Class 84/630 - Reverberation

Subclass of Class 84 - Music
Definition: Subject matter for providing time delays that simulate a
No. of patents: 131
Last issue date: 11/03/2009

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Number	Title	Issue Date
7612281	Reverberation effect adding device A reverberation effect adding device comprising a first convolution circuit which in turn comprises FIR filters (80-1 to 80-4) and an adder (accumulator) (81) which adds outputs from the FIR filters, a moving average circuit (82...	11/03/2009
7403625	Signal processing unit The invention relates to a signal processing unit including an input for receiving an audio signal, and an early pattern generator connected to the input, for defining a predefined early pattern generation. The early pattern generator establishes an output having N ...	07/22/2008
7400734	Method and apparatus for emulating audio effect The present invention provides an apparatus and a method for emulating audio. The apparatus comprises an echo device, a reverberation device, an audio source device and a first signal synthesizer. Wherein, the echo device receives an audio source signals and applies...	07/15/2008
7369665	Method and apparatus for mixing sound signals A system and method for mixing sound signals is provided in which a mixer buffer stores sample values for three or more sound channels, each sound channel including a main sound component and one or more auxiliary sound components. Send paths are provided for sendin...	05/06/2008
7369663	Method of creating reverberation by estimation of impulse response The present invention is directed to creating sound reverberation. In accordance with a preferred embodiment, an apparatus estimates an impulse response for use in reproduction of a sound in a desired acoustic space. In particular, the apparatus collects space infor...	05/06/2008
7259316	Effect system An effect system stored a specified segment of an audio signal and repeats the segment during a specified interval. The segment length may be defined in advance as a musical time interval and the interval in which it is repeated may be defined in advance as a musica...	08/21/2007
7233673	In-line early reflection enhancement system for enhancing acoustics An in-line early enhancement generation system comprises one or more microphones positioned close to one or more sound sources so as to detect predominantly direct sound, an early reflection generation stage which generates a number of delayed reproductions of the m...	06/19/2007
7217879	Reverberation sound generating apparatus A reverberation apparatus is designed for generating a reverberation sound from an input sound with use of an impulse response based on an instruction. In the reverberation apparatus, a first storage section stores first impulse response data representative of a fir...	05/15/2007
7197151	Method of improving 3D sound reproduction A method of improving 3D sound reproduction is described, in which virtual sound sources to be positioned behind a listener 10 are filtered using an HF-cut filter in order to remove distracting high-frequency components caused by incomplete transaural crossta...	03/27/2007
7149314	Reverberation processor based on absorbent all-pass filters A reverberation processor includes a chain of absorbent all-pass filters and an absorbent delay line. The decay time can be precisely controlled by controlling the magnitude of the attenuation in the absorbent delay lines. Further, each absorbent delay line includes...	12/12/2006
7095860	Audio dynamic control effects synthesizer with or without analyzer A method and apparatus for applying a gain characteristic to an audio signal are provided. Data storing a plurality of gain characteristics at a plurality of different levels is stored in a storage means. The amplitude of an input signal is repeatedly assessed and f...	08/22/2006
RE39189	Reverberators for use in wide band assisted reverberation systems A multi-channel reverberation system has a substantially constant multi-channel power gain at audio frequencies and comprises multiple signal inputs, one for each input channel, a number of comb filter networks connected to each signal input, each comb filter networ...	07/18/2006
7062337	Artificial ambiance processing system An apparatus and method simulates more accurately the natural statistics of a physical reverberation process. A new filter design is provided having a comb shaped group delay. Gain minimums at a plurality of frequencies are combined with a delay line to create a con...	06/13/2006
7050573	Method of generating ring tones using melody and communication terminal apparatus In a communication terminal apparatus such as a portable telephone, it is made possible to sound ring tones of good tone quality simply by using arbitrary music or the like. In a communication terminal that conducts radio communication with a predetermined station a...	05/23/2006
7039194	Audio effects synthesizer with or without analyzer The method is provided for simulating an audio effect processor. At least two impulse responses are stored representing the audio processor for input signals having different characteristics. The same characteristic of the input signal is then repeatedly assessed an...	05/02/2006
7005570	Tone generating apparatus, tone generating method, and program for implementing the method There is provided a tone generating apparatus and method that enables recording and reproduction of performance made by a performer without requiring any complicated operations. Musical tones generated from a musical instrument are detected, and tone data is stored ...	02/28/2006
6978027	Reverberation processor for interactive audio applications An improved reverberation processor includes a technique for changing environmental parameters without causing disturbing audio artifacts. The technique includes the steps of sequentially changing the read pointers of different delay lines. Additionally, for each de...	12/20/2005
6909041	Sound field control method and sound field control system Reverberation characteristics of an original sound field and a reproduction sound field are measured and a difference between the reverberation characteristics is obtained. A reflected sound pattern added to reproduction sound is calculated so that the reverberation...	06/21/2005
6754352	Sound field production apparatus A sound-field production apparatus includes a direct-sound-generating unit for generating a direct sound from a sound signal supplied to the direct-sound-generating unit and a reflected-sound-generating unit for generating a sound serving as a substitute for a sound...	06/22/2004
6751322	Acoustic modeling system and method using pre-computed data structures for beam tracing and path generation A system and method for acoustic modeling partitions an input 3D spatial model into convex cells, and constructs a cell adjacency data structure representing the neighbor relationships between adjacent cells. For each sound source located in the spatial environment,...	06/15/2004
6723910	Reverberation generation processor A reverberation generation processor. The reverberation generation processor generates a specific auditory signal according to a predetermined virtual environment having characteristics of spatial dimension, sound reflection, and decline. The natural sequence genera...	04/20/2004
6665409	Methods for surround sound simulation and circuits and systems using the same A method of producing reverberation effects is disclosed. A filter is implemented for modeling early acoustic reflections in response to an input signal using a first processor, the filter includes a delay buffer of a selected length and having a selected...	12/16/2003
6611592	Incoming-call tone generation device A incoming-call tone generation device comprises: a first storage unit 1, for storing an effect calculation formula for incoming-call tone data; a second storage unit, for storing incoming-call tone data that consist of data for original sounds; a control...	08/26/2003
6580796	Sound effect imparting apparatus Reverberation imparting functions as are obtained by a mechanical type reverberation apparatus employing coil spring delaying elements are simulated by an electric circuit configuration. Three delay loop circuits are individually provided, each including ...	06/17/2003
6483922	Method and system for generating a simulated reverberation audio signal A method and apparatus for generating a simulated reverberation characteristic in an input audio signal having a plurality of channels, each channel transmitting time-synchronized data elements. The method and apparatus imparts a unique delay to each elem...	11/19/2002
6180866	Reverberating/resonating apparatus and method A tone to which resonance characteristics have been added to is repetitively delayed so as to reverberate. The delay of the tone is determined based on the resonance characteristics, and a modified tone in which the reverberation and resonance characteris...	01/30/2001
6166315	Device for processing a microphone signal of a karaoke apparatus In accordance with a kind of effect, an effect adding section (38) adds an original microphone signal with an effect signal and outputs the added signal, or outputs an effect signal in place of the original microphone signal. A mixing section (42) mixes t...	12/26/2000
6157724	Apparatus having loudspeakers concurrently producing music sound and reflection sound A music apparatus is constructed for introducing a music sound into an acoustic space, and is equipped with an acoustic feedback system for introducing a reflection sound into the acoustic space. In the music apparatus, an input device sequentially provid...	12/05/2000
6101583	Digital signal processor for delayed signal processing using memory shared with another device In each sampling period, sample data and a count value WA of a ring buffer counter 11 are supplied to a RAM 202 through a bus control circuit 14 as write data and a write address. Each cache block stored in a data buffer DB0 and so on is used f...	08/08/2000
6091824	Reduced-memory early reflection and reverberation simulator and method Early reflection and reverberation processing using a decimating filter simulates the high frequency attenuation of an actual physical and acoustical environment and advantageously reduces the memory storage and computational burden of the early reflectio...	07/18/2000
6047073	Digital wavetable audio synthesizer with delay-based effects processing A digital wavetable audio synthesizer is described. The synthesizer can generate up to 32 high-quality audio digital signals or voices, including delay-based effects, at either a 44.1 KHz sample rate or at sample rates compatible with a prior art wavetabl...	04/04/2000
5999630	Sound image and sound field controlling device On the basis of localization control data, a sound image localization controlling circuit reproduces input audio signals via a plurality of speakers after having applied predetermined delay-involving signal processing to the audio signals, to thereby perf...	12/07/1999
5977470	Electronic musical instrument with independent control of expression and effect An electronic musical instrument has a processing circuit for adding a reverberation tone after volume control using expression data generated upon operation of an expression pedal to generate tone data which does not vary the attenuation characteristics ...	11/02/1999
5939656	Music sound correcting apparatus and music sound correcting method capable of achieving similar audibilities even by speaker/headphone A music sound correcting apparatus for correcting a music sound signal entered thereinto to selectively supply the corrected music sound signal to a speaker and a headphone, is provided with a jack into which a plug of the headphone is inserted, and a det...	08/17/1999
5917917	Reduced-memory reverberation simulator in a sound synthesizer A sound or music synthesizer includes a reverberation simulator having a substantially reduced volatile storage, random access memory, or buffer size in comparison to conventional reverberation simulators by decimating the sound signal prior to applying t...	06/29/1999
5905222	Silent stringed instrument for producing electric sound from virtual sound source same as that of acoustic stringed instrument A silent violin converts vibrations of strings to an electric signal, and the electric signal is supplied to two delay circuits and, thereafter, two multipliers so as to produce a left sound signal and a right sound signal different in delay time and magn...	05/18/1999
5902950	Harmony effect imparting apparatus and a karaoke amplifier In a karaoke vocal adaptor 100, voice signals to which a harmony effect is imparted by the harmony effect imparting circuit, and voice signals to which the harmony effect is not imparted are output from wet voice output terminals 121 and 122, and dry voic...	05/11/1999
5880390	Reverberation effect imparting apparatus In a reverberation effect imparting apparatus, sampled data of an input signal is written into a RAM 23 and the data is read out after an elapse of a predetermined time period, thereby imparting a reverberation effect. A storage area of the RAM 23 is divi...	03/09/1999
5864080	Software sound synthesis system An audio signal processing system including an input circuit for inputting musical instrument digital interface (MIDI) commands in real time over a plurality of channels, a computer including a central processing unit (CPU) supplied with the MIDI commands...	01/26/1999
5835093	Audio equipment and method of displaying operation thereof The present invention is concerned with an audio equipment capable of processing video signals and a method of displaying operation of the acoustic equipment. An input selector switch 1 is supplied with reproduced audio signals from devices connected to a...	11/10/1998

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Class 84/630 - Reverberation