问题描述
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。
解决方法
有几个问题。
第一个是 scipi.io.wavefile.write()
只写入未压缩的 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不错的静音文件,我用声音编辑程序 Audacity 对其进行了验证,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()