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7630501 |
System and method for calibration of an acoustic system
The present invention is directed to a method and system for automatic calibration of an acoustic system. The acoustic system may include a source A/V device, calibration computing device, and...
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7616767 |
Method and device for determining acoustical transfer impedance
The method comprises generating an acoustical volume velocity Q in the listening position, measuring a response quantity p, such as sound or vibration, at a suspected source position resulting from...
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7610810 |
Methods for producing acoustic sources
Embodiments include an acoustic source for use in a hemi-anechoic chamber comprising a source assembly and a waveguide assembly for producing sound outside of a measurement hemisphere and...
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7602923 |
Electro acoustic system built-in test and calibration method
An electro acoustic system built-in test and calibration method utilizes a built-in self-test module to send a test signal through a first circuit device to an audio transmitter, causing the audio...
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7593535 |
Neural network filtering techniques for compensating linear and non-linear distortion of an audio transducer
Neural networks provide efficient, robust and precise filtering techniques for compensating linear and non-linear distortion of an audio transducer such as a speaker, amplified broadcast antenna or...
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7529377 |
Loudspeaker with automatic calibration and room equalization
A loudspeaker, such as a subwoofer, is provided which automatically calibrates itself when placed in a room to optimize an output signal of the loudspeaker for the room in which the loudspeaker is...
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7526093 |
System for configuring audio system
A system is provided for configuring an audio system for a given space. The system may statistically analyze potential configurations of the audio system to configure the audio system. The...
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7505824 |
Audio signal processing apparatus and audio signal processing method
An audio signal processing apparatus and method in which power supplied to a power amplifier is controlled in a wide range from a small output power level to a large output power level in...
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7497003 |
Apparatus and method for supporting speaker design, and program therefor
The speaker design support apparatus can reduce time for designing the speaker instead of many design trials, and comprises the input means that a user inputs necessary data for voice coil and for...
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7492912 |
Multi-channel speaker system and a connection system thereof
The present invention relates to a multi-channel speaker system and a wiring device thereof. The wiring device for a multi-channel speaker system according to an embodiment of the present invention...
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7492909 |
Method for acoustic transducer calibration
A method of acoustic transducer calibration ( 200, 400 ) using a band limited pseudo random noise source with an internal digital signal processor ( 209, 403 ) to tailor audio characteristics of an...
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7489784 |
Automatic sound field correcting device and computer program therefor
An automatic sound field correcting device executes a signal process to the plurality of audio signals on respective correspondent signal transmission paths, and outputs them to a plurality of...
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7483540 |
Automatic audio system equalizing
An automated process for equalizing an audio system and an apparatus for implementing the process. An audio system includes a microphone unit, for receiving the sound waves radiated from a...
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7477751 |
Method and apparatus for sound transduction with minimal interference from background noise and minimal local acoustic radiation
A transducer senses sounds produced by a talker or other source and measures acceleration of air. Enhancement of acceleration is accompanied by reduction of the portion of the sound energy that...
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7477750 |
Signal delay time measurement device and computer program therefor
A signal delay time measurement device outputs, to a sound space, a measurement signal sound corresponding to a measurement signal such as a pulse signal, and obtains a response signal indicating a...
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7474752 |
Audio frequency range adaptation
To improve the reproduction of audio signals, the signal components of a selected audio frequency range ( 1 ) of an audio signal are concentrated in a narrower audio frequency range (II). This is...
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7454022 |
Multi-mode ambient soundstage system
A multi-mode sound reproduction device is disclosed including a direct radiation sound device, a diffuse radiation sound device and a selection device in signal communication with both the direct...
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7447318 |
System for using digital signal processing to compensate for power compression of loudspeakers
This invention provides a compensation system capable of compensating for power loss due to the power compression effects of the voice coil as the temperature of the voice coil increases. To...
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7372966 |
System for limiting loudspeaker displacement
Loudspeakers can be damaged by high drive signals. One reason for this damage is an excess vibration displacement of the coil-diaphragm assembly. This invention describes a novel method for...
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7366577 |
Programmable analog input/output integrated circuit system
The programmable analog input/output integrated circuit system includes a plurality of integrated circuit pins, an analog input/output circuit, a control module, and a switching module. The analog...
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7362871 |
Audio amplifier circuit and audio IC having the same
In the present invention, in parallel with a resistor which determines an amplification rate being fed back from an output to an input of an output stage OP amp in an audio amplifier circuit,...
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7359519 |
Method and apparatus for compensating for nonlinear distortion of speaker system
A method and an apparatus for compensating for nonlinear distortion are provided to divide audio signals reproduced in a nonlinear speaker system into linear and nonlinear components in a time...
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7340272 |
Mobile communication terminal having a three-dimensional surround sound effect and its control method
A mobile communication terminal with three-dimensional surround-sound effect system has a data processing section for coding and modulating a transmitting signal or demodulating and decoding a...
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7336793 |
Loudspeaker system for virtual sound synthesis
A sound system obtains a desired sound field from an array of sound sources arranged on a panel. The desired sound field allows a listener to perceive the sound as if the sound were coming from a...
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7315625 |
Sound apparatus, method of changing sound characteristics, and data recording medium on which a sound correction program
This invention is a sound apparatus having a plurality of different kinds of speakers and that independently performs correction of the sound signal for each speaker to obtain optimum sound and...
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7209566 |
Method and apparatus for determining a nonlinear response function for a loudspeaker
A nonlinear response function of a loudspeaker is determined by an iterative process during which the nonlinear response function and a linear response associated with an echo and microphone are...
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7184556 |
Compensation system and method for sound reproduction
A sound compensation system alters an electrical audio signal for input to a sonic reproduction device having associated behavioral characteristics. The behavior characteristics of the device are...
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7170396 |
Addressable smart speaker
An addressable smart speaker for use in a fire alarm system connects to and receives messages over a network, has plural taps for selecting audio power. In response to a command, a selector in an...
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7158643 |
Auto-calibrating surround system
A multi-channel surround sound system and method is described that allows automatic and independent calibration and adjustment of the frequency, amplitude and time response of each channel of the...
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7155017 |
System and method for controlling audio signals for playback
An apparatus and method for controlling a plurality of speakers, comprising an amplifier for amplifying and outputting a play signal to be played over the speakers; and at least one sensor disposed...
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7143649 |
Sound characteristic measuring device, automatic sound field correcting device, sound characteristic measuring method and automatic sound field correcting method
In order to measure a sound characteristic in a sound space, measurement sound is outputted to the sound space. Measurement sound data of a predetermined time period, which is prepared in advance,...
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7139402 |
Sound reproduction device
A sound reproduction device of the present invention includes: a first loudspeaker; a second loudspeaker; a first loudspeaker drive section for driving the first and second loudspeakers, the first...
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7136495 |
Loudspeaker device
A loudspeaker device comprising a power amplifier ( 13 ) to which an input signal is delivered via a subtracter ( 6 ), a speaker unit ( 1 ) for reproducing output signals delivered from the power...
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7116790 |
Loudspeaker
Conventional analog loudspeakers have a limited dynamic range as compared to the available dynamic range of digital recordings. Digital recordings use up to 24 bits and this implies a dynamic range...
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7113607 |
Low frequency feedback controlled audio system
The present invention provides a feedback-controlled audio system. A single internal pressure-sensitive detector is used as the sensor. The primary radiator is mounted facing inward to minimize...
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7106865 |
Speaker diagnostics based upon driving-point impedance
A speaker ( 100 ) having a diagnostic capability, as well as a circuit ( 101 ) and related methods ( 500 ) for performing speaker diagnostics based upon a driving-point impedance are provided. The...
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7103187 |
Audio calibration system
An audio calibration system includes control logic, an input device, a display, a noise generator, an inverter, a plurality of speakers, and a delay module coupled to each speaker. Upon receipt of...
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7099483 |
Sound control system, sound control device, electronic device, and method for controlling sound
A sound control system includes a plurality of electronic devices connected to a communication network, each of the electronic devices being capable of independently producing sound from connected...
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7099481 |
Method and system for automatically detecting and powering PC speakers
A method of powering an audio output device of a computer system, by determining whether a passive or active audio output device is connected to an audio output jack of the computer system and,...
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7095455 |
Method for automatically adjusting the sound and visual parameters of a home theatre system
A system is provided for setting various acoustic and visual parameters to improve the reproduction of audio signals and visual signals. The system incorporates a hand-held remote control device...
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7092536 |
System for transducer compensation based on ambient conditions
A system for transducer compensation based on ambient conditions includes a transducer, a signal processor and an ambient condition sensor. The signal processor may process audio signals for the...
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7092535 |
Environment adaptable loudspeaker
It is known to make the performance of a loudspeaker “environment adaptive” in controlling a filter unit based on a measurement of the velocity/acceleration of the loudspeaker diaphragm and the...
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7092531 |
Sound output apparatus for an automotive vehicle
An output section, consisting of a pair of loudspeakers disposed adjacently to each other, is installed inside a seatback of a designated seat. Sound output surfaces of respective loudspeakers face...
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7092528 |
Apparatus and methods for reducing noise audible from a speaker
A method and apparatus for reducing speaker noise involves producing a control signal indicating whether or not audio program content is imminent in an audio signal operable to be transmitted to a...
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7065221 |
Speaker apparatus
A speaker apparatus in which a reproduced sound from a speaker unit is detected by a microphone and the reproduced sound from the speaker unit is corrected based on the detected signal. The speaker...
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7058430 |
Mobile communications terminal with a hands-free mode
A mobile communications terminal is provided having a first loudspeaker for emitting sound signals in a normal mode of the communications terminal, a second loudspeaker for emitting sound signals...
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7058186 |
Loudspeaker device
An anti-oscillation loudspeaker device where a reproduced sound is compensated based on a acoustic signal detected by a microphone and a reproduced band is enlarged is provided. In this loudspeaker...
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7054450 |
Method and system for ensuring audio safety
The invention concerns a method ( 200 ) and a system ( 100 ) for ensuring audio safety in an audio device ( 110 ). The system includes a processor ( 112 ), a sensor ( 116 ), an analog safety...
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7050594 |
Sound control unit and sound system
A motional feedback (MFB) signal control unit includes a vibration displacement calculating part which generates a vibration displacement detecting signal in response to the input of a vibration...
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7043028 |
Method and system for using an audio transducer as both an input and output device in full duplex operation
A method and system for using an audio transducer as both an input device and an output device is disclosed. The method and system include digitally modulating a primary input signal for driving...
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