Double talk detectors
US-12267463-B2 · Apr 1, 2025 · US
using double talk detection
using double talk detection · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04B3/234 |
| Official title | {using double talk detection} |
| Display label | using double talk detection |
| Total patents | 44 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 12 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 4 |
| 2021 | 2 |
| 2023 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Echo residual suppression
US-12231603-B2 · Feb 18, 2025 · US
Double talk detectors
US-2023171346-A1 · Jun 1, 2023 · US
Echo residual suppression
US-2023138637-A1 · May 4, 2023 · US
Double talk detection using capture up-sampling
US-2023115316-A1 · Apr 13, 2023 · US
Aggregating hardware loopback
US-11563857-B2 · Jan 24, 2023 · US
Estimating averaged noise component in a microphone signal
US-10999418-B2 · May 4, 2021 · US
Echo cancellation to alleviate timing varying channels
US-10985800-B2 · Apr 20, 2021 · US
Aggregating hardware loopback
US-2020382648-A1 · Dec 3, 2020 · US
Echo cancellation to alleviate timing varying channels
US-2020186192-A1 · Jun 11, 2020 · US
Methods for detecting double-talk
US-10622009-B1 · Apr 14, 2020 · US
Echo cancellation to alleviate timing varying channels
US-10567036-B2 · Feb 18, 2020 · US
Echo cancellation for a communication device
US-10523808-B2 · Dec 31, 2019 · US
Echo cancellation to alleviate timing varying channels
US-2019386701-A1 · Dec 19, 2019 · US
Echo canceller device and voice telecommunications device
US-10498389-B2 · Dec 3, 2019 · US
Estimating Averaged Noise Component in a Microphone Signal
US-2019327352-A1 · Oct 24, 2019 · US
Signal processing method, signal processing device, and signal processing program
US-10453471-B2 · Oct 22, 2019 · US
Carrier frequency offset estimation device and carrier frequency offset estimation method
US-2019273532-A1 · Sep 5, 2019 · US
Methods for detecting double talk
US-10388298-B1 · Aug 20, 2019 · US
Controlling operational characteristics of acoustic echo canceller
US-10389861-B2 · Aug 20, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04B3/234?
- CPC H04B3/234 is the Cooperative Patent Classification code for “using double talk detection.”
- How many patents are filed under CPC H04B3/234 (using double talk detection)?
- Our database includes 44 publications tagged with this CPC code.
- Is patent activity under CPC H04B3/234 growing?
- Publication counts under this code: 4 in 2023 vs 2 in 2025 (latest complete years).