tempi-fft

KO | EN

gitlite — search

#python #hacktoberfest #llm #go #rust #deep-learning #docker #java #nodejs #windows #awesome #kubernetes #pytorch #ios

(★ 256)

Real-time audio input and FFT written entirely in Swift for iOS.

tempi-fft Latest Version Download

Download Latest Version (.zip)

// repository documentation

Was this content helpful?

★ 0 (0 ratings)

# TempiFFT

## Description

TempiFFT demonstrates how to input audio via AVFoundation for recording or processing and implements an FFT to display a real-time spectrum plot of incoming audio.

What's an FFT? Short for Fast Fourier Transform, it's a method for deconstructing an audio signal (or any time-based signal for that matter) into its constituent frequencies and intensities. The FFT function is a crucial component for nearly all audio DSP.

Doesn't Apple's Accelerate framework already include an FFT? Yes, and this project makes use of it. But Accelerate's FFT function (```vDSP_fft_zrip```) isn't trivial to call or set up correctly (esp. from Swift) and is just one necessary ingredient to a functional FFT.

What's “logical banding”? Actually I made that term up so maybe there's a better name for it, but logical banding adds an interface on top of the raw FFT data so that you can, for example, analyze the data at 5 bands per octave across a 6 octave range.

How do you pronounce Tempi? TEMP-ee.

## Technologies

- Swift
- iOS
- AVFoundation
- DSP (Fast Fourier Transform)
- CoreGraphics

## License

[![CC0](https://licensebuttons.net/p/zero/1.0/88x31.png)](http://creativecommons.org/publicdomain/zero/1.0/)

To the extent possible under law, John Scalo has waived all copyright and related or neighboring rights to this work.

## Contact

Contact me on Twitter - [@scalo](https://twitter.com/intent/user?screen_name=scalo)

tempi-fft

tempi-fft Latest Version Download

Today's picks

Was this content helpful?

Recent Feedback

tempi-fft

tempi-fft Latest Version Download

Today's picks

Was this content helpful?

Recent Feedback

Download README