Recursive multistage audio processing
US7110940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2002 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | May 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2250/121
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.