saewoonam/audio

Simple python programs using pyaudio

Relevant programs

1. sa.py
   • Spectrum analyzer program for the microphone
   • Digitizes, filters, and computes FFT of signals from a microphone
   • Uses pyqtgraph instead of matplotlib, much faster, better interactoin with OS
   • Works on osx, windows, linux
   • Uses pyaudio callbacks to process signals as they are recorded by the microphone
   • Must set the audio device index in the code for your machine
2. chirp_pg.py
   • Does above
   • Plays chirps for the first 10 seconds, 1 per second
   • computes correlation with initial chirp, plots in 3rd graph

Requirements

• python3
• pyqtgraph
• pyaudio
• pyqt (not sure this will be included automatically by pyqtgraph)

Soundcard hangs

• On mac, the soundcard may get hung... This commands resets it sudo killall coreaudiod