Recursive multistage audio processing

Details Recursive multistage audio processing Recursive multistage audio processing

2006-09-19

2006-09-19

Knepper, David D. (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

C704S503000

Reexamination Certificate

active

07110940

ABSTRACT:
Efficient recursive audio processing of one or more input data streams using a multistage processor for performing one or more predetermined functions and programmable audio effects. A first stage performs a first predetermined function, such as frequency shifting function. Intermediate results are preferably mixed. The second stage applies programmable audio effects to the mixed data, such as a reverberation effect, and stores the second stage output in a destination mix bin. The second stage output is preferably transferred to a main memory accessible to a primary processor. The second stage output is directed back to the first stage of the multistage processor to perform a second predetermined function, such as three dimensional spatialization. The primary processor modifies parameters of the first predetermined function to efficiently perform dynamic operations, such as Doppler shifts and volume transitions between multiple sound sources and a mixture of those sounds as a single point source.

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