples[iLoop] = audioop.getsample(data, 2, iLoop)
myBigSamples[myBigSamplePos] = mySamples[iLoop]
myBigSamplePos += 1
# perform fft
myFFT = fft(mySamples)
s = ""
for iLoop in range(0, 64):
s += str(mySamples[iLoop]) + ","
#s += "\n"
fSamples.write(s)
for iLoop in range(0, 16):
myFFTAbs[iLoop] = abs(myFFT[iLoop])
def read(self):
data = self.stream.read(1024)
samples = [audioop.getsample(data, 2, n) for n in range(0, 1024)]
return samples
def get_samples(data):
return list(audioop.getsample(data, 2, i) for i in xrange(len(data) / 4))
def recordAnalyzeAudio(duration, outputWavFile, midTermBufferSizeSec,
modelName, modelType):
'''
recordAnalyzeAudio(duration, outputWavFile, midTermBufferSizeSec, modelName, modelType)
This function is used to record and analyze audio segments, in a fix window basis.
ARGUMENTS:
- duration total recording duration
- outputWavFile path of the output WAV file
- midTermBufferSizeSec (fix)segment length in seconds
- modelName classification model name
- modelType classification model type
'''
if modelType == 'neuralnet':
neuralNetClassidication(duration, midTermBufferSizeSec, modelName)
else:
if modelType == 'svm':
[
Classifier, MEAN, STD, classNames, mtWin, mtStep, stWin,
stStep, computeBEAT
] = aT.loadSVModel(modelName)
elif modelType == 'knn':
[
Classifier, MEAN, STD, classNames, mtWin, mtStep, stWin,
stStep, computeBEAT
] = aT.loadKNNModel(modelName)
else:
Classifier = None
inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE, alsaaudio.PCM_NONBLOCK)
inp.setchannels(1)
inp.setrate(Fs)
inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
inp.setperiodsize(512)
midTermBufferSize = int(midTermBufferSizeSec * Fs)
allData = []
midTermBuffer = []
curWindow = []
count = 0
# a sequence of samples
# process a sequence
# speed
# emergency vehicle detection what have they done? emergency vehicle classification patents
# plot features!!!
# patents extracted!
# latex literature review
# writing a paper
#
while len(allData) < duration * Fs:
# Read data from device
l, data = inp.read()
if l:
for i in range(l):
curWindow.append(audioop.getsample(data, 2, i))
if (len(curWindow) + len(midTermBuffer) > midTermBufferSize):
samplesToCopyToMidBuffer = midTermBufferSize - len(
midTermBuffer)
else:
samplesToCopyToMidBuffer = len(curWindow)
midTermBuffer = midTermBuffer + curWindow[
0:samplesToCopyToMidBuffer]
del (curWindow[0:samplesToCopyToMidBuffer])
if len(midTermBuffer) == midTermBufferSize:
count += 1
if Classifier != None:
[mtFeatures, stFeatures
] = aF.mtFeatureExtraction(midTermBuffer, Fs, 2.0 * Fs,
2.0 * Fs, 0.020 * Fs,
0.020 * Fs)
curFV = (mtFeatures[:, 0] - MEAN) / STD
[result, P] = aT.classifierWrapper(Classifier, modelType,
curFV)
print classNames[int(result)]
allData = allData + midTermBuffer
plt.clf()
plt.plot(midTermBuffer)
plt.show(block=False)
plt.draw()
midTermBuffer = []
allDataArray = numpy.int16(allData)
wavfile.write(outputWavFile, Fs, allDataArray)
def list_samples(sample_bytes, params):
return [
audioop.getsample(sample_bytes, params.nchannels, i)
for i in range(params.nframes)
]
start = time.time()
while True:
if time.time() - send_t > 1:
s.sendto(b'', ('255.255.255.255', 18294))
send_t = time.time()
try:
m = s.recvfrom(1024)
except timeout:
m = None
if m and len(m[0]) > 0:
t = time.time()
print '%0.3f' % (t - start), m[1], len(m[0])
s.sendto(sine_packet, m[1])
start = t
m = audioop.alaw2lin(m[0][8:], 2)
for i in range(len(m) / 2):
sample = audioop.getsample(m, 2, i)
outfile.write('%6d\n' % sample)
if not stream_started:
stream.start()
stream.write(m)
outfile2.write(m)
