HydrogenAudio

Hydrogenaudio Forum => Scientific Discussion => Topic started by: mfcc64 on 2018-09-02 07:04:35

Title: Logarithmic frequency scale spectrogram
Post by: mfcc64 on 2018-09-02 07:04:35
Hi,
I wrote audio spectrum analyzer that has logarithmic frequency division with musical scales. The algorithm is similar to constant Q transform (CQT).
It is available as html5 page on ShowCQTBar Audio Spectrum Visualization (https://mfcc64.github.io/html5-showcqtbar/)

Summary of the algorithm:

Previously, it was available as ffmpeg/mpv 'showcqt' filter, here is the screenshot:
(https://raw.githubusercontent.com/mfcc64/mpv-scripts/master/screenshoots/showcqt.jpg)

Title: Re: Logarithmic frequency scale spectrogram
Post by: Case on 2018-09-02 11:13:02
The default settings on your page make for a very beautiful visualization. Your screenshot doesn't do it justice.
Title: Re: Logarithmic frequency scale spectrogram
Post by: mfcc64 on 2018-09-02 18:28:46
The image is from https://github.com/mfcc64/mpv-scripts (https://github.com/mfcc64/mpv-scripts)
It is similar to html5 version with waterfall enabled, but with different axis image.
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