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audioop — Manipulate raw audio data — Python 3.10.2 ...
https://docs.python.org/3/library/audioop.html
def echocancel (outputdata, inputdata): pos = audioop. findmax (outputdata, 800) # one tenth second out_test = outputdata [pos * 2:] in_test = inputdata [pos * 2:] ipos, factor = audioop. findfit (in_test, out_test) # Optional (for better cancellation): # factor = audioop.findfactor(in_test[ipos*2:ipos*2+len(out_test)], # out_test) prefill = ' \0 ' * (pos + ipos) * …
cpython/audioop.c at main · python/cpython · GitHub
https://github.com/python/cpython/blob/main/Modules/audioop.c
audioop_check_parameters (PyObject *module, Py_ssize_t len, int size) {if (! audioop_check_size (module, size)) return 0; if (len % size != 0) {PyErr_SetString (get_audioop_state (module)-> AudioopError, " not a whole number of frames "); return 0;} return 1;} /* [clinic input] module audioop [clinic start generated code] */
Python audioop Module - ProgramCreek.com
https://www.programcreek.com/python/index/771/audioop
Python audioop Module. This page shows the popular functions and classes defined in the audioop module. The items are ordered by their popularity in 40,000 open source Python projects. If you can not find a good example below, you can try the search function to search modules. 1. rms() Used in 30 projects 2.
Python Examples of audioop.rms - ProgramCreek.com
https://www.programcreek.com/python/example/100712/audioop.rms
assert self.pause_threshold >= self.non_speaking_duration >= 0 seconds_per_buffer = (source.CHUNK + 0.0) / source.SAMPLE_RATE elapsed_time = 0 # adjust energy threshold until a phrase starts while True: elapsed_time += seconds_per_buffer if elapsed_time > duration: break buffer = source.stream.read(source.CHUNK) energy = audioop.rms(buffer, …
21.1. audioop — Manipulate raw audio data — Python 2.7.6 ...
https://pydoc-zh.readthedocs.io/en/latest/library/audioop.html
The audioop module contains some useful operations on sound fragments. It operates on sound fragments consisting of signed integer samples 8, 16 or 32 bits wide, stored in Python strings. This is the same format as used by the al and sunaudiodev modules. All scalar items are integers, unless specified otherwise.
Python Examples of audioop.ratecv - ProgramCreek.com
https://www.programcreek.com/python/example/100705/audioop.ratecv
Python audioop.ratecv () Examples The following are 30 code examples for showing how to use audioop.ratecv () . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.
Python rms Examples, audioop.rms Python Examples - HotExamples
https://python.hotexamples.com/examples/audioop/-/rms/python-rms-function-examples.html
with open(sphfile) as s: bytes = s.read() s1_bytes1 = audioop.tomono(bytes,2,leftch,rightch) s2_bytes1 = audioop.tomono(bytes,2,rightch,leftch) s1_bytes = s1_bytes1[1024:] s2_bytes = s2_bytes1[1024:] e1 = audioop.rms(s1_bytes,2)*1.0 # make float by multiplying by 1.0 e2 = audioop.rms(s2_bytes,2)*1.0 print e1,e2 vol = math.exp(-1.0*float(SIR)/10)*e1/e2 return vol
Python getsample Examples, audioop.getsample Python ...
https://python.hotexamples.com/examples/audioop/-/getsample/python-getsample-function-examples.html
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 …
python - audioop.rms() - why does it differ from normal ...
https://stackoverflow.com/questions/9763471/audioop-rms-why-does-it-differ-from-normal-rms
I am writing a python function to return the loudness of a .wav file. RMS seems to be best the metric for this, Detect and record a sound with python. audioop.rms() does the trick, but I'd like to avoid audioop as a dependency, and I already import numpy. but I'm not getting the same RMS values, and would appreciate help in understanding what is going on.
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