Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › H03F 99 - Subject matter not provided for in other groups of this subclass
Patents for H03F 99 - Subject matter not provided for in other groups of this subclass (812)
03/2013
03/21/2013US20130070930 Auto-configuring audio output for audio performance and fault detection
03/19/2013US8401207 Motional feedback system
03/19/2013US8400221 Method and apparatus for biasing an amplifier
03/14/2013US20130064398 Class-AB/B amplifier with quiescent control circuit
03/14/2013US20130064397 Microphone amplifier
03/14/2013US20130064394 Digital signal generator and digital microphone
03/12/2013US8396242 Sound receiver
03/07/2013US20130058505 Circular loudspeaker array with controllable directivity
03/07/2013US20130058504 Multi-mode audio amplifiers
03/05/2013US8391514 Parametric transducer systems and related methods
02/2013
02/21/2013US20130044900 Audio playing device for electronic devices
02/21/2013US20130044895 Multi-channel class-d audio amplifier with planar inductors
02/19/2013US8379884 Sound signal transmitter-receiver
02/19/2013US8379882 Method and electronic device for driving a capacitance electro-acoustic transducer
02/14/2013US20130039515 Speaker component, speaker using same, electronic apparatus, and moving means
02/13/2013CN101627639B Audio system with synthesized positive impedance
02/07/2013US20130034250 Amplifier
02/07/2013US20130034249 Solid state audio power amplifier
02/07/2013US20130034248 Audio recording and playback device, and power feed method for audio recording and playback device
02/05/2013US8369542 Power control apparatus, speaker apparatus and power control method
01/2013
01/31/2013US20130028448 Audio signal processing method and audio signal processing apparatus therefor
01/29/2013US8363856 Audio amplifier circuit and electronic apparatus including the same
01/24/2013US20130022219 Voice coil speaker
01/24/2013US20130022211 Wirelessly triggered voice altering amplification system
01/03/2013US20130003995 Low-noise microphone pre-amplifier with active load element
01/03/2013US20130003994 Digital amplifier
12/2012
12/26/2012CN101228809B 声音接收装置 Sound receiving means
12/25/2012US8340326 Addressable amplified speaker assembly and method for addressing the same
12/20/2012US20120321106 Condenser microphone
12/20/2012US20120321101 Wireless mic system for automatically paring
12/18/2012US8335327 Audio signal amplifier for karaoke player
12/18/2012US8335326 Communication method for vacuum tube replacement devices
12/13/2012US20120314880 Stereo Headset Amplifier
12/06/2012US20120308051 Method and arrangement for driving a microphone
12/06/2012US20120308050 Efficiency optimizer of an audio power amplifier for car radio
12/04/2012US8325946 Input selector
11/2012
11/27/2012US8320574 Methods and systems for reducing acoustic echoes in communication systems
11/20/2012US8315408 Prevention of audio pop in a digital audio device
11/15/2012US20120288120 Power supply with rectifier protection
11/13/2012US8311243 Energy-efficient consumer device audio power output stage
11/13/2012US8311242 Amplifying an audio signal
11/08/2012US20120281857 Audio amplifier
11/08/2012US20120281855 Acoustic feedback suppression apparatus, microphone apparatus, amplifier apparatus, sound amplification system, and acoustic feedback suppression method
11/06/2012US8306245 Multi-mode audio amplifiers
10/2012
10/25/2012US20120269365 Acoustic apparatus, acoustic system, and audio signal control method
10/23/2012US8295513 Audio system adapters for audio signal distribution using electrical extension cables
10/18/2012US20120263325 Orientation-Responsive Acoustic Array Control
10/18/2012US20120263324 Orientation-Responsive Acoustic Driver Selection
10/18/2012US20120263323 Audio signal driver for flat sound generator
10/18/2012US20120263318 Smart line-in processing
10/16/2012CA2512832C Circuit and method for providing an auto-off and/or auto-on capability for an audio device
10/11/2012US20120257771 High-efficiency low-voltage-power-supply high-power-output audio driver architecture
10/11/2012US20120256685 Power Supply with Tickle Pulse Injection
10/09/2012US8284963 Method and apparatus for diminishing mismatch effects between switched signals
10/04/2012US20120250894 Apparatus including means for connecting to one or more outer speakers as well as means for detecting such a connection
09/2012
09/20/2012US20120237060 Method and apparatus for outputting audio signal
09/20/2012US20120237059 Electronic apparatus
09/18/2012US8270636 Photon audio amplifier and fiber link for audio systems
09/13/2012US20120230519 Versatile Audio Power Amplifier
09/13/2012US20120230518 Apparatus and method for amplification of audio content
09/13/2012US20120230517 Electronic device
09/11/2012US8265283 Acoustic processing device and acoustic processing method
09/06/2012US20120224717 Audio cable capable of increasing gain and filtering noise
09/06/2012US20120223980 Power supplying system
08/2012
08/23/2012US20120213382 Loudspeaker amplifier integration system
08/16/2012US20120207331 Preamplifier circuit and microphone having the same
08/16/2012US20120207330 Audio signal amplifying circuit
08/14/2012US8243968 Flat-panel television and audio equipment
08/14/2012US8243960 Planar audio amplifier output inductor with current sense
08/09/2012US20120200349 Rf power amplifier with spectrally grouped nanosized switches
08/04/2012CA2766527A1 Systems and methods for encoding control messages in an audio bitstream
07/2012
07/31/2012US8233643 System and method for amplifying low level signals provided on electrical supply power
07/31/2012US8233641 Method and topology to switch an output stage in a class ab audio amplifier for wireless applications
07/19/2012US20120183159 Mode switching noise cancellation for microphone-speaker combinations used in two way audio communications
07/19/2012US20120183158 Modular speaker system
07/19/2012US20120183157 Structure for amplifier
07/17/2012US8224009 Audio system with synthesized positive impedance
07/17/2012US8223995 Hexaphonic guitar amplifier and hexaphonic speaker cabinet
07/12/2012US20120177231 Interactive play system
07/12/2012US20120177230 Sound management device
07/12/2012US20120177215 Transducer with Integrated Sensor
07/10/2012US8218793 Apparatus and muting circuit
07/10/2012US8218776 Surge protection circuit for audio output device
07/05/2012US20120170774 Amplifier circuit
07/05/2012US20120170773 Amplifier with high-frequency noise removing function, microphone module, and sensor module
06/2012
06/26/2012US8208649 Methods and systems for robust approximations of impulse responses in multichannel audio-communication systems
06/21/2012US20120155676 Impedance matching speaker wire system
06/21/2012US20120155675 Microphone Amplifier
06/19/2012US8204250 Audio processing system and method
06/14/2012US20120148072 Apparatus and method for widening audio signal band
06/07/2012US20120140957 Apparatus, systems and methods for controlling an electronic device using an accesssory
06/07/2012US20120140944 Audio signal processing unit and audio transmission system, in particular a microphone system
06/05/2012US8194893 Wired in-ear monitor system
05/2012
05/31/2012US20120134514 Amplifier and amplifier control method
05/29/2012US8189816 Computer controlled amplifier and speaker system with power conservation feature
05/24/2012US20120128182 Analog-to-Digital Converter and Analog-to-Digital Conversion Method
05/24/2012US20120128181 Analog-to-Digital Converter, Sound Processing Device, and Method for Analog-to-Digital Conversion
05/24/2012US20120128180 Analog-to-Digital Converter and Analog-to-Digital Conversion Method
05/22/2012US8184831 Audio playing systems
05/22/2012US8184830 Audio amplifier with simplified electrical isolation
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