Re: How to check whether audio bytes contain empty noise or actual voice/signal?

On 2024-10-25 17:25, marc nicole via Python-list wrote:

Hello Python fellows,
 I hope this question is not very far from the main topic of this list, but
I have a hard time finding a way to check whether audio data samples are
containing empty noise or actual significant voice/noise.
 I am using PyAudio to collect the sound through my PC mic as follows:
 FRAMES_PER_BUFFER = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 48000
RECORD_SECONDS = 2import pyaudio
audio = pyaudio.PyAudio()
stream = audio.open(format=FORMAT,
                 channels=CHANNELS,
                 rate=RATE,
                 input=True,
                 frames_per_buffer=FRAMES_PER_BUFFER,
                 input_device_index=2)
data = stream.read(FRAMES_PER_BUFFER)
  I want to know whether or not data contains voice signals or empty sound,
To note that the variable always contains bytes (empty or sound) if I print
it.
 Is there an straightforward "easy way" to check whether data is filled with
empty noise or that somebody has made noise/spoke?
 Thanks.

If you do a spectral analysis and find peaks at certain frequencies, then there might be a "significant" sound.