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8421641 |
Object detection system and method using sub-sampling
An object detection system, controller, and method using sub-sampling for detecting a presence of an object at the location. An electrode arranged near the location radiates an electric field that...
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8416963 |
System for providing a personalized driving sound
The present invention relates to a system for providing a personalized driving sound by using an active sound design. The system includes a sound design tool, a memory card, and an audio system....
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8401204 |
Method for the active reduction of sound disturbance
A method and a system for the active reduction, at a predetermined area, of the energy of a sound signal (dk(n)), also called a diffused noise signal, generated at the area by a primary signal...
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8384528 |
Method and apparatus for selectively varying motor vehicle sounds
An apparatus and method for customizing the sound emitted from an automotive vehicle during operation. Specifically, the vehicle operator uses a controller to vary the sound emitted from the engine...
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8379879 |
Active noise reduction system
An active noise reduction system is provided for receiving an audio input signal and a noise interference signal and calculating an audio broadcasting signal according to a Feedback Filtered-X...
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8378804 |
Active acoustic control apparatus
An active acoustic control apparatus includes an alert sound signal generator configured to generate an alert sound signal. An alert sound output device is configured to output an alert sound to an...
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8374356 |
Noise canceling apparatus and noise canceling method
Disclosed herein is a noise canceling apparatus including: a microphone configured to pick up ambient sound as noise; a first signal generator configured to receive a signal from the microphone to...
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8340963 |
Echo suppressing system, echo suppressing method, recording medium, echo suppressor, sound output device, audio system, navigation system and mobile object
An echo suppressing system includes: a sound output device for outputting sound based on a sound signal, including a passing section for allowing passage of a component of a different frequency...
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8335318 |
Active noise reduction adaptive filtering
An active noise reduction system that reduces the incidence of divergence in the presence of high amplitude interfering noise. A limited frequency range threshold is established.
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8325938 |
Handsfree call apparatus, acoustic reproducing apparatus with handsfree call function, and handsfree call method
A handsfree call apparatus includes: a speaker held in the vicinity of a user's ear by a holding unit with a speaker unit thereof not being attached to a baffle board so as to mix sounds emitted...
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8315385 |
Digital entroping for digital audio reproductions
The present invention provides a system and method for introducing white noises into a digital audio signal so that there is progressive and cumulative degradation in audio quality after each...
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8306234 |
System for improving communication in a room
Improving the acoustical communication between interlocutors in at least two positions in a room includes generating electrical signals representative of acoustical signals present at the...
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8300842 |
Robust system for sound enhancement from a single engine sensor
A noise enhancement system for an automobile utilizes a single input of engine speed to derive a control signal used to drive a speaker. The speaker generates sounds that enhance or replicate the...
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8285545 |
Voice command acquisition system and method
A voice command acquisition method and system for motor vehicles is improved in that noise source information is obtained directly from the vehicle system bus. Upon receiving an input signal with a...
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8280069 |
Noise reduction apparatus
In a noise reduction apparatus for controlling noise up to a predetermined upper limited frequency, a distance from a noise source to control point X is made larger than a distance obtained by...
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8270628 |
Method and system for actively influencing noise, and use thereof in a motor vehicle
Method for influencing noise, wherein a noise source (16), in particular an engine in a motor vehicle, generates the noise with a substantially periodically variable excitation, and wherein a...
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8270627 |
Adaptive noise control system
An adaptive noise control system is deployed in a box-like structure positioned within the transfer path along which the noise is being transmitted from the source of the generated noise to the...
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8270625 |
Secondary path modeling for active noise control
Methods for modeling the secondary path of an ANC system to improve convergence and tracking during noise control operation, and their associated uses are provided. In one aspect, for example, a...
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8260495 |
Method for reducing audible noise in a vehicle
A method for reducing noise in a vehicle by adjusting the rotational speed of various rotational components.
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8259958 |
Engine sound control apparatus and control method
An engine sound control apparatus capable of arranging a sound of a frequency that is lower than the fundamental-order frequency of the engine. The engine sound control apparatus detects the...
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8223985 |
Masking of pure tones within sound from a noise generating source
A method and system for masking pure tones within sound generated from a noise generating source. The method includes detecting one or more pure tones within sound being generated from the noise...
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8213628 |
Listening device for clear perception of sound signals in a noisy environment
The invention concerns a listening device (1) for transmitting electroacoustic signals comprising an earphone (2) and means for connecting said earphone (2) with a remote electroacoustic source...
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8208655 |
Wireless resonating surface speaker and method of using the same
A wireless speaker and mounting system for use with a resonating surface of an automobile includes a wireless speaker mechanism including a vibrator, the wireless speaker mechanism configured to...
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8208654 |
Noise cancellation for wireless audio distribution system
A wireless audio distribution system may have a wireless transmitter, responsive to a plurality of audio input channels, for transmitting signals carrying the audio, a receiver, responsive to the...
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8208651 |
Active sound blocker
A noise reduction system for actively blocking a noise source for a means of transport. The noise reduction system comprises at least one counter sound source and at least one intensity sensor. The...
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8204242 |
Active noise reduction adaptive filter leakage adjusting
An active noise reduction system using adaptive filters. A method of operation the active noise reduction system includes smoothing a stream of leakage factors. The frequency of a noise reduction...
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8199940 |
Audio reproduction system and speaker apparatus
An audio reproduction system includes: a first speaker arranged near a listener and behind a head of the listener with a speaker unit being held by first holding means to make it possible to mix...
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8199923 |
Active noise control system
An active control of an unwanted noise signal at a listening site radiated by a noise source uses a reference signal that has an amplitude and/or frequency such that it is masked for a human...
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8194873 |
Active noise reduction adaptive filter leakage adjusting
An active noise reduction system using adaptive filters. A method of operation the active noise reduction system includes smoothing a stream of leakage factors. The frequency of a noise reduction...
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8184820 |
Indirect acoustic transfer control of noise
A noise control system is directed to the path along which the noise is transmitted from the source of the noise being generated to the receiver of the noise in the passenger compartment of an...
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8184818 |
Double-talk detector with accuracy and speed of detection improved and a method therefor
A double-talk detector finds an estimated power value of near end background noise based on a residual signal by a noise estimator; the average power of a transmitter input signal by a transmitter...
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8175286 |
Recording, synthesis and reproduction of sound fields in an enclosure
The invention relates to simulation of sound fields in enclosures, for instance for application in listening tests, where test subjects assess the sound quality or other sound perception...
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8170227 |
Noise control device
A noise control device includes: four or more noise detectors each for detecting a plurality of noises arriving thereat, and outputting the noises as a noise signal; a control speaker for...
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8160266 |
Active vibratory noise control apparatus matching characteristics of audio devices
An active vibratory noise control apparatus has a speaker for canceling vibratory noise in the passenger compartment of a vehicle, the speaker being used as a speaker of one of different audio...
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8150055 |
Active noise control system and active vibration control system
An active noise control system includes a filter coefficient updating unit including an imaginary term estimator. The imaginary term estimator estimates an imaginary term Ie from a real term Re of...
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8144906 |
Wind immune microphone
Disclosed is an acoustic device comprising an enclosed housing defining an inner volume and having a front and a back; an acoustic port penetrating the front of the enclosed housing; a first and...
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8144889 |
Noise control system using smart materials
A noise control system operable within a box-like structure provided by the dual bulkhead plenum of the vehicle dashboard positioned within the transfer path along which the noise is being...
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8140255 |
On-vehicle guidance apparatus
An on-vehicle guidance apparatus is characterized in including an output sound control means for acquiring a sound volume setting of onboard equipment, a sound volume determining means for...
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8139467 |
Reduced energy consumption using active vibration control
Embodiments of a computer system that includes a vibration-cancelling mode, and a related method and computer-program product (e.g., software) for use with the computer system, are described....
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8126159 |
System and method for creating personalized sound zones
Speakers deployed in a space and divided into groups associated with different zones produce a mix of sounds that create internal noise pollution and, combined with external noise, an unpleasant...
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8121307 |
In-vehicle sound control system
An in-vehicle sound control system structured so that sound sources, a vehicle speed detection unit for detecting a vehicle running speed, and an acoustic reproduction apparatus are connected to...
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8111834 |
Vehicular active noise control system
A frequency detecting circuit estimates the frequency fp of a propeller shaft based on the frequency fc of vehicle speed pulses, and calculates a control frequency fp′ which is a harmonic of the f...
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8111835 |
Active noise control apparatus
A subtractor subtracts an echo canceling signal from a canceling error signal to estimate the resonant noise to be silenced at a position of a microphone, and outputs a first basic signal...
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8103017 |
Sound reproducing system and automobile using such sound reproducing system
A sound reproduction system provided for in-vehicle use includes: a music signal source; a first group of a first transducer, a second transducer, a third transducer and a fourth transducer...
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8098836 |
Active vibratory noise control apparatus
When the frequency of an engine rotation signal reaches a predetermined frequency, a comparator of a switching unit outputs a switching control signal to selectors and a filter coefficient updater....
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8098837 |
Active noise control apparatus
A subtractor subtracts an echo canceling signal Ĉ·y1(n−1) from a canceling error signal e(n) to estimate a residual noise to be silenced at the position of a microphone, and outputs a first bas...
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8094809 |
Frame-based level feedback calibration system for sample-based predictive clipping
A feedback calibration system and a method for controlling an electronic signal are disclosed. The feedback calibration system includes an input controller adapted to modify an input signal in...
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8064612 |
Vehicular active vibratory noise control apparatus
A subtractor subtracts a first control signal output from a first bandpass filter from an error signal, and supplies a differential signal to a second bandpass filter. The second bandpass filter,...
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8045725 |
Vehicle interior active noise cancellation
A vehicle has an electric drive mode, a body defining a vehicle interior, a first and second set of audio speakers positioned outside and inside of the interior, respectively, and a controller. The...
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8036396 |
Vehicular active vibratory noise control apparatus
A vehicular active vibratory noise control apparatus includes an adaptive notch filter (second control signal generating unit) for generating a corrected error signal representative of a road noise...
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