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6782107 |
Method and arrangement for automatically controlling the volume in an audio signal reproduction device
An arrangement and a method for automatically controlling the volume in an audio signal reproduction device. A digital signal processing circuit, which is arranged in the audio signal path for...
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6775387 |
Three-step ramped reference to reduce popping noises on audio circuit
Provided is a method ( 500 ) and audio circuit ( 100 ) for reducing popping noise in a load ( 140, 145 ) connected to the audio circuit, especially during audio circuit start-up. The method applies...
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6763275 |
METHOD FOR PROCESSING AND REPRODUCING AUDIO SIGNAL AT DESIRED SOUND QUALITY, REDUCED DATA VOLUME OR ADJUSTED OUTPUT LEVEL, APPARATUS FOR PROCESSING AUDIO SIGNAL WITH SOUND QUALITY CONTROL INFORMATION OR TEST TONE SIGNAL OR AT REDUCED DATA VOLUME, RECORDING MEDIUM FOR RECORDING AUDIO SIGNAL WITH SOUND QUALITY CONTROL INFORMATION OR TEST TONE SIGNAL OR AT REDUCED DATA VOLUME, AND APPARATUS FOR REPRODUCING AUDIO SIGNAL AT DESIRED SOUND QUALITY, REDUCED DATA VOLUME OR ADJUSTED OUTPUT LEVEL
A digital audio signal obtained from an analog audio signal indicating a music, pieces of audio reproduction control information respectively indicating the adjustment of a sound quality of the...
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6763253 |
Device for bi-directional transmission of audio and/or video signals
Proposed by the invention is a device for the bidirectional transfer of audio and/or video signals, in particular in the context of sound and/or image reports, with: at least one means ( 6 ) for...
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6760453 |
Portable terminal device for controlling received voice level and transmitted voice level
A level of a voice inputted from a microphone 1 is detected in a level detecting section 2 . An instantaneous voice level which is sampled every a predetermined time is subjected to an average...
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6757659 |
Audio signal processing apparatus
An audio signal encoding apparatus includes a device for compressing multiple-channel digital audio signals into compression-resultant multiple-channel signals respectively. The multiple-channel...
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6757575 |
Systems and methods for implementing audio de-clicking
Digital signal processing systems and methods for smoothing out an audio signal having an abrupt transition in volume. A DSP in an audio visual recording device is configured to smooth out...
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6748089 |
Switch responsive to an audio cue
The present invention provides a switch method and apparatus that is switchable among a plurality of operational modes by attenuating an input audio signal detected by the apparatus. The apparatus...
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6744882 |
Method and apparatus for automatically adjusting speaker and microphone gains within a mobile telephone
The mobile telephone is provided with the capability for automatically adjusting the gain of a microphone of the telephone based upon the detected noise level in which the cellular telephone is...
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6725111 |
METHOD FOR PROCESSING AND REPRODUCING AUDIO SIGNAL AT DESIRED SOUND QUALITY, REDUCED DATA VOLUME OR ADJUSTED OUTPUT LEVEL, APPARATUS FOR PROCESSING AUDIO SIGNAL WITH SOUND QUALITY CONTROL INFORMATION OR TEST TONE SIGNAL OR AT REDUCED DATA VOLUME, RECORDING MEDIUM FOR RECORDING AUDIO SIGNAL WITH SOUND QUALITY CONTROL INFORMATION OR TEST TONE SIGNAL OR AT REDUCED DATA VOLUME, AND APPARATUS FOR REPRODUCING AUDIO SIGNAL AT DESIRED SOUND QUALITY, REDUCED DATA VOLUME OR ADJUSTED OUTPUT LEVEL
A digital audio signal obtained from an analog audio signal indicating a music, pieces of audio reproduction control information respectively indicating the adjustment of a sound quality of the...
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6724897 |
Amplifier with alternate output level
A guitar amplifier having an input terminal, an audio output and an audio level controller connected between the input terminal and the audio output. The audio level controller includes a first...
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6704421 |
Automatic multichannel equalization control system for a multimedia computer
In one embodiment, an automatic multichannel equalization control system uses programmable multichannel templates containing equalization control values for a programmable multichannel audio...
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6697687 |
Image display apparatus having audio output control means in accordance with image signal type
An image display apparatus capable of automatically controlling an output status for each of audio information signals inputted with image information signals from various different image sources....
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6678382 |
Digital attenuator
Apparatus and a concommitant method for generating an approximation of a logarithmically attenuated value of a digital signal in predefined increments. Specifically, the apparatus comprises a shift...
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6661900 |
Digital graphic equalizer control system and method
A digital graphic equalizer uses a predetermined number of equalizing bands each having a different center frequency, and the center frequencies span a predetermined audio bandwidth. For each...
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6658120 |
Polarity-independent transmission system
A generally asymptotic incoming audio signal is split into positive and negative components. Two separate polarity-independent variable-gain amplifiers act upon the positive and negative components...
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6654468 |
Apparatus and method for matching the response of microphones in magnitude and phase
An apparatus is provided for matching the response of a pair of microphones. The two microphones provide a first and second output, respectively, in response to an audible input. The microphone...
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6650755 |
Voice-to-remaining audio (VRA) interactive center channel downmix
A method for decoding an audio signal includes receiving a digital audio signal having a plurality of channels defined thereon, wherein one of the plurality of channels is a center channel and at...
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6643376 |
Method and apparatus for individual control of audio to loudspeakers located from a central control
In a home or business where there is a central sound source for a stereo and one or more sets of loudspeakers which are located remote as in different rooms from the sound source. A volume control...
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6636609 |
Method and apparatus for automatically compensating sound volume
A method and apparatus for automatically compensating a sound volume are disclosed. The method includes the steps of determining whether a channel conversion key and an audio input switching key...
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6628999 |
Single-chip audio system volume control circuitry and methods
An audio system 100 includes circuitry 116 for generating an audio data stream and circuitry 103 for generating digital words defining a volume control level. System 100 also includes...
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6618486 |
Controller for FM 412 multiplex power regulation
A feedback controller, embedded in an FM audio processor, that controls the “integrated multiplex power” to the requirements of ITU-R 412 (2.51) is disclosed. This regulation specifies the...
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6603858 |
Multi-strategy array processor
An apparatus and method for processing sound, suitable for use in association with a hearing aid, cochlear implant prosthesis or the like. Coupled to an array of microphones ( 1 ) are a pair of...
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6594368 |
DVE system with dynamic range processing
A digital voice enhancement, DVE, communication system includes a dynamic range processor and method altering dynamic range of the electrical signal from the microphone to the loudspeaker by...
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6584201 |
Remote automatic volume control apparatus
An automatic remote control device and method which compensates for ambient, environmental noise changes and sudden changes in program material volume. The microphones and circuitry associated with...
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6560497 |
METHOD FOR PROCESSING AND REPRODUCING AUDIO SIGNAL AT DESIRED SOUND QUALITY, REDUCED DATA VOLUME OR ADJUSTED OUTPUT LEVEL, APPARATUS FOR PROCESSING AUDIO SIGNAL WITH SOUND QUALITY CONTROL INFORMATION OR TEST TONE SIGNAL OR AT REDUCED DATA VOLUME, RECORDING MEDIUM FOR RECORDING AUDIO SIGNAL WITH SOUND QUALITY CONTROL INFORMATION OR TEST TONE SIGNAL OR AT REDUCED DATA VOLUME, AND APPARATUS FOR REPRODUCING AUDIO SIGNAL AT DESIRED SOUND QUALITY, REDUCED DATA VOLUME OR ADJUSTED OUTPUT LEVEL
A digital audio signal obtained from an analog audio signal indicating a music, pieces of audio reproduction control information respectively indicating the adjustment of a sound quality of the...
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6548749 |
Electronic musical instrument and tone volume control method
Multipliers respectively multiply a tone signal supplied from a sound source and a tone signal corrected by a filter according to hearing correction characteristics by balance control coefficients...
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6535611 |
Method and apparatus for reducing switching noise of a digital volume control
An audio interface is coupled to received a music signal and a microphone signal. The music signal and a volume control signal are combined in a multiplier to produce a volume adjusted music...
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6534700 |
Automated compilation of music
During mixing of two musical tracks, the variations in combined output volume are reduced by analyzing either the intrinsic amplitude at which each track was mastered or the output amplitude (i.e....
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6498855 |
Method and system for selectively and variably attenuating audio data
A method and system for selectively and variably attenuating audio data are disclosed. A high-volume control value as selected by a user is first received, and this high-volume control value...
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6487178 |
Methods and apparatus for providing volume control in communicating systems including a linear echo canceler
In handsfree communications devices including a linear echo or noise canceler, both analog and digital gain factors are adjusted in response to user volume control inputs, the analog gain factor...
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6473662 |
Signal compressor for audio apparatus
A method of signal compression of a signal to reduce the large dynamic range, for example, of the output signal of a CD player in such a way that soft passages of a piece of music are reproduced in...
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6448856 |
Electronic volume circuit
An electronic volume circuit is provided, which can be driven by a single power source and can therefore be formed by an LSI that can be fabricated in a simple manner using an oxide film and a...
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6445802 |
Sound volume controllable communication apparatus
A sound volume-controllable communication apparatus capable of outputting signals as monitoring sounds simultaneously with the transmission and reception of the signals is disclosed. At the time of...
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6442281 |
Loudness volume control system
Difference compensation circuits are connected to a volume controller having a tap in series. Each of the difference compensation circuit comprises a voltage control amplifier and an external CR...
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6442278 |
Voice-to-remaining audio (VRA) interactive center channel downmix
A method for decoding an audio signal includes receiving a digital audio signal having a plurality of channels defined thereon, wherein one of the plurality of channels is a center channel and at...
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6405092 |
Method and apparatus for amplifying and attenuating digital audio
An apparatus for controlling audio signals having pulse code modulation (PCM) data and methods of operating the same result in efficient modulation of the audio signals. The apparatus for...
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6404892 |
Reduced complexity audio mixing apparatus
A plurality of audio inputs which require gain applied are coupled together, the gain is applied and that weighted signal is summed with the output of similar circuits running with different gains....
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6396549 |
Remote controller for a multi-device television receiving system providing channel number auto-completion, presettable audio hush level and base channel auto-reaffirm
A handheld remote controller for a televisor that automatically prefixes a single-digit program channel selection, typically between 2 and 9, with a leading zero in response to a prolonged...
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6389139 |
Powered volume control for distributed audio system
A powered volume control is provided for a distributed audio system having a plurality of remote speakers. An amplifier or signal conditioner is provided having a dual channel amplified signal from...
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6377862 |
Method for processing and reproducing audio signal
A digital audio signal obtained from an analog audio signal indicating a music, pieces of audio reproduction control information respectively indicating the adjustment of a sound quality of the...
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6370255 |
Loudness-controlled processing of acoustic signals
With the method acoustic signals, e.g. in hearing aids, are processed in loudness-controlled manner in such a way that the loudness subjectively received by the hearing impaired person again always...
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6370254 |
Audio-visual reproduction
An audio-visual reproduction system includes an audio signal source, a video signal source and a plurality of audio-visual reproduction devices connected to the audio source and the video source...
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6360187 |
Ambient adjusted volume control for in-vehicles messages
The reproduction sound level of high priority messages such as navigation instructions, parking aid signals, and back-up warning signals is controlled based on the average ambient sound level in a...
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6332026 |
Bass management system for home theater equipment
A setup to be used in a home theater or sound reproduction system for handling low frequency sound signals with a signal source providing several full bandwidth digital sound channels and at least...
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6317502 |
Electronic volume control circuit with controlled output characteristic
A volume control signal voltage is applied to one terminal of a resistor 50, flowing a current corresponding to the volume control signal voltage through the resistor 50. The other terminal of the...
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6317117 |
User interface for the control of an audio spectrum filter processor
A user interface control apparatus is disclosed for the control of electronic filter parameters of audio spectrum equalizers, crossovers, and other filter processors. The user interface apparatus...
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6298139 |
Apparatus and method for maintaining a constant speech envelope using variable coefficient automatic gain control
An apparatus and method for maintaining a constant speech envelope using automatic gain control, wherein the level of the audio signal is monitored. If increasing, a first level of gain increase is...
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6272227 |
Simultaneous two-way communication apparatus using ear microphone
The apparatus eliminates howls to permit a received sound to increase in sound volume to enable the apparatus to be used in high-noise areas, and comprises: a transceived sound volume control...
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6266425 |
Audio amplifier circuit and audio device using the circuit
An audio signal amplifier circuit and an audio device are characterized by comprising: an arithmetic circuit which receives digital audio signals and generates in response to digital control...
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