| Patents for H04S 1 - Two-channel systems (4,182) |
|---|
| 05/24/2000 | EP0788723B1 Method and apparatus for efficient presentation of high-quality three-dimensional audio |
| 05/23/2000 | US6067361 Method and apparatus for two channels of sound having directional cues |
| 05/23/2000 | US6067360 Apparatus for localizing a sound image and a method for localizing the same |
| 05/23/2000 | CA2115610C Stereo voice transmission apparatus, echo canceler, and voice input/output apparatus to which this echo canceler is applied |
| 05/04/2000 | DE19952300A1 Audio processing unit, converts n-channel audio signals into 2-channel signals, sets different delay times for transfer functions for 2-channel signals, outputs to left/right headset speakers |
| 04/20/2000 | WO2000022876A1 Point source speaker system |
| 04/18/2000 | US6052470 System for processing audio surround signal |
| 04/13/2000 | WO2000021337A2 Integrated audio mixer with alternating quantization output |
| 04/13/2000 | CA2344890A1 Integrated audio mixer with alternating quantization output |
| 04/12/2000 | CN1250346A Audible signal processing circuit |
| 04/06/2000 | DE19844630A1 Cinema system has electromechanical transducers connected via cables to convert low frequency signals into mechanical oscillations and attached to seat so oscillations couple into seat |
| 04/05/2000 | EP0991298A2 Method for localization of an acoustic image out of man's head via a headphone |
| 04/05/2000 | EP0990369A2 Sound reproduction system |
| 04/05/2000 | EP0990368A1 Method and apparatus for frequency-domain downmixing with block-switch forcing for audio decoding functions |
| 04/05/2000 | CN1249891A Audio system comprising audio signal processing circuit |
| 03/30/2000 | WO2000018031A1 Method and device for developing a virtual speaker distant from the sound source |
| 03/30/2000 | CA2345336A1 Method and device for developing a virtual speaker distant from the sound source |
| 03/29/2000 | EP0988773A1 Loudspeaker array for enlarged sweet spot |
| 03/28/2000 | US6044307 Method of entering audio signal, method of transmitting audio signal, audio signal transmitting apparatus, and audio signal receiving and reproducing apparatus |
| 03/28/2000 | CA2042938C Stereo microphone unit |
| 03/21/2000 | US6041338 Interpolation filter system |
| 03/21/2000 | US6041225 Monitor control circuit using wireless headphones and method therefor |
| 03/16/2000 | WO2000015003A2 Low-frequency audio enhancement system |
| 03/08/2000 | EP0984667A2 Method and apparatus for efficient presentation of high-quality three-dimensional audio |
| 03/07/2000 | US6035045 Sound image localization method and apparatus, delay amount control apparatus, and sound image control apparatus with using delay amount control apparatus |
| 02/23/2000 | CN1049788C Two-acoustic channel three-dimension Hi-Fi processor |
| 02/17/2000 | WO2000008896A1 Device for sound simulation, and method for producing such a device |
| 02/15/2000 | US6026169 Sound image localization device |
| 02/10/2000 | WO2000006065A1 First draft-active noise reduction audiometry headphones |
| 02/08/2000 | US6023512 Three-dimensional acoustic processor which uses linear predictive coefficients |
| 02/03/2000 | WO2000005926A1 Audio signal controller and reproducing device comprising the same |
| 02/03/2000 | DE19936346A1 Audio signal processing system for editing and processing |
| 02/02/2000 | EP0977464A2 Audio signal processing circuit |
| 02/02/2000 | EP0977463A2 Processing method for localization of acoustic image for audio signals for the left and right ears |
| 02/02/2000 | EP0976306A1 Surround sound reproduction system, sound/visual reproduction system, surround signal processing unit and method for processing an input surround signal |
| 02/02/2000 | EP0976305A1 A method of processing an audio signal |
| 02/01/2000 | US6021205 Headphone device |
| 01/26/2000 | EP0975201A2 A method of processing a plural channel audio signal |
| 01/25/2000 | CA2098319C Signal processor for recreating original audio signals |
| 01/20/2000 | WO2000003562A1 Audio signal processor and audio device |
| 01/18/2000 | US6016473 Low bit-rate spatial coding method and system |
| 01/18/2000 | US6016295 Audio system which not only enables the application of the surround sytem standard to special playback uses but also easily maintains compatibility with a surround system |
| 01/12/2000 | EP0910928B1 Coding and decoding of audio signals by using intensity stereo and prediction processes |
| 01/12/2000 | EP0910927B1 Process for coding and decoding stereophonic spectral values |
| 01/05/2000 | EP0968624A2 Telephonic transmission of three dimensional sound |
| 01/05/2000 | CN1240565A Method and device for projecting sound sources onto loudspeakers |
| 01/04/2000 | US6011851 Spatial audio processing method and apparatus for context switching between telephony applications |
| 01/04/2000 | US6011526 Display apparatus operable in synchronism with a movement of the body of a viewer |
| 12/29/1999 | WO1999053612A8 User adjustable volume control that accommodates hearing |
| 12/29/1999 | EP0966865A2 Multidirectional audio decoding |
| 12/29/1999 | EP0966790A1 Apparatus and methods for the harmonic enhancement of electronic audio signals |
| 12/22/1999 | EP0966179A2 A method of synthesising an audio signal |
| 12/22/1999 | EP0965246A1 Stereo sound expander |
| 12/21/1999 | US6005947 Technique for enhancing stereo sound |
| 12/21/1999 | CA2203008C Method for measuring the conservation of stereophonic audio signals and method for identifying jointly coded stereophonic audio signals |
| 12/15/1999 | EP0963684A1 Method and corresponding system for influencing the stereo channel separation of an audiosignal |
| 12/14/1999 | US6002776 Directional acoustic signal processor and method therefor |
| 12/14/1999 | US6002774 Arrangement, a system, a circuit and a method for enhancing a stereo image |
| 12/07/1999 | US5999630 Sound image and sound field controlling device |
| 12/02/1999 | WO1999014735A3 Acoustic signal reproducing apparatus |
| 12/01/1999 | EP0961523A1 Music spatialisation system and method |
| 11/30/1999 | US5995631 Sound image localization apparatus, stereophonic sound image enhancement apparatus, and sound image control system |
| 11/25/1999 | WO1999033325A3 Surround signal processing apparatus and method |
| 11/24/1999 | EP0959558A1 Stereo/bi-channel demodulator |
| 11/24/1999 | EP0958710A1 Audio system comprising audio signal processing circuit |
| 11/24/1999 | CN1236153A Audio signal processing apparatus and audio signal reproducing apparatus |
| 11/23/1999 | US5988314 Sound output system |
| 11/18/1999 | DE19829284A1 Temporal stereo signal processing method for forming scaled bit stream |
| 11/18/1999 | DE19822100A1 Stereo-/Zweiton-Demodulator Stereo / two-demodulator |
| 11/17/1999 | EP0957660A2 Audio signal processing and reproducing |
| 11/17/1999 | CN1235505A Apparatus and method for localizing sound image |
| 11/16/1999 | US5987141 Stereo expander |
| 11/10/1999 | EP0955789A2 Method and device for synthesizing a virtual sound source |
| 11/10/1999 | CN1234718A Method for realizing surrounding sound and disc of surrounding sound thereof |
| 11/09/1999 | US5982903 Method for construction of transfer function table for virtual sound localization, memory with the transfer function table recorded therein, and acoustic signal editing scheme using the transfer function table |
| 11/09/1999 | US5982902 System for generating atmospheric quasi-sound for audio performance |
| 11/04/1999 | DE19910372A1 Individual outer ear tube audio transfer function measurement |
| 10/27/1999 | EP0689756B1 Plural-channel sound processing |
| 10/26/1999 | US5974383 Configuring an audio mixer in an audio interface |
| 10/26/1999 | US5974154 Effector with integral setting of control parameters and adaptive selecting of control programs |
| 10/26/1999 | US5974153 Method and system for sound expansion |
| 10/26/1999 | US5974152 Sound image localization control device |
| 10/26/1999 | US5973555 Power amplifier apparatus |
| 10/21/1999 | WO1999053721A1 Improved hearing enhancement system and method |
| 10/21/1999 | WO1999053612A1 User adjustable volume control that accommodates hearing |
| 10/21/1999 | CA2328353A1 User adjustable volume control that accommodates hearing |
| 10/14/1999 | WO1999052326A1 Low bit-rate spatial coding method and system |
| 10/13/1999 | EP0615387B1 Moving picture encoder |
| 10/13/1999 | CN2343731Y Family movie theatre surrounding stereo sound |
| 10/07/1999 | WO1999051063A1 Headtracked processing for headtracked playback of audio signals |
| 10/07/1999 | WO1999051061A1 Audio player |
| 10/06/1999 | CN1230867A Sound reproducing device, earphone device and signal processing device therefor |
| 09/30/1999 | WO1999049574A1 Audio signal processing method and apparatus |
| 09/29/1999 | CN1230331A Recording and play-back two-channel system for providing holophonic reproduction of sounds |
| 09/28/1999 | US5959597 Image/audio reproducing system |
| 09/23/1999 | DE19911507A1 Method of improving three-dimensional sound reproduction enables more effective 3D sound processing to be achieved with minimisation of high frequency components of a virtual sound source positioned behind the ear |
| 09/22/1999 | CN1229542A Acoustic heterodyne device and method |
| 09/14/1999 | US5951646 System and method for scheduling and processing image and sound data |
| 09/08/1999 | CN1228236A Encoding method and device, decoding method and device, and recording medium |
| 09/08/1999 | CN1228205A Apparatus and methods for harmonic enhancement of electronic audio signals |