Audio processing circuit supporting multi-channel audio input function
US-11109172-B2 · Aug 31, 2021 · US
in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems
in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04S3/006 |
| Official title | {in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems} |
| Display label | in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems |
| Total patents | 87 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 10 |
| 2018 | 9 |
| 2019 | 11 |
| 2020 | 13 |
| 2021 | 6 |
| 2022 | 8 |
| 2023 | 5 |
| 2024 | 7 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and Methods of Adjusting Bass Levels of Multi-Channel Audio Signals
US-2021120362-A1 · Apr 22, 2021 · US
3d sound orientation adaptability
US-2021092543-A1 · Mar 25, 2021 · US
Systems and methods of adjusting bass levels of multi-channel audio signals
US-10880671-B2 · Dec 29, 2020 · US
Audio processing circuit supporting multi-channel audio input function
US-2020374643-A1 · Nov 26, 2020 · US
Encoded audio metadata-based equalization
US-2020342886-A1 · Oct 29, 2020 · US
Spatial audio apparatus
US-10818300-B2 · Oct 27, 2020 · US
Apparatus and method for realizing a saoc downmix of 3d audio content
US-2020304932-A1 · Sep 24, 2020 · US
Determining sound locations in multi-channel audio
US-10771913-B2 · Sep 8, 2020 · US
Imaging apparatus
US-10742946-B2 · Aug 11, 2020 · US
Adaptive audio construction
US-10728688-B2 · Jul 28, 2020 · US
Apparatus and method for realizing a SAOC downmix of 3D audio content
US-10701504-B2 · Jun 30, 2020 · US
Encoded audio metadata-based equalization
US-10699726-B2 · Jun 30, 2020 · US
Method, electronic device and recording medium for obtaining Hi-Res audio transfer information
US-10681486-B2 · Jun 9, 2020 · US
System, control method, and control terminal
US-10652658-B2 · May 12, 2020 · US
Systems and Methods of Adjusting Bass Levels of Multi-Channel Audio Signals
US-2020084567-A1 · Mar 12, 2020 · US
Determining sound locations in multi-channel audio
US-2019349704-A1 · Nov 14, 2019 · US
Systems and methods of adjusting bass levels of multi-channel audio signals
US-10462599-B2 · Oct 29, 2019 · US
Systems and Methods of Adjusting Bass Levels of Multi-Channel Audio Signals
US-2019297449-A1 · Sep 26, 2019 · US
Adaptive audio construction
US-2019281404-A1 · Sep 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04S3/006?
- CPC H04S3/006 is the Cooperative Patent Classification code for “in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems.”
- How many patents are filed under CPC H04S3/006 (in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems)?
- Our database includes 87 publications tagged with this CPC code.
- Is patent activity under CPC H04S3/006 growing?
- Publication counts under this code: 7 in 2024 vs 4 in 2025 (latest complete years).