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Jan Schmidt authored
Add a new boolean surround-delay property that makes audioecho just apply a delay to certain channels to create a surround effect, rather than an echo on all channels. This is useful when upmixing from stereo - for example. Add a surround-mask property to control which channels are considered surround sound channels when adding a delay with surround-delay = true Original patch from Jochen Henneberg <jh@henneberg-systemdesign.com>
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