H04R 25/505
Using digital signal processing
Official title: {using digital signal processing}
H04R25/505 (Using digital signal processing) appears on 2,040 US grants and 2,325 published applications in this corpus.
Search patents in H04R- Granted patents
- 2,040
- Published applications
- 2,325
- Assignees
- 454
- Inventors
- 2,580
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 11 | 0 |
| 1996 | 8 | 0 |
| 1997 | 19 | 0 |
| 1998 | 21 | 0 |
| 1999 | 13 | 0 |
| 2000 | 23 | 0 |
| 2001 | 22 | 5 |
| 2002 | 14 | 28 |
| 2003 | 16 | 36 |
| 2004 | 28 | 34 |
| 2005 | 22 | 43 |
| 2006 | 23 | 30 |
| 2007 | 33 | 38 |
| 2008 | 22 | 35 |
| 2009 | 23 | 30 |
| 2010 | 26 | 45 |
| 2011 | 25 | 35 |
| 2012 | 39 | 33 |
| 2013 | 39 | 43 |
| 2014 | 49 | 54 |
| 2015 | 58 | 59 |
| 2016 | 60 | 115 |
| 2017 | 86 | 131 |
| 2018 | 94 | 127 |
| 2019 | 131 | 144 |
| 2020 | 151 | 133 |
| 2021 | 127 | 210 |
| 2022 | 156 | 195 |
| 2023 | 180 | 197 |
| 2024 | 165 | 193 |
| 2025 | 175 | 181 |
| 2026 | 122 | 151 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ear-worn device with neural network-based noise modification and/or spatial focusing29 Sep 2026US 12,750,623 B2Fortell Research Inc.
- Hearing device with foveated bearforming and related method22 Sep 2026US 12,745,047 B2GN Hearing A/S
- Method of processing an audio signal in a hearing device22 Sep 2026US 12,745,049 B2Sonova AG
- Magnified binaural cues in a binaural hearing system15 Sep 2026US 12,739,573 B2Cochlear Limited
- Operating a hearing device for classifying an audio signal to account for user safety15 Sep 2026US 12,739,575 B2Sonova AG
- Audio processing using hearing loss data8 Oct 2026US 2026/0313300 A1Dolby International AB
- Hearing aid with adaptive level steering8 Oct 2026US 2026/0313301 A1Oticon A/S
- Method, apparatus and system for neural network hearing aid8 Oct 2026US 2026/0313302 A1Fortell Research Inc.
- Hearing aid comprising one or more sub-band filters8 Oct 2026US 2026/0313303 A1Oticon A/S
- Method for training a neural network8 Oct 2026US 2026/0313304 A1Oticon A/S
Most cited
By later US patents
- Wireless open ear canal earpiece473US 6,021,207 AResound Corporation · 2000
- Voltage/current control system for a human tissue stimulator384US 5,522,865 AAlfred E. Mann Foundation for Scientific Research · 1996
- Wired open ear canal earpiece384US 6,181,801 B2Resound Corporation · 2001
- Electronic translator for assisting communications339US 6,377,925 B1Interactive Solutions Corp. · 2002
- Adaptive, programmable signal processing and filtering for hearing aids325US 5,027,410 AWisconsin Alumni Research Foundation · 1991