| Patents for H04S 5 - Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation (2,758) |
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| 02/27/2003 | US20030039365 Sound processing system with degraded signal optimization |
| 02/27/2003 | US20030038925 Visual and audio system for theaters |
| 02/13/2003 | US20030031333 System and method for optimization of three-dimensional audio |
| 02/13/2003 | US20030031332 Audio reproducing system |
| 02/12/2003 | EP1283658A2 Multi channel audio reproduction system |
| 02/11/2003 | US6519342 Method and apparatus for filtering an audio signal |
| 01/30/2003 | US20030023331 Portable terminal unit and sound reproducing system using at least one portable terminal unit |
| 01/23/2003 | WO2003007656A1 Efficient and scalable parametric stereo coding for low bitrate applications |
| 01/23/2003 | WO2002043437A3 Wave field synthesys sound reproduction system using a distributed mode panel |
| 01/23/2003 | US20030016830 Speaker system |
| 01/22/2003 | EP1278399A1 Receiver, method, program and signal for adapting the sound volume of a ring signal |
| 01/15/2003 | EP1275271A2 Multi-channel audio converter |
| 01/15/2003 | EP1275269A2 A method of audio signal processing for a loudspeaker located close to an ear |
| 01/15/2003 | CN2531597Y 多功能音响助理 Multifunction Audio Assistant |
| 01/15/2003 | CN1391782A Method for deriving at least three audio signals from two input audio signals |
| 01/15/2003 | CN1391781A Two methods and two devices for processing input audio stereo signal, and audio stereo signal reproduction system |
| 01/14/2003 | US6507657 Stereophonic sound image enhancement apparatus and stereophonic sound image enhancement method |
| 01/02/2003 | US20030002693 Audio signal processing |
| 01/02/2003 | US20030002683 Voice-to-remaining audio (VRA) interactive center channel downmix |
| 01/02/2003 | EP1272004A2 Audio signal processing |
| 12/27/2002 | WO2002104071A1 Acoustic reproducing unit |
| 12/19/2002 | WO2002007481A3 Multi-channel stereo converter for deriving a stereo surround and/or audio centre signal |
| 12/18/2002 | EP1267591A2 Sound signal playback machine and method thereof |
| 12/18/2002 | EP1266541A2 System and method for optimization of three-dimensional audio |
| 12/18/2002 | EP1266469A1 Use of voice-to-remaining audio (vra) in consumer applications |
| 12/17/2002 | US6496584 Multi-channel stereo converter for deriving a stereo surround and/or audio center signal |
| 12/12/2002 | WO2002100128A1 Center channel enhancement of virtual sound images |
| 12/12/2002 | US20020186854 Sound signal playback machine and method thereof |
| 12/05/2002 | WO2002098172A2 Method of generating a left modified and a right modified audio signal for a stereo system |
| 12/05/2002 | US20020181718 Audio apparatus |
| 12/05/2002 | US20020181717 Data-driven software architecture for digital sound processing and equalization |
| 12/04/2002 | EP1263263A2 Audio apparatus |
| 11/27/2002 | EP1260119A1 Multi-channel sound reproduction system for stereophonic signals |
| 11/27/2002 | EP0965229B1 Recording medium sharing objects having a plurality of contents, playback apparatus, playback method and recording method |
| 11/21/2002 | WO2002093773A1 Parametric virtual speaker and surround-sound system |
| 11/21/2002 | US20020172370 Surround sound field reproduction system and surround sound field reproduction method |
| 11/21/2002 | CA2446645A1 Parametric virtual speaker and surround-sound system |
| 11/20/2002 | EP1259097A2 Surround sound field reproduction system and surround sound field reproduction method |
| 11/14/2002 | WO2002091798A2 Data-driven software architecture for digital sound processing and equalization |
| 11/06/2002 | EP1254588A2 A remote control apparatus and a receiver and an audio system |
| 10/31/2002 | WO2002052896A3 Multi-channel audio converter |
| 10/31/2002 | US20020159605 Automatic sound field correcting device |
| 10/31/2002 | US20020159602 Automatic sound field correcting device |
| 10/30/2002 | EP1253806A2 Automatic sound field correcting device |
| 10/30/2002 | EP1253805A2 Automatic sound field correcting device |
| 10/30/2002 | CN1377210A Artificial stereo circuit and loudspeaker device |
| 10/23/2002 | CN1376013A Audio-frequency circular sound power management switchover |
| 10/22/2002 | US6470087 Device for reproducing multi-channel audio by using two speakers and method therefor |
| 10/15/2002 | US6466913 Method of determining a sound localization filter and a sound localization control system incorporating the filter |
| 10/03/2002 | WO2002078395A2 Method of reproducing multichannel sound using real and virtual speakers |
| 09/26/2002 | US20020136413 Artificial stereophonic circuit and artificial stereophonic device |
| 09/19/2002 | US20020131611 `Audio surround sound power management switching |
| 09/18/2002 | EP1241922A2 Audio surround sound power management switching |
| 09/18/2002 | EP1240805A2 Method and arrangement for recording and playing back sounds |
| 09/11/2002 | EP1238570A2 System for generating sounds |
| 09/11/2002 | CN1369189A Voice-to-remaining audio (VRA) intercutive center channel downmix |
| 09/10/2002 | US6449368 Multidirectional audio decoding |
| 09/06/2002 | WO2002069670A1 Headphone-use stereophonic device and voice signal processing program |
| 08/29/2002 | US20020118840 Multi-channel audio converter |
| 08/28/2002 | EP1234484A1 Method for deriving at least three audio signals from two input audio signals |
| 08/27/2002 | US6442278 Voice-to-remaining audio (VRA) interactive center channel downmix |
| 08/27/2002 | US6442277 Method and apparatus for loudspeaker presentation for positional 3D sound |
| 08/22/2002 | WO2001095669A3 A remote control apparatus and a receiver and an audio system |
| 08/21/2002 | EP1232672A1 A method of processing and reproducing an audio stereo signal, and an audio stereo signal reproduction system |
| 08/21/2002 | EP1232671A1 Two methods and two devices for processing an input audio stereo signal, and an audio stereo signal reproduction system |
| 08/21/2002 | CN1365246A Four channel artificial signal outputting system and method by two channel sound effect hardware |
| 08/20/2002 | US6438237 3D woofer drive circuit |
| 08/15/2002 | WO2002063925A2 Audio channel translation |
| 08/14/2002 | EP0965247B1 Multi-channel audio enhancement system for use in recording and playback and methods for providing same |
| 08/06/2002 | US6430535 Method and device for projecting sound sources onto loudspeakers |
| 08/06/2002 | US6430293 Recording and play-back two-channel system for providing a holophonic reproduction of sounds |
| 07/31/2002 | EP1226740A2 System and method for providing interactive audio in a multi-channel audio environment |
| 07/11/2002 | WO2002019766A3 System for generating sounds |
| 07/04/2002 | WO2002052896A2 Multi-channel audio converter |
| 06/26/2002 | EP1217871A2 Acoustic apparatus |
| 06/20/2002 | WO2002049211A2 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 06/20/2002 | US20020076067 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 06/20/2002 | US20020076066 Acoustic apparatus |
| 06/13/2002 | WO2002005588A3 Power amplification for parametric loudspeakers |
| 06/12/2002 | EP1212923A2 Method and apparatus for generating a second audio signal from a first audio signal |
| 06/06/2002 | WO2001078486A3 A method of audio signal processing for a loudspeaker located close to an ear |
| 06/04/2002 | US6401028 Position guiding method and system using sound changes |
| 05/30/2002 | WO2002043437A2 Wave field synthesys sound reproduction system using a distributed mode panel |
| 05/30/2002 | CA2429841A1 Wave field synthesys sound reproduction system using a distributed mode panel |
| 05/29/2002 | EP1209949A1 Wave Field Synthesys Sound reproduction system using a Distributed Mode Panel |
| 05/22/2002 | EP1206896A1 Audio speaker system for personal computer |
| 05/10/2002 | WO2002037896A1 Portable multi-channel amplifier |
| 05/07/2002 | US6385320 Surround signal processing apparatus and method |
| 05/02/2002 | US20020052685 Position guiding method and system using sound changes |
| 04/30/2002 | US6381335 Audio speaker system for personal computer |
| 04/30/2002 | US6381333 Sound processing circuit |
| 04/25/2002 | US20020049735 Sound retrieval apparatus, and sound data recording apparatus |
| 04/25/2002 | US20020048381 Multichannel acoustic signal reproducing apparatus |
| 04/18/2002 | WO2002032186A2 Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio |
| 03/28/2002 | WO2002026000A2 A method of synthesising an approximate impulse response function |
| 03/28/2002 | US20020038158 Signal processing apparatus |
| 03/28/2002 | US20020037086 Multi-channel stereo converter for deriving a stereo surround and/or audio centre signal |
| 03/27/2002 | EP1190598A1 Voice-to-remaining audio (vra) interactive center channel downmix |
| 03/14/2002 | US20020031232 Stereo audio processing device for deriving auxiliary audio signals, such as direction sensing and centre signals |
| 03/13/2002 | CN1339938A Reproducing device for multiple sound channel signals |