Question

我想计算此代码的单通道数据（以便计算通道1和通道4之间的音频互相关）：

import time
import numpy as np
import pyaudio
import scipy
from scipy import signal, fftpack

pyaud = pyaudio.PyAudio()


#open the stream

stream = pyaud.open(
    format = pyaudio.paInt16,
    channels = 4,
    rate = 16000,
    input_device_index = 4,
    output = False,
    input = True,
    frames_per_buffer=2048,)


while True:

    rawsamps = stream.read(2048)        
    samps = np.fromstring(rawsamps, dtype=np.int16)
    frames_per_buffer_length = len(samps) / 4 #(channels)   
    assert frames_per_buffer_length == int(frames_per_buffer_length)    
    samps = np.reshape(samps, (frames_per_buffer_length, 4)) #4 channels

假设原始数据是交错的这是我需要使用的功能：

    signal.correlate(n1, n2, mode='full')

如何为每个通道创建数据数组以使用关联功能？代码的最后几行是否正确？

谢谢

Answer 1

我使用print loudness(samps[:,0]), loudness(samps[:,3])找到了答案。它打印在外壳“mic 1响度，麦克风4响度”

PyAudio - 多通道管理\解密

1 个答案: