| Patents for H03G 7 - Volume compression or expansion in amplifiers (2,243) |
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| 09/19/2006 | US7110559 System and method for controlling audio output |
| 09/19/2006 | US7110555 Sound signal reproducing apparatus |
| 09/12/2006 | US7107109 Process for adjusting the sound volume of a digital sound recording |
| 09/12/2006 | US7106138 Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics |
| 09/06/2006 | EP1699259A1 Audio output apparatus |
| 08/24/2006 | WO2005078921A8 Radio frequency low noise amplifier with automatic gain control |
| 08/17/2006 | US20060183449 Gain variable voltage/current conversion circuit and filter circuit using the same |
| 08/15/2006 | US7092461 Polyphase receivers |
| 08/15/2006 | US7091714 Gain and phase detector having dual logarithmic amplifiers |
| 08/09/2006 | EP1687812A1 System and method for audio signal processing |
| 08/08/2006 | US7089181 Enhancing the intelligibility of received speech in a noisy environment |
| 08/03/2006 | DE19703228B4 Verfahren zur Verstärkung von Eingangssignalen eines Hörgerätes sowie Schaltung zur Durchführung des Verfahrens A method of amplifying input signals of a hearing aid as well as circuitry for carrying out the method |
| 08/02/2006 | CN1268137C Method and apparatus for compression using reversible wavelet transforms and an embedded codestream |
| 07/26/2006 | EP1683391A2 System and method for controlling audio output |
| 07/25/2006 | US7081796 Radio frequency low noise amplifier with automatic gain control |
| 07/19/2006 | CN1806330A Limiter circuit and semiconductor integrated circuit thereof |
| 07/18/2006 | US7078975 Power amplifier module |
| 07/18/2006 | US7078972 Linear decibel-scale variable gain amplifier |
| 07/13/2006 | WO2006073609A1 Sound pressure level limiter with anti-startle |
| 07/12/2006 | EP1405408B1 Programmable logarithmic gain adjustment for open-loop amplifiers |
| 07/11/2006 | US7075368 Linear-in-decibel variable gain amplifier |
| 07/06/2006 | WO2005067609A3 Improved power supply rejection for pulse width modulated amplifiers and automatic gain control |
| 07/05/2006 | CN1263331C Method and appts. for amplifying input signal with DC and AC component |
| 06/29/2006 | US20060141964 Variable gain amplifier device |
| 06/29/2006 | US20060139821 Limiter circuit and semiconductor integrated circuit thereof |
| 06/28/2006 | EP1090457B9 Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
| 06/20/2006 | US7065334 Variable gain amplifier device |
| 06/15/2006 | US20060126865 Method and apparatus for adaptive sound processing parameters |
| 06/14/2006 | EP1192557B1 Anti-aliased clipping by band-limited modulation with step functions |
| 06/13/2006 | US7061312 Systems and methods for providing multi channel pulse width modulated audio with staggered outputs |
| 05/24/2006 | EP1466415B1 Wireless receiver without AGC |
| 05/17/2006 | CN1774861A Volume and compression control in movie theaters |
| 05/11/2006 | US20060098827 Acoustical virtual reality engine and advanced techniques for enhancing delivered sound |
| 05/04/2006 | WO2006020427A3 System for and method of audio signal processing for presentation in a high-noise environment |
| 04/27/2006 | WO2006044548A2 Clopidogrel compositions |
| 04/27/2006 | WO2005078921A3 Radio frequency low noise amplifier with automatic gain control |
| 04/27/2006 | US20060087380 Method for limiting the dynamic range of audio signals, and circuit arrangement for this purpose |
| 04/26/2006 | CN1765049A Volume control device for digital signals |
| 04/18/2006 | US7031684 Variable gain amplifier device |
| 04/11/2006 | US7027981 System output control method and apparatus |
| 04/06/2006 | DE19624092B4 Verstärkungsschaltung, vorzugsweise für analoge oder digitale Hörgeräte sowie Hörgeräte unter Verwendung einer entsprechenden Verstärkungsschaltung bzw. eines entsprechenden Signalverarbeitungs-Algorithmus Amplification circuit, preferably for analog or digital hearing aid as well as hearing aids using a corresponding amplifying circuit or a corresponding signal processing algorithm |
| 04/04/2006 | US7024260 Method and apparatus for processing digital audio signal |
| 03/30/2006 | DE102004044565A1 Verfahren zur Begrenzung des Dynamikbereichs von Audiosignalen und Schaltungsanordnung hierzu A method of limiting the dynamic range of audio signals, and circuitry for this purpose |
| 03/15/2006 | EP1635392A1 Limiter circuit and semiconductor integrated circuit thereof |
| 03/14/2006 | US7013161 Peak power reduction using windowing and filtering |
| 03/07/2006 | US7010283 Signal waveform detection circuit |
| 03/07/2006 | US7010118 Noise compensation methods and systems for increasing the clarity of voice communications |
| 02/23/2006 | WO2006020427A2 System for and method of audio signal processing for presentation in a high-noise environment |
| 02/23/2006 | US20060039572 Apparatus and method to limit current of an audio amplifier |
| 02/23/2006 | US20060038617 Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics |
| 02/23/2006 | CA2576829A1 System for and method of audio signal processing for presentation in a high-noise environment |
| 02/22/2006 | CN1739236A Gain variable voltage/current conversion circuit and filter circuit using the same |
| 02/21/2006 | US7003468 Method, apparatus, and program for envelope generation, audio compression, and audio expansion |
| 02/21/2006 | US7002395 Demodulating logarithmic amplifier |
| 02/16/2006 | US20060034471 System for and method of audio signal processing for presentation in a high-noise environment |
| 02/16/2006 | US20060034470 Processing of an audio signal for presentation in a high noise environment |
| 02/09/2006 | US20060028277 Power amplifier module |
| 01/26/2006 | US20060018306 IP telephone system, IP telephone apparatus and communications method |
| 01/25/2006 | EP1618760A1 Reciprocal index lookup for btsc compatible coefficients |
| 01/19/2006 | WO2006006977A1 Method for correcting metadata affecting the playback loudness and dynamic range of audio information |
| 01/19/2006 | US20060013414 Methods and related circuit for automatic audio volume level control |
| 01/19/2006 | US20060012434 Variable gain amplifier |
| 01/19/2006 | CA2566345A1 Method for correcting metadata affecting the playback loudness and dynamic range of audio information |
| 01/18/2006 | EP1616386A2 Volume and compression control in movie theaters |
| 01/12/2006 | WO2006003536A1 Method of and system for automatically adjusting the loudness of an audio signal |
| 01/12/2006 | US20060008096 Audio dynamics processing control system |
| 01/12/2006 | DE19534943B4 Vorrichtung zur Komprimierung unter Verwendung von eingebetteten Kleinwellen Apparatus for compression using embedded small waves |
| 01/11/2006 | EP1090457B1 Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
| 01/11/2006 | CN1720668A Power limit device and digital radio transmitter using the same |
| 01/05/2006 | US20060002572 Method for correcting metadata affecting the playback loudness and dynamic range of audio information |
| 12/29/2005 | WO2005124999A2 Peak-limiting mixer for multiple audio tracks |
| 12/29/2005 | US20050286394 Means for limiting an output signal of an amplifier stage |
| 12/28/2005 | EP1609241A2 Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility |
| 12/28/2005 | CN1714505A Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics |
| 12/22/2005 | US20050281418 Peak-limiting mixer for multiple audio tracks |
| 12/21/2005 | EP1606884A2 Clip detection in pwm amplifier |
| 12/21/2005 | EP1606875A1 Systems and methods for protection of audio amplifier circuits |
| 12/14/2005 | CN1232127C Method and apparatus for compression using reversible wavelet transforms and an embedded codestream |
| 12/08/2005 | WO2005117485A1 Volume adjusting apparatus |
| 11/30/2005 | EP1512237A4 Method and system for all digital gain control |
| 11/09/2005 | CN1694355A Wave damping protecting device of microphone |
| 11/03/2005 | DE102004016184A1 Verfahren zur Vermeidung von Hörschäden und Gehörschutzeinrichtung A method for avoiding hearing loss and hearing protection device |
| 10/27/2005 | US20050238185 Apparatus for reproduction of compressed audio data |
| 10/27/2005 | US20050238184 Apparatus and method for adjusting sound volume for televisions and other audio systems |
| 10/27/2005 | DE102005015599A1 AGC-Schaltung AGC circuit |
| 10/26/2005 | CN1689224A Means for limiting an output signal of an amplifier stage |
| 10/25/2005 | US6959275 System and method for enhancing the intelligibility of received speech in a noise environment |
| 10/25/2005 | US6958656 Power amplifier module |
| 10/25/2005 | US6958644 Active filter circuit with dynamically modifiable gain |
| 10/20/2005 | WO2005074129A3 Automatic audio signal dynamic range adjustment |
| 10/13/2005 | WO2005094743A1 Method for preventing hearing impairment and ear protection device |
| 10/13/2005 | US20050226444 Methods and apparatus for automatic mixing of audio signals |
| 10/12/2005 | CN1681205A Agc电路 Agc circuit |
| 10/12/2005 | CN1681204A Sound signal processing apparatus and sound signal processing method |
| 10/06/2005 | US20050221779 AGC circuit |
| 10/05/2005 | CN1677849A Sound-volume regulating device and method |
| 09/29/2005 | DE4311943B4 Schaltungsanordnung zum Begrenzen der Amplitude eines Nutzsignals Circuit arrangement for limiting the amplitude of a desired signal |
| 09/22/2005 | US20050207594 Sound signal processing apparatus and sound signal processing method |
| 09/21/2005 | CN1672325A Acoustical virtual reality engine and advanced techniques for enhancing delivered sound |
| 09/15/2005 | US20050201579 Feedback suppression |