Splitting frequency-domain processing between multiple DSP cores
US11516582B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2021 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Feb 7, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2400/01
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An audio processing system may split frequency-domain processing between multiple DSP cores. Processing multi-channel audio data—e.g., from devices with multiple speakers—may require more computing power than available on a single DSP core. Such processing typically occurs in the frequency domain; DSP cores, however, typically communicate via ports configured for transferring data in the time-domain. Converting frequency-domain data into the time domain for transfer requires additional resources and introduces lag. Furthermore, transferring frequency-domain data may result in scheduling issues due to a mismatch between buffer size, bit rate, and the size of the frequency-domain data chunks transferred. However, the buffer size and bit rate may be artificially configured to transfer a chunk of frequency-domain data corresponding to a delay in the communication mechanism used by the DSP cores. In this manner, frequency-domain data can be transferred with a proper periodicity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.