Alternative volume-level algorithm

Submitted by McIntosh on Sun, 2016-10-09 11:49

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Hello

I use moc, with software mixer to control the volume (I'm not sure if that is relevant information or not).

I think that the effect of the volume control is too weak and an alternative volume-level algorithm would be good to have.
If I compare moc with audacious, audacious uses a (in my opinion) much better algorithm for controlling the volume. I'm no expert on the subject but I guess it could be a issue of linear scale versus logarithmic.

tomaszg

Sun, 2016-10-09 12:17

I've been doing some work in this area - namely I used alsamixer algorithm which allows for a logarithmic volume setting. If you want to play with it, you can grab it from my github fork: https://github.com/tomaszg7/mocp . It's in commit: https://github.com/tomaszg7/mocp/commit/169a0f322866639d618d6dc6f25d1bb29f28caea but I'm not sure if it would work with current SVN head on its own.

tomaszg

Sun, 2016-10-09 12:30

Just realized my thing works only for ALSA mixer. I'll try to copy it over to softmixer as well and let you know.

tomaszg

Sun, 2016-10-09 16:17

Pushed new commit https://github.com/tomaszg7/mocp/commit/6c1aa4bb32bcc5e692bc629d9a6367bd00c7e4f6 which makes softmixer behave non-linearly. Used the functions from http://www.dr-lex.be/info-stuff/volumecontrols.html

The code should work also with current MOC version, you can grab patch here http://tomaszg.pl/moc/softmixer.patch (don't worry about reported offsets).

McIntosh

Sun, 2019-09-22 06:51

Hello

Will the work done by tomaszg be included into MOC?
I think it would be a really nice improvement on the music player.

jcf

Sun, 2019-09-22 07:51

Significant work on the sound drivers is scheduled to happen in MOC version 2.7 (when we get there), so that's the time to be looking at it.