How to detect microphone volume via PyAudio on Linux?

Question

linux

Need to detect sound volume (in decibels) in microphone using PyAudio

Answer 1

import pyaudio
import audioop
import math

CHUNK = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
RECORD_SECONDS = 1

p = pyaudio.PyAudio()
stream = p.open(format=FORMAT,
                channels=CHANNELS,
                rate=RATE,
                input=True,
                frames_per_buffer=CHUNK)

for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK, 
                       exception_on_overflow=False)
    rms = audioop.rms(data, 2)
    decibel = 20 * math.log10(rms)
    print(decibel)

stream.stop_stream()
stream.close()
p.terminate()