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swh / ladspa

The SWH Plugins package for the LADSPA plugin system
http://plugin.org.uk/
GNU General Public License v2.0
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Loudness contour correction plug in #45

Closed Neo595 closed 7 years ago

Neo595 commented 7 years ago

Hi Steve,

I'm thinking to talk to you as you're very experimented on audio plugin and also after extensive search, I can't find any reference to "loudness" correction (physiological) (as standard radio, amplifier).

So my question : Is somebody implement a loudness correction as a plugin that I can use in pulseaudio ?

https://en.wikipedia.org/wiki/Equal-loudness_contour

So, I don't know how to implement it and it seems rather hard. The aim is to design frequency dependent correction and also depending on SPL pressure to compensate loss of sensitivity of human ear at low SPL.

swh commented 7 years ago

I don't know of one exactly like that, but A-weighting is close, and there's a plugin for that: http://users.skynet.be/solaris/linuxaudio/