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7894609 Stereo signal processing apparatus  
Disclosed is a stereo signal processing apparatus, in particular for a digital BTSC television decoder, comprising a sub-channel signal processing section which comprises an input for inputting an...
7889871 Apparatus for multichannel sound reproduction system  
The sound reproduction of a multichannel sound reproduction system with a plurality of speakers which is connected to the output of an FM stereo receiver is controlled by a control signal derived...
7889870 Method and apparatus to simulate 2-channel virtualized sound for multi-channel sound  
A stereo sound generation method and apparatus to generate a stereo sound, by using 2-channel headphones, earphones, or speakers, from a multi-channel sound signal reproduced through a variety of...
7881817 Method and apparatus for processing an audio signal  
A method for processing an audio signal, comprising the steps of extracting an ancillary signal for generating the audio signal and an extension signal included in the ancillary signal from a...
7862418 Voucher gaming systems and methods  
A gaming system and related methods comprising a gaming device and a voucher mechanism in communication with the gaming device. The voucher mechanism is configured to present various types of...
7856106 System and method for determining a representation of an acoustic field  
This system for determining a representation of an acoustic field (P) includes: acoustic wave acquisition elements (1) including a plurality of elemental sensors (21 to 2Q) which are distributed...
7853021 Decoding apparatus and decoding method for multiple audio standards  
The invention discloses a decoding apparatus for decoding an analog audio signal. The decoding apparatus includes an RF tuner, an analog to digital (A/D) converter, a digital down converter, and a...
7840014 Sound apparatus with howling prevention function  
An acoustic system that eliminates the howling that occurs when the sound outputted by the speaker feeds back to the input device. The acoustic system comprises a digital signal processor (DSP)...
7835535 Virtualizer with cross-talk cancellation and reverb  
Audio loudspeaker and headphone virtualizers and cross-talk cancellers and methods use separate virtual speaker locations for different Bark frequency bands and a single reverberation filter for...
7826626 Cross-over frequency selection and optimization of response around cross-over  
A system and method provide at least a single stage optimization process which maximizes the flatness of the net subwoofer and satellite speaker response in and around a cross-over region. A first...
7817812 Compact audio reproduction system with large perceived acoustic size and image  
A compact audio reproduction system for two input signals includes at least four loudspeakers disposed at the vertices of a quadrilateral not more than two feet on any side and such that no two...
7813513 Multi-channel encoder  
There is described a method of encoding input signals (CHI to CH3; 400 to 450) in a multi-channel encoder (5; 15) to generate corresponding output data comprising down-mix output signals (610,...
7801317 Apparatus and method of reproducing wide stereo sound  
An apparatus and a method of reproducing a wide stereo sound by widening a stereo sound output by an audio reproducing apparatus using only two closely disposed channel speakers include a widening...
7801312 Audio signal processing circuit  
An audio signal processing circuit for an audio reproduction apparatus at least having sound source located substantially at left and right sides to a listener, is provided. The audio signal...
7796764 Method and device for reproducing a binaural output signal generated from a monaural input signal  
The invention relates to a method and a device for reproducing a binaural output signal generated from a monaural input signal and comprising a first output signal and a second output signal via...
7792674 System and method for providing virtual spatial sound with an audio visual player  
A method and machine-readable medium for providing virtual spatial sound with an audio visual player are disclosed. Input audio is processed into output audio having spatial attributes associated...
7783064 Hearing aid system  
In the case of binaural coverage, the perception with one-sided sound reception should be improved. Provision is made for this purpose to transmit the receive signals of the hearing devices...
7778427 Phase compensation techniques to adjust for speaker deficiencies  
In an embodiment, a phase compensation system shifts the phase of an audio signal in a mid-range frequency band to compensate for phase distortion created when an electrical audio signal is...
7764805 Apparatus for generating surround signal from two-channel stereo signal  
To restrict a loss, or a variation in a loudness, of the sound of a rear speaker if the separation of a two-channel stereo signal degrades in a surround device which generates a four-channel...
7702111 Audio stereo processing method, device and system  
The present invention relates to a method and a device for processing and reproducing an audio stereo signal. The method produces a left output signal for transmission to a left loudspeaker in a...
7676043 Audio bandwidth expansion  
Bandwidth expansion for audio signals by frequency band translations plus adaptive gains to create higher frequencies; use of a common channel for both stereo channels limits computational...
7664270 3D audio signal processing system using rigid sphere and method thereof  
Provided are a three-dimensional audio signal processing system using a rigid sphere and a method thereof. The three-dimensional audio signal processing system of the present research simplifies...
7664272 Sound image control device and design tool therefor  
A sound image control device filters transfer functions H3 and H1 indicating transfer characteristics of a sound from an acoustic transducer (8) to entrances to respective ear canals (1) and (2)...
7664271 Method and apparatus for processing sound signal  
A method for processing sound signal including an L side enhanced difference signal comprising a sum of a signal being removed low frequency component from L−R signal and an L+R signal, an R side...
7650000 Audio device and playback program for the same  
The input signal X of one channel is divided by a multi-stage delay processing device Z−1 and each of the outputs is superimposed by a specified coefficient by a coefficient processing device W0,...
7636443 Audio enhancement system  
A stereo enhancement system processes the difference signal component generated from a pair of left and right input signals to create a broadened stereo image reproduced through a pair of speakers...
7634093 Head related transfer functions for panned stereo audio content  
A method to process audio signals, an apparatus accepting audio signals, a carrier medium that carried instructions for a processor to implement the method to process audio signals, and a carrier...
7623669 Simplified amplifier providing sharing of music with enhanced spatial presence through multiple headphone jacks  
A personal listening device used in connection with the amplification of signals for enhancing the perceived quality and ambiance of sound heard by listener using stereo headphones or small...
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...
7606372 Device and method for determining a reproduction position  
A method and device are provided for determining a reproduction position of a source of sound for audio-visual reproduction of a film scene from a plurality of individual pictures with regard to a...
7583805 Late reverberation-based synthesis of auditory scenes  
A scheme for stereo and multi-channel synthesis of inter-channel correlation (ICC) (normalized cross-correlation) cues for parametric stereo and multi-channel coding. The scheme synthesizes ICC...
7564982 Two channel audio surround sound circuit  
A two channel surround sound audio circuit (surround sound circuit) includes a first amplifier, a second amplifier, two polarized input capacitors, and two polarized output capacitors. A first...
7558393 System and method for compatible 2D/3D (full sphere with height) surround sound reproduction  
A system and method of producing an output sound field that is representative of an input sound field compatible with both existing prior art sound reproduction systems, for example ITU 5.1/6.1,...
7551741 System and method for 3D sound processing  
A system for 3D sound processing. The system includes a first processing section including a first left lattice filter and a first right lattice filter, respectively electrically connected to a...
7522733 Systems and methods of spatial image enhancement of a sound source  
Reproduction of stereophonic audio information over a single speaker requires summing multiple stereo channels. When signals having approximately equal magnitudes and approximately opposite phases...
7515935 Method and system for flexible FM tuning  
A method and system for flexible FM tuning are provided and may include tuning to a particular frequency within a range of FM channels based on an IF frequency that includes an integer multiple of...
7512246 Stereo sounding method, stereo sounding system, and musical tone generation control system  
A stereo sounding method which can provide realistic sounds such as stereo sounds for a large number of listeners while reducing the number of speakers. A stereo sounding system is comprised of a...
7502477 Audio reproducing apparatus  
A distributing circuit distributes audio signals of a predetermined number of channels to audio signals of a predetermined number of channels. A first signal processing circuit processes audio...
7492907 Multi-channel audio enhancement system for use in recording and playback and methods for providing same  
An audio enhancement system and method for use receives a group of multi-channel audio signals and provides a simulated surround sound environment through playback of only two output signals. The...
7466831 Audio processing  
The present invention relates to audio signal processing such as equalisation and spatial enhancement functions. The present invention provides an audio signal processing circuit arrangement for...
7460676 Headphone driving circuit  
This invention may provide a headphone driving circuit needless of coupling condenser even if the power supply supplies a single output voltage. The headphone driving circuit comprises (1) a first...
7460673 Point source speaker system  
The system of the present invention includes, briefly, a point source speaker system, comprising a processor which produces a left minus right (L−R) audio signal, a right plus left (R+L) and a...
7443987 Discrete surround audio system for home and automotive listening  
A sound processing system increases the robustness of surround sound in various playback situations. The system may process an incoming signal, such as a five channel surround sound signal, with a...
7440575 Equalization of the output in a stereo widening network  
The invention relates to a method, signal processing device and computer program for stereo widening (SW) of stereo format signals to become suitable for headphone listening. The invention also...
7428308 Transmitting and reproducing stereophonic audio signals  
Apparatus and method for transmitting and reproducing stereophonic audio signals are disclosed. The method comprises splitting first and second channels into two frequency bands, combining the...
7412380 Ambience extraction and modification for enhancement and upmix of audio signals  
Modifying an audio signal comprising a plurality of channel signals is disclosed. At least selected ones of the channel signals are transformed into a time-frequency domain. The at least selected...
7412220 Signal processing  
Signal processing apparatus produces an audio signal suitable for conveying a psychoacoustic perception of a low frequency audio signal to a listener, the apparatus generates harmonics of the low...
7391877 Spatial processor for enhanced performance in multi-talker speech displays  
Optimal head related transfer function spatial configurations designed to maximize speech intelligibility in multi-talker speech displays by spatially separating competing speech channels combined...
7388959 Harmonic generator and pre-amp  
A Harmonic Generator for audio applications and a Pre-Amplifier circuit are combined to form a Harmonic Generator and Pre-Amplifier circuit. The Harmonic Generator is formed from a Buffer Circuit...
7382885 Multi-channel audio reproduction apparatus and method for loudspeaker sound reproduction using position adjustable virtual sound images  
A multi-channel audio reproduction apparatus and method for loudspeaker reproduction using virtual sound images whose positions can be adjusted is provided. The multi-channel audio reproduction...