def testcross(data):
if verbose:
print 'cross'
if audioop.cross(data[0], 1) != 0 or \
audioop.cross(data[1], 2) != 0 or \
audioop.cross(data[2], 4) != 0:
return 0
return 1
def testcross(data):
if verbose:
print 'cross'
if audioop.cross(data[0], 1) <> 0 or \
audioop.cross(data[1], 2) <> 0 or \
audioop.cross(data[2], 4) <> 0:
return 0
return 1
def cross(self):
"""Return the number of zero crossings in frames.
:returns: number of zero crossing
"""
return audioop.cross(self._frames, self._sampwidth)
def cross(self):
""" Return the number of zero crossings in frames.
:returns: number of zero crossing
"""
return audioop.cross(self._frames, self._sampwidth)
def cross(self):
"""
Return the number of zero crossings in frames.
@return number of zero crossing
"""
return audioop.cross(self.frames, self.sampwidth)
def get_cross(self):
"""
Return the number of zero crossings.
@return number of zero crossing
"""
return audioop.cross( self.frames )
def test_cross(self):
for w in 1, 2, 3, 4:
self.assertEqual(audioop.cross(b'', w), -1)
self.assertEqual(audioop.cross(bytearray(), w), -1)
self.assertEqual(audioop.cross(memoryview(b''), w), -1)
p = packs[w]
self.assertEqual(audioop.cross(p(0, 1, 2), w), 0)
self.assertEqual(audioop.cross(p(1, 2, -3, -4), w), 1)
self.assertEqual(audioop.cross(p(-1, -2, 3, 4), w), 1)
self.assertEqual(audioop.cross(p(0, minvalues[w]), w), 1)
self.assertEqual(audioop.cross(p(minvalues[w], maxvalues[w]), w), 1)
def test_cross(self):
for w in 1, 2, 3, 4:
self.assertEqual(audioop.cross(b"", w), -1)
self.assertEqual(audioop.cross(bytearray(), w), -1)
self.assertEqual(audioop.cross(memoryview(b""), w), -1)
p = packs[w]
self.assertEqual(audioop.cross(p(0, 1, 2), w), 0)
self.assertEqual(audioop.cross(p(1, 2, -3, -4), w), 1)
self.assertEqual(audioop.cross(p(-1, -2, 3, 4), w), 1)
self.assertEqual(audioop.cross(p(0, minvalues[w]), w), 1)
self.assertEqual(audioop.cross(p(minvalues[w], maxvalues[w]), w), 1)
def cross(fragment, sampwidth):
"""
Return the number of zero crossings in the fragment passed as an argument.
@param fragment (string) input frames.
@param sampwidth (int) sample width of the frames.
@return number of zero crossing
"""
return audioop.cross(fragment, sampwidth)
def speech_recognize(str_data):
global recording, record_file, access_token
if audioop.cross(str_data, SAM_WID) > CROSS_NUM:
if not recording:
recording = True
record_file = '' #start a new record
record_file = record_file + str_data
#store audio data in record_file
else:
if recording:
record_file = record_file + str_data
#upload recorf file to cloud server and get result
call_cloud(record_file)
recording = False
def speech_recognize(str_data):
global recording, record_file, access_token
if audioop.cross(str_data, SAM_WID) > CROSS_NUM:
if not recording:
recording = True
record_file = '' #start a new record
record_file = record_file + str_data
#store audio data in record_file
else:
if recording:
record_file = record_file + str_data
#upload recorf file to cloud server and get result
call_cloud(record_file)
recording = False
def test_cross(self):
for w in 1, 2, 4:
self.assertEqual(audioop.cross(b'', w), -1)
p = packs[w]
self.assertEqual(audioop.cross(p(0, 1, 2), w), 0)
self.assertEqual(audioop.cross(p(1, 2, -3, -4), w), 1)
self.assertEqual(audioop.cross(p(-1, -2, 3, 4), w), 1)
self.assertEqual(audioop.cross(p(0, minvalues[w]), w), 1)
self.assertEqual(audioop.cross(p(minvalues[w], maxvalues[w]), w), 1)
def speech_recognize(str_data):
global recording, record_file
if audioop.cross(str_data, SAM_WID) > CROSS_NUM:
if not recording:
recording = True
record_file = wave.open(TEMP_REC_FILE, 'wb')
record_file.setnchannels(CH_NUM)
record_file.setsampwidth(SAM_WID)
record_file.setframerate(SAM_RAT)
record_file.writeframes(str_data)
#store audio data in record_file
else:
if recording:
record_file.writeframes(str_data)
record_file.close()
recording = False
#upload record file to cloud server and get result
call_cloud()
def test_cross(self):
self.assertEqual(audioop.cross(data[0], 1), 0)
self.assertEqual(audioop.cross(data[1], 2), 0)
self.assertEqual(audioop.cross(data[2], 4), 0)
def test_cross(self):
self.assertEqual(audioop.cross(data[0], 1), 0)
self.assertEqual(audioop.cross(data[1], 2), 0)
self.assertEqual(audioop.cross(data[2], 4), 0)
def testcross(data): if audioop.cross(data[0], 1) <> 0 or \ audioop.cross(data[1], 2) <> 0 or \ audioop.cross(data[2], 4) <> 0: return 0 return 1
def handle_audio(self, buf=None, frame_count=None, time_info=None, status=None, realtime=True):
if not self.mic and realtime: buf = self.wf.readframes(frame_count)
if not buf: return
self.ichunk += 1
meanRMS = 1.0*sum(self.deque_mean)/max(len(self.deque_mean),1)
meanFreq = 1.0*sum(self.deque_freq)/max(len(self.deque_freq),1)
mean_rms = audioop.rms(buf,self.sampwidth)
mean_freq = 0.5*audioop.cross(buf,self.sampwidth) * self.RATE / self.CHUNK
fourier = np.fft.fft(self.framesToNumpy(buf))
magnitudes = np.abs(fourier[self.freqs_indices])
low_indices = ((50.0 < self.freqs) & (self.freqs < 500.0)).astype(bool)
mid_indices = ((500.0 < self.freqs) & (self.freqs < 2000.0)).astype(bool)
high_indices = (2000.0 < self.freqs).astype(bool)
low_freqs = self.freqs[low_indices]
low_mags = magnitudes[low_indices]
low_weighted = np.dot(low_freqs, low_mags)/np.sum(low_mags)
low_mag_sum = np.sum(low_mags)
mid_freqs = self.freqs[mid_indices]
mid_mags = magnitudes[mid_indices]
mid_weighted = np.dot(mid_freqs, mid_mags)/np.sum(mid_mags)
mid_mag_sum = np.sum(mid_mags)
high_freqs = self.freqs[high_indices]
high_mags = magnitudes[high_indices]
high_weighted = np.dot(high_freqs, high_mags)/np.sum(high_mags)
high_mag_sum = np.sum(high_mags)
mag_sum = low_mag_sum + mid_mag_sum + high_mag_sum
# print "%4.0f %4.0f %4.0f %4.0f %4.0f %4.0f" % (low_weighted, mid_weighted, high_weighted, \
# np.sum(low_mags), np.sum(mid_mags), np.sum(high_mags))
fact = max(0.1,min(1.0,meanRMS / 5000.0))
rgb = [fact*100.0*low_mag_sum/mag_sum, fact*100.0*mid_mag_sum/mag_sum, fact*100.0*high_mag_sum/mag_sum]
rgb = rgb[::-1]
try:
pass
if RPI and realtime:
self.led.switch_color_rgb(rgb[0], rgb[1], rgb[2])
except: pass
# print peak_frequencies
# now want to find frequencies ordered by magnitudes
# try:
# plt.cla()
# except: pass
# try:
# # plt.plot(self.freqs, magnitudes)
# print time.time()-self.t0, meanFreq
# plt.scatter(time.time()-self.t0, meanFreq)
# plt.show()
# except:
# pass
self.deque_mean.append(mean_rms)
self.deque_freq.append(mean_freq)
self.deque_time.append(time.time())
if realtime:
hue = max(0.11, min(0.9,1.0*(meanFreq-500)/1500))
lum = max(0.05, min(1.0,1.0*(meanRMS-1500)/8000))
# self.led.switch_color(hue, lum)
meas_chunk_time = max((self.deque_time[-1] - self.deque_time[0]) / max(len(self.deque_time)-1,1), 0.001)
pred_chunk_time = 1.0*self.CHUNK/self.RATE
perfpct = 100.0*pred_chunk_time/meas_chunk_time # < 100%, we're computing slowly, >100% we're time-traveling (good?). ~100% we're good
t = int(1.0 * self.ichunk * self.CHUNK / self.RATE)
line = self.draw_bar( meanRMS, 0,500, 30, extra="[%3.0f%% speed] [%4is] [%5.1f Hz] [%1.2f %1.2f]" % (perfpct, t, meanFreq, hue,lum) )
sys.stdout.write("\r"+ " "*100) # clear the whole line
sys.stdout.write("\r" + line + " ")
sys.stdout.flush()
return (buf, pyaudio.paContinue)
from pylab import *
sample_rate = 44100
inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE, alsaaudio.PCM_NONBLOCK)
inp.setchannels(1)
inp.setrate(sample_rate)
inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
inp.setperiodsize(1600)
DATA = []
for x in xrange(10000):
l, data = inp.read()
DATA.append(data)
cross = audioop.cross(data, 2)
print cross, ' ',
if cross > 0:
print (44100.0/5.0)/cross
print
time.sleep(5.0/sample_rate)
for i in DATA:
inp.write(data)
print len(DATA)
#plot(DATA)
#show()
bucket = s3.Bucket(input_bucket)
# Downloading an audio file from s3 to local system
bucket.download_file('****{wave file URL ob s3}****.wav',
r'../path_for_local_system/recording.wav')
with open(r'../../decibel_values.csv', 'a') as f:
f.write('recording_name', 'sample_width', 'n_frames', 'avg', 'rms',
'avgpp', 'zero_crossings', 'maxpp', 'min_max')
f.write(
str(a, wav.getsampwidth(), wav.getnframes(),
audioop.avg(string_wav, wav.getsampwidth()),
audioop.rms(string_wav, wav.getsampwidth()),
audioop.avgpp(string_wav, wav.getsampwidth()),
audioop.cross(string_wav, wav.getsampwidth()),
audioop.maxpp(string_wav, wav.getsampwidth()),
audioop.minmax(string_wav, wav.getsampwidth())))
wav = wave.open(r'../../recordings.wav')
string_wav = wav.readframes(wav.getnframes())
print('getsampwidth', wav.getsampwidth())
print('get n frmaes', wav.getnframes())
print('avg: ', audioop.avg(string_wav, wav.getsampwidth()))
print('rms: ', audioop.rms(string_wav, wav.getsampwidth()))
print('avgpp: ', audioop.avgpp(string_wav, wav.getsampwidth()))
print('zero_crossings: ', audioop.cross(string_wav, wav.getsampwidth()))
print('maxpp: ', audioop.maxpp(string_wav, wav.getsampwidth()))
print('max min: ', audioop.minmax(string_wav, wav.getsampwidth()))
