Title:
ORCHESTRATION OF ACOUSTIC DIRECT SEQUENCE SPREAD SPECTRUM SIGNALS FOR ESTIMATION OF ACOUSTIC SCENE METRICS
Document Type and Number:
WIPO Patent Application WO/2022/120006
Kind Code:
A3
Abstract:
Some methods may involve receiving a first content stream that includes first audio signals, rendering the first audio signals to produce first audio playback signals, generating first direct sequence spread spectrum (DSSS) signals, generating first modified audio playback signals by inserting the first DSSS signals into the first audio playback signals, and causing a loudspeaker system to play back the first modified audio playback signals, to generate first audio device playback sound. The method(s) may involve receiving microphone signals corresponding to at least the first audio device playback sound and to second through Nth audio device playback sound corresponding to second through Nth modified audio playback signals (including second through Nth DSSS signals) played back by second through Nth audio devices, extracting second through Nth DSSS signals from the microphone signals and estimating at least one acoustic scene metric based, at least partly, on the second through Nth DSSS signals.
Inventors:
SOUTHWELL BENJAMIN JOHN (US)
GUNAWAN DAVID (US)
THOMAS MARK R P (US)
HINES CHRISTOPHER GRAHAM (US)
GUNAWAN DAVID (US)
THOMAS MARK R P (US)
HINES CHRISTOPHER GRAHAM (US)
Application Number:
PCT/US2021/061534
Publication Date:
July 07, 2022
Filing Date:
December 02, 2021
Export Citation:
Assignee:
DOLBY LABORATORIES LICENSING CORP (US)
International Classes:
H04S7/00
Domestic Patent References:
| WO2021127286A1 | 2021-06-24 |
Foreign References:
| US20200234719A1 | 2020-07-23 | |||
| CN112866863A | 2021-05-28 | |||
| US6301287B1 | 2001-10-09 |
Attorney, Agent or Firm:
ANDERSEN, Robert L. et al. (US)
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