Python Audio Processing Basics - How to work with audio files in Python

Learn how to work with audio files in Python in this Python Audio Processing Tutorial. Learn about:

- mp3, wave, flac file
- sampling rate
- wave module Python
- plot waveform with matplotlib
- record microphone with Python
- PyAudio Tutorial
- PyDub Tutorial

Resources:

M1 PyAudio Installation command:
python -m pip install --global-option='build_ext' --global-option='-I/opt/homebrew/Cellar/portaudio/19.7.0/include' --global-option='-L/opt/homebrew/Cellar/portaudio/19.7.0/lib' pyaudio

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Timestamps:
00:00 Intro
00:27 signal parameters
03:18 wave module
10:44 plot waveform matplotlib
15:40 record microphone with PyAudio
21:50 load mp3 with PyDub

#Python #PyAudio

[InternetGeezer]

Thank you, this tutorial was so helpful!

[bryanfondrick]

Very nice video, but could you turn off the pop ups. Some times it is hard to see what you are typing.

[__________________________]

Which extension you are using to play the audio file in the vs code. comment the extension name.

[josales]

Hey, could you help me in my project? I'm trying to play audio from youtube videos. Using pytube I have the audio stream "<Stream: itag="139" mime_type="audio/mp4" abr="48kbps" acodec="mp4a.40.5" progressive="False" type="audio">" but I dont want to save in the computer, and then load in memory again. Do you know how to play this stream with pyaudio?

[ieatgarbage]

I’m kind of a noob. How is frames[0] of type int if frames is a bytes object? And why is the length still double if each element of frames is of type int?

[subhomandal]

That’s so nice to see the audio modules together.
But, what if I want to do the recording and getting it out through some STT-TTS module at the runtime, without need of saving the file?

[qten]

I'm getting a ValueError every time I try and use this with my audio, is there any chance i could get some help? The error code says "ValueError: x and y must have same first dimension, but have shapes (22043, ) and (44086, )", I know they need to be the same length but .reshape doesn't work and I have no idea what to do

[vjayanand]

Hi, I get an error stating OSError: [Errno -9981] Input overflowed. OSError Traceback (most recent call last)
Cell In[23], line 16
14 while True:
15 i += 1
---> 16 data = stream.read(CHUNK)
17 rms = audioop.rms(data, 2)

File ~/anaconda3/lib/python3.10/site-packages/pyaudio/__init__.py:570, in PyAudio.Stream.read(self, num_frames, exception_on_overflow)
567 if not self._is_input:
568 raise IOError("Not input stream",
569
--> 570 return pa.read_stream(self._stream, num_frames,
571 exception_on_overflow)

[sandymlgenai]

Given a flute music file, how can we convert the music to notes and decompress the file back to audio blocks using literally any method( trained spectograms, any ML algorithm..)

[mayankdwivedi]

How can the 'frames' object have bytes as its data type? It is a collection of Integers right? Shouldn't it be of type 'list'?

[dexnug]

hi..what is the meaning y-axis in the 15:31??what is the meaning of that number?

[andrewildschutz]

Coding is so confusing and not consistent.