I'm trying to work with Audio on Python 3.7 on Mac(Catalina) only with the built-in Microphone and Speakers. My Problem is that with any code I tried, when recording I receive nothing and when playing sound nothing comes out. I tried the answers from this question: first I tried with PyAudio like this:
import pyaudio
import wave
CHUNK = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = "output.wav"
p = pyaudio.PyAudio()
stream = p.open(format=FORMAT,
channels=CHANNELS,
rate=RATE,
input=True,
frames_per_buffer=CHUNK)
print("* recording")
frames = []
for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
data = stream.read(CHUNK)
frames.append(data)
print("* done recording")
stream.stop_stream()
stream.close()
p.terminate()
wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(b''.join(frames))
wf.close()
Which returns me a silent file.
Then I tried with SoundDevice:
import sounddevice as sd
import matplotlib.pyplot as plt
fs = 44100 # frames per sec
sd.default.samplerate = fs
sd.default.channels = 2
duration = 3.0 # Aufnahmezeit
recording = sd.rec( int( duration * fs) )
print("* recording")
sd.wait()
print("* done!")
t = [ i for i in range( int( duration * fs) )]
plt.plot(t, recording, 'r-')
plt.show()
Wich returns an array filled with zeros: Screenshot of the Plot. Both didn't cause any errors or warnings.
After that I tried to play a simple Sin-Wave with 440 Hz, the speaker stayed silent.
The same code, works on my friends mac without problems. The Microphone & Speakers are also working fine. And in System Preferences I allowed every app to use the microphone.
This person seems to have a similar issue. Also tried this code without result. :(
I have no idea what else I could try to fix this.
