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Code: Alles auswählen

import pyaudio
import numpy as np

maxValue = 2**16
bars = 35
p=pyaudio.PyAudio()


stream=p.open(format=pyaudio.paInt16,channels=1,rate=44100,
              input=True, frames_per_buffer=1024)


while True:
    data = np.fromstring(stream.read(1024),dtype=np.int16)
    dataL = data[0::2]
    dataR = data[1::2]
    peakL = np.abs(np.max(dataL)-np.min(dataL))/maxValue
    peakR = np.abs(np.max(dataR)-np.min(dataR))/maxValue
    lString = "#"*int(peakL*bars)+"-"*int(bars-peakL*bars)
    rString = "#"*int(peakR*bars)+"-"*int(bars-peakR*bars)
    print("L=[%s]\tR=[%s]"%(lString, rString))

Code: Alles auswählen

#!/usr/bin/env python3
from contextlib import closing

import numpy as np
import pyaudio

MAX_VALUE = 2 ** 16
BAR_LENGTH = 35
FRAME_COUNT = 1024


def create_bar(samples):
    peak_value = abs(np.max(samples) - np.min(samples)) / MAX_VALUE
    return ("#" * int(peak_value * BAR_LENGTH)).ljust(BAR_LENGTH, "-")


def main():
    with closing(
        pyaudio.PyAudio().open(
            rate=44_100, channels=1, format=pyaudio.paInt16, input=True
        )
    ) as stream:
        while True:
            samples = np.fromstring(stream.read(FRAME_COUNT), dtype=np.int16)
            print(
                f"L=[{create_bar(samples[0::2])}]"
                f"\tR=[{create_bar(samples[1::2])}]"
            )


if __name__ == "__main__":
    main()