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Class 381/103 - Having automatic equalizer circuit


Subclass of Class 381 - Electrical audio signal processing systems and devices
Definition: Subject matter designed to compensate for an undesired amplitude-frequency
No. of applications: 114
Last issue date: 05/02/2013


  2    
Application No.Application TitleIssue Date
20090290725AUTOMATIC EQUALIZER ADJUSTMENT SETTING FOR PLAYBACK OF MEDIA ASSETS
Systems and methods are disclosed in which correspondences with content or other media assets can be established such that a media player or portable media device can automatically modify or adjust an equalizer setting based on information associated with the content or...
11/26/2009
20090274307AUDIO SYSTEM
Disclosed is an audio system including a group of loudspeakers that form a sound field by delivering into a single space sound signals passed through respective ones of a plurality of sound signal channels. This audio system is comprised of two characteristic-variable e...
11/05/2009
20090274309METHOD AND SYSTEM FOR EQUALIZING A LOUDSPEAKER IN A ROOM
A method and a system for equalizing one or more loudspeaker(s), e.g. a hi-fi system, positioned in a room in order to compensate sound reproduction from the loudspeaker for an influence of the room. The method includes measuring a listening position transfer function (...
11/05/2009
20090232329EQUALIZATION METHOD USING EQUAL LOUDNESS CURVE, AND SOUND OUTPUT APPARATUS USING THE SAME
An equalization method using equal loudness curve, and a sound output apparatus using the same are disclosed. An audio signal is equalized using a standard loudness curve so as to increase a loudness of an audio signal. A sound quality can be significantly enhanced with...
09/17/2009
20090220108PROCESSING OF AN AUDIO SIGNAL FOR PRESENTATION IN A HIGH NOISE ENVIRONMENT
In accordance with the invention, audio signals are specially processed for sound presentation in a high noise environment. The electrical signal representative of the sound is first subjected to equalization to preferentially reduce the magnitude of bass signals while ...
09/03/2009
20090220098ADAPTIVE BASS MANAGEMENT
The invention relates to a method for adapting sound pressure levels in at least one listening location, the sound pressure being generated by a first and a second loudspeaker, each loudspeaker having a supply channel arranged upstream thereto, where at least the supply...
09/03/2009
20090174823Equalizer Interface for Electronic Apparatus
An electronic apparatus such as an audio apparatus, television signal receiver, or other apparatus provides an equalizer interface that enables equalizer settings to be adjusted via acoustic user feedback. According to an exemplary embodiment, the electronic apparatus i...
07/09/2009
20090086995AUTOMATIC BASS MANAGEMENT
A method for an automatic equalization of sound pressure levels in at least one listening location, where the sound pressure is generated by a first and at least a second loudspeaker, comprising supplying an audio signal of a programmable frequency to each loudspeaker, ...
04/02/2009
20090074206METHOD OF ENHANCING SOUND FOR HEARING IMPAIRED INDIVIDUALS
A portable assistive listening system for enhancing sound for hearing impaired individuals includes a fully functional hearing aid and a separate handheld digital signal processing (DSP) device. The focus of the present invention is directed to the handheld DSP device a...
03/19/2009
20090074207Mobile communication device capable of setting tone color and method of setting tone color
A mobile communication device and a method of setting tone color, which allow a user to set the tone color of received sound. Provided are a normal mode, which sets the equalizer using GCF standards stored in an internal memory or equalizer setting values selected by a ...
03/19/2009
20090067664METHOD FOR EQUALIZING AUDIO, AND VIDEO APPARATUS USING THE SAME
A method for equalizing audio and a video apparatus using the audio equalizing method are provided. The method for equalizing audio includes detecting the distance between a speaker mounted in a video apparatus and a reflective surface, and equalizing an audio signal to...
03/12/2009
20090047993METHOD OF USING MUSIC METADATA TO SAVE MUSIC LISTENING PREFERENCES
To improve the consumer experience with electronic devices, an improved system and method is provided for selecting and applying optimal settings for listening to digital music. In exemplary embodiments, optimal equalizer settings for a given song or music category may ...
02/19/2009
20080292114Audio reproducing apparatus
An audio signal processing apparatus includes a harmonic overtone adder and an equalizer. The harmonic overtone adder includes a high-pass filter for extracting from an audio signal higher than a first predetermined frequency, a filter for extracting a frequency compone...
11/27/2008
20080285775SOUND TUNING METHOD
The invention relates to a method for automated tuning of a sound system, the sound system comprising delay lines, equalizing filters, and at least two loudspeakers, the method comprising the steps of reproducing a useful sound signal through the loudspeakers, measuring...
11/20/2008
20080260179Active loudspeaker
In an active loudspeaker, a bridge rectifier generates an unregulated DC voltage from the AC mains power supply voltage. A self-oscillating pulse modulator generates a pulse-modulated switch signal that is controlling a power switch stage which is switching the unregula...
10/23/2008
20080240467FREQUENCY-WARPED AUDIO EQUALIZER
In certain embodiments, an improved audio equalization filter can be generated by frequency warping one or more digital filters having a plurality of frequency bands. Frequency warping can include, for example, transforming at least some of the frequency bands of the on...
10/02/2008
20080212798System and Method for Intelligent Equalization
An equalizer/mixer receives an input signal from a musical source and equalizes the input signal based on the musical source using equalization parameters associated with the musical source. User-adjustable equalization controls may be applied where the equalization par...
09/04/2008
20080205667Room acoustic response modeling and equalization with linear predictive coding and parametric filters
A method for determining coefficients of a family of cascaded second order Infinite Impulse Response (IIR) parametric filters used for equalizing a room response. The method includes determining parameters of each IIR parametric filter from poles or roots of a reasonabl...
08/28/2008
20080192957FILTER COEFFICIENT CALCULATION DEVICE, FILTER COEFFICIENT CALCULATION METHOD, CONTROL PROGRAM, COMPUTER-READABLE STORAGE MEDIUM, AND AUDIO SIGNAL PROCESSING APPARATUS
In a filter coefficient calculation device according to the present invention, a gain correction characteristic calculation section calculates impulse responses corresponding to a linear-phase filter having an inverse characteristic of a gain characteristic of a reprodu...
08/14/2008
20080175411PLAYER DEVICE WITH AUTOMATIC SETTINGS
The invention relates to a multimedia player device for playing multimedia with automatic sound and video settings, and particularly a player device for playing sound from a data file, capable of automatic equalizer setting based on meta-data contained in the data file....
07/24/2008
20080170723Audio Reproducing Apparatus and Method, and Computer Program
An audio reproducing device (100) includes: (i) signal level detection means (102) for detecting a signal level of an audio signal; (ii) sound pressure adjusting means (104) for changing the sound pressure level indicating the amplification ratio of...
07/17/2008
20080118085Sound signal equalizer and signal equalizer
A bass and treble audio tone control circuit configured as an integrated circuit, wherein a capacitor for setting a frequency band can be accommodated in an integrated circuit. A low sound region component SLO is extracted by an LPF (30) from an initia...
05/22/2008
20080101620LOUDSPEAKER 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 live source and from a specified location. Setup of the sound system inclu...
05/01/2008
20080080720SYSTEM AND METHOD FOR INTELLIGENT EQUALIZATION
An equalizer/mixer receives an input signal from a musical source and Equalizes the input signal based on the musical source using equalization parameters Associated with the musical source. User-adjustable equalization controls may be Applied where the equalization par...
04/03/2008
20080075303Equalizer control method, medium and system in audio source player
An equalizer control system is provided. The equalizer control system includes a first sound mode identifier to identify a first sound mode for controlling the equalizer from a plurality of sound modes, by classifying an audio feature value, extracted from a sequential ...
03/27/2008
20080069378Automatic 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 plurality of speakers, acoustic measuring circuitry, for calculating frequency re...
03/20/2008
20080013753ENVIRONMENTALLY CONTROLLED FREQUENCY RESPONSE MODIFICATION FOR LONG RANGE HAILING SYSTEM
Systems and methods for altering audio for more effective delivery to long range targets. An example of the present invention includes a speaker coupled to a processor and one or more sensors suitable for sensing environmental conditions such as temperature and humidity...
01/17/2008
20080013752Audio entertainment system equalizer and method
An audio entertainment system and method for providing controlled equalization of sound from an external source is provided. The audio entertainment system includes a first audio device having an equalizer with first equalization settings and an output for providing an ...
01/17/2008
20080002839Smart equalizer
An equalizer setting is stored for an audio file or an audio portion of an audio/video file and is then processed when the audio file is selected for playback. When a user operating a media device adjusts an equalizer setting of an audio file, the setting is associated ...
01/03/2008
20070291958Creating Music by Listening
Automated creation of new music by listening is disclosed. A method to create new music may comprise listening to a plurality of music, learning from the plurality of music, and performing concatenative synthesis based on the listening and the learning to create the new...
12/20/2007
20070253577Equalizer bank with interference reduction
An equalizer bank with interference reduction is disclosed. The equalizer bank with interference reduction comprises a front-shelving filter, a plurality of peak filters, a rear-shelving filter and a plurality of compensators. The center frequency and the quality factor...
11/01/2007
20070223736Adaptive speaker equalization
A device may include logic configured to detect information about a condition of a speaker in a communications device. The logic may process the information, load equalization logic based on the processed information, and may apply the equalization logic to an input sig...
09/27/2007
20070172082Low frequency equalization for loudspeaker system
A method of optimizing the low frequency audio response emanating from a pair of low frequency transducers housed within a cabinet. The low frequency transducers are electrically connected to a power amplifier and source of audio content. The resonant frequency (Fs) and...
07/26/2007
20070133823Signal processing apparatus and signal processing method
A signal processing apparatus includes a plurality of equalizer each used for a corresponding frequency band, controller for setting a gain value in each of the plurality of equalizer, and signal processor for processing an input signal by means of the plurality of equa...
06/14/2007
20070127739Method of setting equalizer for audio file and method of reproducing audio file
A method of setting an equalizer so as to enlarge a sound field in reproducing an audio file and a method of reproducing an audio file thereby, includes: dividing an input audio file into segments with a predetermined time length; extracting an audio feature value for e...
06/07/2007
20070110256AUDIO EQUALIZER HEADSET
A headset, the headset including a communications module for receiving one or more electronic signals from an audio source, the one or more electronic signals representing an audio stream having a first element at a first audible frequency and a second element at a seco...
05/17/2007
20070098187Method and apparatus for reproducing music file
Disclosed is a method for reproducing a music file in a terminal equipped to reproduce the music file, the method including determining equalizing reproduction characteristics of the music file when reproduction of the music file is requested, determining and setting an...
05/03/2007
20070098188Equalization setting determination for audio devices
A method for reducing distortion caused by clipping of lower frequency audio signals begins by monitoring a volume setting of an audio signal with respect to a range of volume settings to produce a monitored volume setting. The method continues by establishing an equali...
05/03/2007
20070092085Signal processing device and sound image orientation apparatus
A signal processing device includes a filter that is set to frequency characteristics in which a dip existing in an intermediate and high frequency range is smoothed in the frequency characteristics of a virtual characteristic applying filter for applying transfer chara...
04/26/2007
20070019826Reduced latency low frequency equalization system
A frequency equalization system is provided that substantially equalizes the room frequency responses generated by at least one loudspeaker within a listening area so that the frequency responses in the listening area are substantially constant and flat within a desired...
01/25/2007
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