发生异常：错误 mpg123_seek：RVA 模式无效。 （代码 12）

Question

我正在使用 sounddevice 录制音频，我想通过 pygame 通过虚拟音频线播放它，我一直收到此错误 Exception has occurred: error mpg123_seek: Invalid RVA mode. (code 12)

我的代码如下：

import sounddevice as sd
from scipy.io.wavfile import write
import random
import pygame
import time

pygame.init()
pygame.mixer.init(devicename='CABLE Input (VB-Audio Virtual Cable)')

fs = 44100  # Sample rate
seconds = 00.1  # Duration of recording


def main():
    for x in range(10000):
        number = random.randint(1,9999999)


        myrecording = sd.rec(int(seconds * fs), samplerate=fs, channels=2)
        sd.wait()  # Wait until recording is finished
        write(f'output/output{str(number)}.mp3', fs, myrecording)  # Save as WAV file `

        # PLAY MIC SOUND HERE
        pygame.mixer.music.load(f'output/output{str(number)}.mp3') #Load the mp3  
        pygame.mixer.music.play() #Play it
        time.sleep(00.1)

main()

感谢任何帮助。

Answer 1

有几个问题。

第一个是scipi.io.wavefile.write()只写一个未压缩的WAV文件（参考：https://docs.scipy.org/doc/scipy/reference/generated/scipy.io.wavfile.write.html）。您可以将其命名为 .mp3，但它不是这样压缩的。

下一个问题是pygame.mixer.music 不会.load() 未压缩的WAV 文件。所以……怎么办……

一种解决方法是使用基础pygame.mixer，它很乐意加载未压缩的WAV。虽然我没有“CABLE Input（VB-Audio Virtual Cable）”设备，但我确实得到了一个很好的静音文件，我用声音编辑程序 Audacity 验证了它，这似乎可以正常播放。

import sounddevice as sd
from scipy.io.wavfile import write
import pygame
import time
import random

pygame.init()
pygame.mixer.init(devicename='CABLE Input (VB-Audio Virtual Cable)')

fs = 44100  # Sample rate
seconds = 00.1  # Duration of recording


def main():
    for x in range(10000):
        number = random.randint(1,9999999)

        myrecording = sd.rec(int(seconds * fs), samplerate=fs, channels=2)
        sd.wait()  # Wait until recording is finished

        filename = f'output/output{str(number)}.wav'
        write(filename, fs, myrecording)  # Save as uncompressed WAV file 

        # PLAY MIC SOUND HERE
        print( "Playing ["  + filename + "]" )

        #pygame.mixer.music.load(filename) #Load the wav
        #pygame.mixer.music.play() #Play it
        #while ( pygame.mixer.music.get_busy() ):  # wait for the sound to end
        #    time.sleep(00.1)

        sound = pygame.mixer.Sound(filename) #Load the wav
        sound.play() #Play it
        while ( pygame.mixer.get_busy() ):  # wait for the sound to end
            time.sleep(00.1)

main()