I am trying to generate some audio and save it to a file as FLAC. I am misunderstanding several aspects, and the result is an "IndexError: tuple index out of range" error in the last line here:
I would be grateful for tips on how to get past the error, or even about better approaches.
If uncommented, the stream.write() produces sound on the speakers. So I know there is a stream to write. I am just not finding the way to get the stream into stand alone FLAC file on the disk. Or Ogg would also be good. MP3 would be acceptable to, though.
Code:
#!/usr/local/venv/bin/python3import numpyimport pyaudioimport soundfile as sfduration = 0.15 # base in seconds amplitude = 0.40 # range [0.0, 1.0] sampleRate = 44100 # integer sample rate, Hz frequency = 440.0 # float sine frequency, Hz # generate sine sample, with float32 array conversionsample = (numpy.sin( numpy.arange(sampleRate * duration * 3) * frequency / sampleRate \ * numpy.pi * 2)).astype(numpy.float32)data = (amplitude * sample).tobytes() \ + (0 * sample).tobytes() \ + (amplitude * sample).tobytes()audio = pyaudio.PyAudio()stream = audio.open(format=pyaudio.paFloat32, channels=2, rate=sampleRate, output=True)# stream.write(data) sf.write('audio.flac', data, sampleRate)If uncommented, the stream.write() produces sound on the speakers. So I know there is a stream to write. I am just not finding the way to get the stream into stand alone FLAC file on the disk. Or Ogg would also be good. MP3 would be acceptable to, though.
Statistics: Posted by tpyo kingg — Thu Jan 18, 2024 2:49 pm