#Python Friday #290: Record Audio With #PyAudio

https://pythonfriday.dev/2025/08/290-record-audio-with-pyaudio/

Today's minor software victory involves arm-wrestling with the portaudio wrapper for Python.

The hotplug branch (referenced in https://github.com/PortAudio/portaudio/wiki/HotPlug) of the C level portaudio code seems to be a dead-end, so that's a bumner.

Experimentally I observed that calling terminate() twice on the PyAudio() object gets me a fresh list without restarting the program (a TUI) even though, as far as I can tell, I only call open() once. Some ref-count bug?

I'll take the win 🔊

#Python #PyAudio #PortAudio

#pyaudio and #numpy for audio #fft
https://github.com/aiXander/Realtime_PyAudio_FFT

Writing your own #audio analyzer using pyaudio-analysis https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0144610
(possibly in combination with #pyaudio)
#python #audioanalysis

Both PyAudio and SoundDevice are Python libraries for audio input and output. What makes them different?

PyAudio provides direct bindings to the PortAudio library, giving you more control over audio parameters and access to lower-level functionality.

SoundDevice offers a simpler, more Pythonic interface that works seamlessly with NumPy arrays, making it convenient for processing audio data. SoundDevice is also actively maintained.

#python #pyaudio #sounddevice #NumPy

I spent a few hours on New Years Eve trying to listen to my USB microphone using Python3, PyQt5 and pyAudio. I can play WAV files using pyAudio, but fetching my microphone is becoming a bit challenging.

Lets see if I can get this working New Years Day. Time to read the documentation.
https://people.csail.mit.edu/hubert/pyaudio/docs/

#Linux #python #python3 #pyqt #pyqt5 #pyaudio #portaudio #USB #USB3 #microphone #WAV

I have created this discussion at the #py5 forum... To collect #PyAudio or other audio examples, If anyone else wants to post other experiments...

https://github.com/py5coding/py5generator/discussions/282

wink wink @kantel @TomLarrow @ericof @rzeta0
#Python #CreativeCoding

Tomorrow or maybe during the week I should read this tutorial mixing #Python #PyAudio and #PySimpleGUI ... https://k3no.medium.com/integrating-pyaudio-pysimplegui-5fa342b1e113

As usual, I have no idea of what I'm doing 😂​ #Python #Processing #py5 + #PyAudio microphone listening

Tone generation with #Python turns out to be relatively simple. I found this short code on a blog https://raw.githubusercontent.com/makermovement/3.5-Sensor2Phone/master/generate_any_audio.py [edit: the variable Fs might need to be changed to sampling_rate in the non-sine waves]

which can be tweaked fairly intuitively (er, for me, someone who has been playing music for over 20 years): change "samples" number for different length files, add more for loops for different sequences, use different functions for different waveforms.

Since the waveforms are generated by values in lists being packed into byte sequences, I imagine someone could use spike data (maybe transformed a bit to be in range [-128, 127]) instead of something that generates a sinewave or whatever.

My original idea was to have the spikes trigger a wav file to be played, to make a spiking drum machine, which seems possible with #pygame, #pyaudio, or a module called playsound, but I realized it would require stitching them together and also generating silence, so I went for the simpler method that's more like a synthesizer