python - 如何从麦克风的其他样本中检索音高和响度？

Question

这是现有的代码，我已经有了。虽然它只从麦克风中检索一个响度和音高值

import aubio
import numpy as num
import pyaudio
import sys
import requests

BUFFER_SIZE             = 2048
CHANNELS                = 1
FORMAT                  = pyaudio.paFloat32
METHOD                  = "default"
SAMPLE_RATE             = 44100
HOP_SIZE                = BUFFER_SIZE//2
PERIOD_SIZE_IN_FRAME    = HOP_SIZE

def main(args):

    # Initiating PyAudio object.
    pA = pyaudio.PyAudio()
    # Open the microphone stream.
    mic = pA.open(format=FORMAT, channels=CHANNELS,
        rate=SAMPLE_RATE, input=True,
        frames_per_buffer=PERIOD_SIZE_IN_FRAME)

    # Initiating Aubio's pitch detection object.
    pDetection = aubio.pitch(METHOD, BUFFER_SIZE,
        HOP_SIZE, SAMPLE_RATE)
    # Set unit.
    pDetection.set_unit("Hz")
    # Frequency under -40 dB will considered
    # as a silence.
    pDetection.set_silence(-40)

    # Infinite loop!
    while True:

        # mic listening
        data = mic.read(PERIOD_SIZE_IN_FRAME)
        # Convert into number that Aubio understand.
        samples = num.fromstring(data,
            dtype=aubio.float_type)
        # Finally get the pitch.
        pitch = pDetection(samples)[0]
        # Compute the energy (volume)
        # of the current frame.
        volume = num.sum(samples**2)/len(samples)
        # format output
        # display 6 decimal digits like 0.000000.
        volume = "{:6f}".format(volume)

        # print loudness value and pitch value
        print(str(pitch/300) + " " + str(volume))
    url = "http://192.168.43.89:8000"
    requests.post(url, "[" + str(pitch/300) + "," + str(volume) + "]")
if __name__ == "__main__": main(sys.argv)

目标：获取脚本以检索麦克风的多个样本，例如 16 个样本。

我的伪代码看起来像

    pitch1 = pDetection(samples)[0]
    pitch2 = pDetection(samples)[1]
    pitch3 = pDetection(samples)[2]
    pitch4 = pDetection(samples)[3]

   volume1 = num.sum(samples[0]**2)/len(samples[0])
   volume2 = num.sum(samples[1]**2)/len(samples[1])
   volume3 = num.sum(samples[2]**2)/len(samples[2])
   volume4 = num.sum(samples[3]**2)/len(samples[3])

我认为如果我打印了所有值，输出将是：

0.00000
0.00000
0.00000
0.00000

0.00000
0.00000
0.00000
0.00000

这些值已设为零，就好像麦克风静音且未使用