def classify_audioframes(audioQueue, audio_frames, classifier, high_speed):
if (not audioQueue.empty()):
audio_frames.append(audioQueue.get())
# In case we are dealing with frames not being met and a buffer being built up,
# Start skipping every other audio frame to maintain being up to date,
# Trading being up to date over being 100% correct in sequence
if (audioQueue.qsize() > 1):
print("SKIP FRAME", audioQueue.qsize())
audioQueue.get()
if (len(audio_frames) >= 2):
audio_frames = audio_frames[-2:]
highestintensity = np.amax(
audioop.maxpp(audio_frames[1], 4) / 32767)
wavData = b''.join(audio_frames)
# SKIP FEATURE ENGINEERING COMPLETELY WHEN DEALING WITH SILENCE
if (high_speed == True
and highestintensity < SILENCE_INTENSITY_THRESHOLD):
probabilityDict, predicted, frequency = create_empty_probability_dict(
classifier, {}, 0, highestintensity, 0)
else:
power = fftData = np.frombuffer(wavData, dtype=np.int16)
power = get_recording_power(
fftData,
classifier.get_setting('RECORD_SECONDS', RECORD_SECONDS))
probabilityDict, predicted, frequency = predict_raw_data(
wavData, classifier, highestintensity, power)
return probabilityDict, predicted, audio_frames, highestintensity, frequency, wavData
return False, False, audio_frames, False, False, False
def segment_input_file(threshold, power_threshold, frequency_threshold, begin_threshold, WAVE_INPUT_FILE, WAVE_OUTPUT_FILENAME, WAVE_OUTPUT_FILE_EXTENSION):
audioFrames = []
wf = wave.open(WAVE_INPUT_FILE, 'rb')
number_channels = wf.getnchannels()
total_frames = wf.getnframes()
frame_rate = wf.getframerate()
frames_to_read = round( frame_rate * RECORD_SECONDS / SLIDING_WINDOW_AMOUNT )
files_recorded = 0
delay_threshold = 0
if( begin_threshold < 0 ):
delay_threshold = begin_threshold * -1
begin_threshold = 1000
audio = pyaudio.PyAudio()
record_wave_file_count = 0
index = 0
while( wf.tell() < total_frames ):
index = index + 1
raw_wav = wf.readframes(frames_to_read * number_channels)
# If our wav file is shorter than the amount of bytes ( assuming 16 bit ) times the frames, we discard it and assume we arriveed at the end of the file
if (len(raw_wav) != 2 * frames_to_read * number_channels ):
break;
else:
audioFrames.append(raw_wav)
if( len( audioFrames ) >= SLIDING_WINDOW_AMOUNT ):
audioFrames = audioFrames[-SLIDING_WINDOW_AMOUNT:]
intensity = [
audioop.maxpp( audioFrames[0], 4 ) / 32767,
audioop.maxpp( audioFrames[1], 4 ) / 32767
]
highestintensity = np.amax( intensity )
byteString = b''.join(audioFrames)
fftData = np.frombuffer( byteString, dtype=np.int16 )
frequency = get_loudest_freq( fftData, RECORD_SECONDS )
power = get_recording_power( fftData, RECORD_SECONDS )
print( "Segmenting file " + WAVE_INPUT_FILE + ": " + str( math.ceil(wf.tell() / total_frames * 100) ) + "%" , end="\r" )
if( frequency > frequency_threshold and highestintensity > threshold and power > power_threshold ):
record_wave_file_count += 1
if( record_wave_file_count <= begin_threshold and record_wave_file_count > delay_threshold ):
files_recorded += 1
waveFile = wave.open(WAVE_OUTPUT_FILENAME + str(index) + WAVE_OUTPUT_FILE_EXTENSION, 'wb')
waveFile.setnchannels(number_channels)
waveFile.setsampwidth(audio.get_sample_size(FORMAT))
waveFile.setframerate(frame_rate)
waveFile.writeframes(byteString)
waveFile.close()
else:
record_wave_file_count = 0
print( "Extracted " + str(files_recorded) + " segmented files from " + WAVE_INPUT_FILE )
wf.close()
def listen_loop(audio,
stream,
classifier,
dataDicts,
audio_frames,
high_speed=False):
audio_frames, intensity = get_stream_wav_segment(stream, [])
wavData = b''.join(audio_frames)
# SKIP FEATURE ENGINEERING COMPLETELY WHEN DEALING WITH SILENCE
if (high_speed == True and intensity < SILENCE_INTENSITY_THRESHOLD):
probabilityDict, predicted, frequency = create_probability_dict(
classifier, {}, 0, intensity, 0)
else:
fftData = np.frombuffer(byteString, dtype=np.int16)
power = get_recording_power(fftData, RECORD_SECONDS)
probabilityDict, predicted, frequency = predict_raw_data(
wavData, classifier, intensity, power)
return probabilityDict, predicted, audio_frames, intensity, frequency, wavData
def record_consumer(threshold, power_threshold, frequency_threshold,
begin_threshold, WAVE_OUTPUT_FILENAME,
WAVE_OUTPUT_FILE_EXTENSION, FULL_WAVE_OUTPUT_FILENAME,
audio, stream):
global recordQueue
files_recorded = 0
j = 0
record_wave_file_count = 0
audioFrames = []
# Set the proper thresholds for starting recordings
delay_threshold = 0
if (begin_threshold < 0):
delay_threshold = begin_threshold * -1
begin_threshold = 1000
totalAudioFrames = []
try:
with KeyPoller() as key_poller:
while (True):
if (not recordQueue.empty()):
audioFrames.append(recordQueue.get())
totalAudioFrames.append(audioFrames[-1])
if (len(audioFrames) >= SLIDING_WINDOW_AMOUNT):
j += 1
audioFrames = audioFrames[-SLIDING_WINDOW_AMOUNT:]
intensity = [
audioop.maxpp(audioFrames[0], 4) / 32767,
audioop.maxpp(audioFrames[1], 4) / 32767
]
highestintensity = np.amax(intensity)
byteString = b''.join(audioFrames)
fftData = np.frombuffer(byteString, dtype=np.int16)
frequency = get_loudest_freq(fftData, RECORD_SECONDS)
power = get_recording_power(fftData, RECORD_SECONDS)
fileid = "%0.2f" % ((j) * RECORD_SECONDS)
if (record_controls(key_poller, recordQueue) == False):
stream.stop_stream()
break
if (frequency > frequency_threshold
and highestintensity > threshold
and power > power_threshold):
record_wave_file_count += 1
if (record_wave_file_count <= begin_threshold and
record_wave_file_count > delay_threshold):
files_recorded += 1
print(
"Files recorded: %0d - Power: %0d - Freq: %0d - Saving %s"
%
(files_recorded, power, frequency, fileid))
waveFile = wave.open(
WAVE_OUTPUT_FILENAME + fileid +
WAVE_OUTPUT_FILE_EXTENSION, 'wb')
waveFile.setnchannels(CHANNELS)
waveFile.setsampwidth(
audio.get_sample_size(FORMAT))
waveFile.setframerate(RATE)
waveFile.writeframes(byteString)
waveFile.close()
else:
print(
"Files recorded: %0d - Power: %0d - Freq: %0d"
% (files_recorded, power, frequency))
else:
record_wave_file_count = 0
print(
"Files recorded: %0d - Power: %0d - Freq: %0d"
% (files_recorded, power, frequency))
# Persist the total wave only once every six frames
if (len(totalAudioFrames) % 6):
byteString = b''.join(totalAudioFrames)
waveFile = wave.open(FULL_WAVE_OUTPUT_FILENAME,
'wb')
waveFile.setnchannels(CHANNELS)
waveFile.setsampwidth(
audio.get_sample_size(FORMAT))
waveFile.setframerate(RATE)
waveFile.writeframes(byteString)
waveFile.close()
except Exception as e:
print("----------- ERROR DURING RECORDING -------------- ")
exc_type, exc_value, exc_tb = sys.exc_info()
traceback.print_exception(exc_type, exc_value, exc_tb)
stream.stop_stream()
