Home/ Questions/Q 382929
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-12T15:14:00+00:00

I’m trying to write a simple tuner (no, not to make yet another tuner

  • 0

I’m trying to write a simple tuner (no, not to make yet another tuner app), and am looking at the AurioTouch sample source (has anyone tried to comment this code??).

My worry is that aurioTouch doesn’t seem to actually work very well when looking at the frequency domain graph. I play a single note on an instrument and I don’t see a nicely ordered, small, set of frequencies with one string peak at the appropriate frequency of the note.

Has anyone used aurioTouch enough to know whether the underlying code is functional or whether it is just a crude sample?

Other options I have are to use FFTW or KISS FFT. Anyone have any experience with those?

Thanks.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    FFTs use frequency bins and the bin frequency width is based on the FFT parameters. To find a frequency you will need to record it sampled at a rate at least twice the highest frequency present in the sample. Then find the time between the cycles. If it is not a pure frequency this will of course be harder.

    • 0