Abstract: A reverberation processing system simulates a sound scene that includes a plurality of related reverberant environments. The system includes a corresponding plurality of reverberation blocks that are fed by at least one source block. The reverberation blocks may include panning functionality to generate a perceived directional emphasis of the reverberation fields that are simulated by the reverberation blocks. The reverberation blocks may also include an auxiliary output that is used to feed related reverberation blocks, to simulate reverberation coupling between the reverberant environments.

Abstract: Briefly, a method and apparatus for mixing a plurality of channels of digital audio samples using a non-linear clipping function which has a variable scaling factor is disclosed. The non-linear curving function is capable of being graphically represented by a curve which is sloped at the edges before reaching the maximum values. In a first embodiment, the non-linear clipping function is applied to the samples and values are calculated in real-time. Preferably, inputs to the non-linear clipping function are modified depending upon any significant trends, e.g. increasing or decreasing, in the sums of samples over time. In a second embodiment, to reduce processor overhead, prior to real time application of the non-linear clipping function, the calculations are performed and a lookup table is generated. This lookup table is then used during real time to apply the clipping function to the input data so that the non-linear function is not recalculated whenever multiple channels are mixed.