H04R 2227/003
Digital pa systems using
Official title: Digital PA systems using, e.g. LAN or internet
H04R2227/003 (Digital pa systems using) appears on 1,326 US grants and 1,524 published applications in this corpus.
Search patents in H04R- Granted patents
- 1,326
- Published applications
- 1,524
- Assignees
- 348
- Inventors
- 1,627
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 3 |
| 2004 | 1 | 4 |
| 2005 | 1 | 13 |
| 2006 | 2 | 12 |
| 2007 | 0 | 16 |
| 2008 | 3 | 13 |
| 2009 | 4 | 13 |
| 2010 | 15 | 16 |
| 2011 | 9 | 13 |
| 2012 | 22 | 35 |
| 2013 | 27 | 61 |
| 2014 | 16 | 58 |
| 2015 | 64 | 77 |
| 2016 | 84 | 122 |
| 2017 | 126 | 136 |
| 2018 | 143 | 131 |
| 2019 | 156 | 159 |
| 2020 | 143 | 116 |
| 2021 | 115 | 98 |
| 2022 | 87 | 99 |
| 2023 | 103 | 93 |
| 2024 | 74 | 95 |
| 2025 | 93 | 91 |
| 2026 | 33 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Arbitration-based voice recognition29 Sep 2026US 12,749,486 B2Sonos, Inc.
- Portable speaker with audio monitor and output network link29 Sep 2026US 12,750,624 B2Bose Corporation
- Playback device pairing22 Sep 2026US 12,745,041 B2Sonos, Inc.
- Playback transitions22 Sep 2026US 12,745,052 B2Sonos, Inc.
- Playback device calibration based on representative spectral characteristics15 Sep 2026US 12,737,152 B2Sonos, Inc.
- Device designation of playback and network microphone device arrangements17 Sep 2026US 2026/0281620 A1Sonos, Inc.
- Playback Transfer in a Media Playback System10 Sep 2026US 2026/0267593 A1Sonos, Inc.
- Sound reproduction method, sound reproduction device, and non-transitory computer readable recording medium storing sound reproduction program13 Aug 2026US 2026/0236220 A1Panasonic Intellectual Property Management Co., Ltd.
- Sound reproduction method, sound reproduction device, and non-transitory computer readable recording medium storing sound reproduction program13 Aug 2026US 2026/0238921 A1Panasonic Intellectual Property Management Co., Ltd.
- Bidirectional communication method, program, and wearable device6 Aug 2026US 2026/0230193 A1Daikin Industries, Ltd.
Most cited
By later US patents
- System and method for synchronizing operations among a plurality of independently clocked digital data processing devices1,949US 8,234,395 B2Sonos, Inc. · 2012
- Audio network distribution system1,807US 7,643,894 B2Netstreams, LLC · 2010
- Wired, wireless, infrared, and powerline audio entertainment systems1,762US 8,103,009 B2KSC Industries, Inc. · 2012
- System and method for calibration of an acoustic system1,614US 7,630,501 B2Microsoft Corporation · 2009
- Intelligent speaker unit for speaker system network731US 5,406,634 APeak Audio, Inc. · 1995