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As you might figure SND is a full featured signal processing toolbox. Most standard techniques have been implemented and new ones can be programmed. As a starting point you might want to try copying “new-effects.scm” to your working or “ /zap ” directory and then load it in the scheme listener with the following steps:
and then on the SND listener,
Of course you are encouraged to try all of these effects but make sure you already have an opened sound. If you are not happy with the processing you can undo it by C-x C-u or simply “undo” in SND's edit menu. If you are really curious about signal processing you can also look at the code and customize these filters or create new ones. Make sure you share them with the DSP and SND communities.
The effects include:
Most of these are either simple calls on SND functions or use functions in the other scm files. If you are using two or more channels sound-files the actual processing follows the sync chain or the currently active channels but aside from reverb it is good practice to work with DSP effects on each channel separately.
N O T E: on PlanetCCRMA Linux machines outside CCRMA network, Snd sources are located on,
your sources will be at
where X is the Snd version. Instructions for compiling Snd are part of the documentation described at the links on: §9.13