| 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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| 12/23/2009 | EP1711030B1 Speaker apparatus |
| 12/16/2009 | EP2036400B1 Generation of decorrelated signals |
| 12/16/2009 | CN100571450C System and method for providing interactive audio in a multi-channel audio environment |
| 12/15/2009 | CA2325482C Audio signal processing method and apparatus |
| 12/10/2009 | WO2009128078A4 Nonlinear filter for separation of center sounds in stereophonic audio |
| 12/09/2009 | EP1522209B1 A stereo signal processing apparatus |
| 12/09/2009 | EP0923848B1 Multichannel active matrix sound reproduction with maximum lateral separation |
| 12/09/2009 | CN100569008C System and method for vehicle audio surround modes |
| 11/26/2009 | WO2009120814A3 Virtual round-table videoconference |
| 11/25/2009 | EP2124486A1 Angle-dependent operating device or method for generating a pseudo-stereophonic audio signal |
| 11/25/2009 | EP2124485A2 Advanced processing based on a complex-exponential-modulated filterbank and adaptive time signalling methods |
| 11/25/2009 | CN100563380C Acoustic apparatus and acoustic setting method |
| 11/19/2009 | WO2009138205A1 Angle-dependent operating device or method for obtaining a pseudo-stereophonic audio signal |
| 11/12/2009 | US20090281643 Audio processing device, audio processing method, and program |
| 11/11/2009 | CN101577618A Transmission apparatus and method |
| 10/29/2009 | WO2009131658A2 An electrical system for a speaker and its control |
| 10/22/2009 | WO2009128666A2 Method and apparatus for processing audio signals |
| 10/22/2009 | WO2009128663A2 A method and an apparatus for processing an audio signal |
| 10/22/2009 | WO2009128662A2 A method and an apparatus for processing an audio signal |
| 10/22/2009 | WO2009128078A1 Nonlinear filter for separation of center sounds in stereophonic audio |
| 10/21/2009 | EP2111041A1 Audio processing device, audio processing method, and program |
| 10/21/2009 | CN101562689A Audio processing device, audio processing method, and program |
| 10/21/2009 | CN100553373C Video-audio recording apparatus and method, and video-audio reproducing apparatus and method |
| 10/15/2009 | WO2009125466A1 Content reproduction system and content reproduction method |
| 10/14/2009 | CN201328191Y Multi-track sound-source switching box and multi-track acoustic system |
| 09/30/2009 | EP1769491B1 Audio channel conversion |
| 09/24/2009 | WO2009117434A1 Realistic audio communications in a three dimensional computer-generated virtual environment |
| 09/23/2009 | EP2015292B1 Efficient and scalable parametric stereo coding for low bitrate audio coding applications |
| 09/23/2009 | CN101543098A Generation of decorrelated signals |
| 09/17/2009 | WO2009113333A1 Signal processing device and signal processing method |
| 09/17/2009 | WO2009113319A1 Chair with built-in speaker |
| 09/17/2009 | WO2009113147A1 Signal processing device and signal processing method |
| 09/17/2009 | WO2009112980A1 Sound system and method of operation therefor |
| 09/16/2009 | EP2101517A1 Audio processor for converting a mono signal to a stereo signal |
| 09/16/2009 | CN100542337C Sound field reproduction apparatus and sound field space reproduction system |
| 09/09/2009 | EP1685743A4 Audio signal processing system and method |
| 09/09/2009 | CN101529930A Sound image positioning device, sound image positioning system, sound image positioning method, program, and integrated circuit |
| 09/09/2009 | CN100539742C Encoding and decoding method and apparatus for multitrack audio signal |
| 09/09/2009 | CN100539739C Method and device for reproducing a binaural output signal generated from a monaural input signal |
| 09/02/2009 | CN101521843A Head-related transfer function convolution method and head-related transfer function convolution device |
| 09/01/2009 | US7583806 Convertible automobile sound system equalizing |
| 09/01/2009 | US7583805 Late reverberation-based synthesis of auditory scenes |
| 08/26/2009 | EP2092791A1 A method and encoder for combining digital data sets, a decoding method and decoder for such combined digital data sets and a record carrier for storing such combined digital data set |
| 08/26/2009 | EP1547439B1 Bass management systems |
| 08/26/2009 | EP0976305B1 A method of processing an audio signal |
| 08/26/2009 | CN101518102A Dialogue enhancement techniques |
| 08/26/2009 | CN101517637A Encoding and decoding of audio objects |
| 08/26/2009 | CN101516055A Method and device capable of simulating three-dimensional echo sound effect in different acoustic environments |
| 08/26/2009 | CN100534223C Acoustics system of multiple loudspeakers and automatic control method |
| 08/20/2009 | US20090208023 Audio channel spatial translation |
| 08/05/2009 | EP2036399A4 Adaptive acoustic echo cancellation |
| 08/05/2009 | CN100525509C Automatic wind noise reduction circuit and method thereof |
| 07/30/2009 | US20090190766 Multi-channel audio enhancement system for use in recording playback and methods for providing same |
| 07/28/2009 | US7567676 Sound event detection and localization system using power analysis |
| 07/22/2009 | CN100518385C Sound image control system |
| 07/16/2009 | WO2009086627A1 Audio system with bonded-peripheral driven mixing and effects |
| 07/15/2009 | EP2079175A2 Digital mixer and digital mixing method |
| 07/15/2009 | EP1547436B1 Generation of a sound signal |
| 07/09/2009 | WO2009084916A1 A method and an apparatus for processing an audio signal |
| 07/09/2009 | WO2009084914A1 A method and an apparatus for processing an audio signal |
| 07/09/2009 | WO2009083868A1 A display device and control method |
| 07/09/2009 | CA2710562A1 A method and an apparatus for processing an audio signal |
| 06/17/2009 | EP2070391A2 Dialogue enhancement techniques |
| 06/17/2009 | EP0951800B1 Six-axis surround sound processor with automatic balancing and calibration |
| 06/17/2009 | CN101461257A Adaptive acoustic echo cancellation |
| 06/10/2009 | EP1504549A4 Discrete surround audio system for home and automotive listening |
| 06/10/2009 | CN100499356C Dynamic allocation of power supplied by a power supply and frequency agility spectral filtering of signals |
| 06/04/2009 | WO2009069228A1 Center channel positioning device |
| 06/03/2009 | EP2065885A1 Multichannel audio decoding |
| 06/03/2009 | EP2064699A1 Method and apparatus for extracting and changing the reverberant content of an input signal |
| 06/03/2009 | CN100496149C Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio |
| 05/26/2009 | US7539551 Portable terminal unit and sound reproducing system using at least one portable terminal unit |
| 05/26/2009 | US7539319 Utilization of filtering effects in stereo headphone devices to enhance spatialization of source around a listener |
| 05/20/2009 | CN100489991C Digital audio-frequency data reproducing device and integrated circuit device |
| 05/19/2009 | US7536021 Utilization of filtering effects in stereo headphone devices to enhance spatialization of source around a listener |
| 05/06/2009 | CA2642993A1 Simulated surround sound hearing aid fitting system |
| 04/29/2009 | CN101421779A Apparatus and method for production of a surrounding-area signal |
| 04/29/2009 | CN100484259C 紧凑的环绕声系统 Compact surround sound system |
| 04/23/2009 | WO2009050848A1 Multi-channel signal reproducing apparatus |
| 04/23/2009 | WO2009049773A1 Device and method for generating a multi-channel signal using voice signal processing |
| 04/22/2009 | EP1938655A4 Spatial audio simulation |
| 04/22/2009 | CN100481722C System and method for enhancing delivered sound in acoustical virtual reality |
| 04/21/2009 | US7522733 Systems and methods of spatial image enhancement of a sound source |
| 04/16/2009 | DE102007048973A1 Vorrichtung und Verfahren zum Erzeugen eines Multikanalsignals mit einer Sprachsignalverarbeitung Apparatus and method for generating a multi-channel signal having a speech signal processing |
| 04/15/2009 | CN101411214A Method and arrangement for a decoder for multi-channel surround sound |
| 04/09/2009 | WO2009044347A1 A method for headphone reproduction, a headphone reproduction system, a computer program product |
| 04/09/2009 | WO2008049587A8 Apparatus and method for generating an ambient signal from an audio signal, apparatus and method for deriving a multi-channel audio signal from an audio signal and computer program |
| 04/08/2009 | EP1971978A4 Controlling the decoding of binaural audio signals |
| 04/02/2009 | WO2009039897A1 Apparatus and method for extracting an ambient signal in an apparatus and method for obtaining weighting coefficients for extracting an ambient signal and computer program |
| 04/01/2009 | EP1955576A4 Method and apparatus to reproduce expanded sound using mono speaker |
| 04/01/2009 | CN101401456A Rendering center channel audio |
| 04/01/2009 | CN101400417A Game sound output device, game sound control method, information recording medium, and program |
| 03/31/2009 | US7512246 Stereo sounding method, stereo sounding system, and musical tone generation control system |
| 03/25/2009 | CN101395660A Audio decoding techniques for mid-side stereo |
| 03/18/2009 | EP2036400A1 Generation of decorrelated signals |
| 03/18/2009 | EP2036399A1 Adaptive acoustic echo cancellation |
| 03/18/2009 | CN101390443A Audio encoding and decoding |
| 03/11/2009 | CN101384106A Electronic device |
| 03/05/2009 | US20090060248 Earphone structure with a composite sound field |
| 03/05/2009 | US20090060238 Earphone structure with a composite sound field |