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| Number | Title | Issue Date |
| 7638703 | Method and system of audio synthesis capable of reducing CPU load A method and system of audio synthesis capable of reducing CPU load is disclosed, which establishes a parameter look-up table in a read-only memory (ROM). When a computer system synthesizes audio signals, the required coefficients are obtained from the table, which ... | 12/29/2009 |
| 7495166 | Sound processing apparatus, sound processing method, sound processing program and recording medium which records sound processing program A sound-processing apparatus is provided that is capable of creating a sound effect without having to worry about changes in parameters such as the beat of the input sound source. The sound-processing apparatus comprises: a delay unit DB that generates at least one ... | 02/24/2009 |
| 7330769 | Parameterized interactive control of multiple wave table sound generation for video games and other applications In the context of a video game, multimedia presentation or other application, multiple sound sample files are read out simultaneously and mixed together. The volumes and/or pitches of the wave tables are parameterized to allow a single parameter (e.g., power, intens... | 02/12/2008 |
| 7324030 | Multiple stage delta sigma modulators A delta sigma modulator which employs a plurality of accumulators with non-power-of-2 modulus. The accumulators may consist of a primary non-power-of-2 modulus accumulator and a secondary non-power-of-2 modulus accumulator. The number of bits in the primary accumula... | 01/29/2008 |
| 7287210 | Convolutional encoder and method of operation Convolutionally encoding a data stream includes inputting a first block of two or more bits in parallel into a shift register. A number of intermediate calculations are performed in parallel using a number of respective delayed shift register outputs; and said numbe... | 10/23/2007 |
| 7285712 | Method of dynamically determining a maximum polyphony number according to operation mode and smoothly changing polyphony number when switching operation modes A method of dynamically determining a maximum polyphony number is used in an electronic device, which has S tone generators. First, an operation mode of the electronic device is detected. Next, a residual computing power of the electronic device is obtained accordin... | 10/23/2007 |
| 7276655 | Music synthesis system The invention relates to a music synthesis system for synthesizing a corresponding digital music output according to commands from a music data file. The music data file comprises a plurality of music data units. Each music data unit records related information of t... | 10/02/2007 |
| RE39811 | Musical information recording and reproducing technique for use with a recording medium having a UTOC area There is generated a rhythm corresponding to a designated tempo and meter of a music piece to be recorded. Performance of a musical instrument is started at specific timing according to the generated rhythm, and the musical information resulting from the performance... | 09/04/2007 |
| 7188190 | Packet data processing apparatus and packet relay apparatus In a packet data processing apparatus for processing a packet received from a network by a processor, a packet data access part includes a plurality of registers arranged in series and sequentially shifts the received packet through the plurality of registers toward... | 03/06/2007 |
| 7149316 | Microcontroller having an on-chip high gain amplifier A microcontroller includes a wide band, high gain amplifier on-chip capable of driving a 32 ohm speaker. The amplifier is controllable by the microcontroller processor to either enable or disable the amplifier and switch between multiple modes of power. In one embod... | 12/12/2006 |
| 7120817 | Method of signal distribution based on a standing wave within a closed loop path A closed-loop based timing signal distribution architecture includes at least one signal source coupled to a signal path disposed in a closed loop arrangement to facilitate generation of a standing wave signal within the signal path. In one embodiment, at least one ... | 10/10/2006 |
| 7088835 | Wavetable audio synthesizer with left offset, right offset and effects volume control A digital wavetable audio synthesizer is described. A synthesizer volume generator, which has several modes of controlling the volume, adds envelope, right offset, left offset, and effects volume to the data. The data can be placed in one of sixteen fixed stereo pan... | 08/08/2006 |
| 6975977 | Low-complexity, high accuracy model of a CPU anti-resonance system A low-complexity, high accuracy model of a CPU anti-resonance system has been developed. The model includes a simulated load model, a simulated transistor that simulates the performance of a high frequency capacitor, and a simulated capacitor that simulates the perf... | 12/13/2005 |
| 6945784 | Generating a musical part from an electronic music file Generating a pitched musical part from an electronic music file comprised of instrumental parts includes generating a control stream that indicates which of the instrumental parts has a highest value for a period of time, selecting one of the instrumental parts for ... | 09/20/2005 |
| 6910035 | System and methods for providing automatic classification of media entities according to consonance properties In connection with a classification system for classifying media entities that merges perceptual classification techniques and digital signal processing classification techniques for improved classification of media entities, a system and methods are provided for au... | 06/21/2005 |
| 6426456 | Method and apparatus for generating percussive sounds in embedded devices A percussive sound contains both harmonic and non-harmonic frequency spectral content. To reproduce a particular percussive sound, such as the sound of a drum or cymbal or hand clap, for example, the harmonic and non-harmonic content are determined empiri... | 07/30/2002 |
| 6288320 | Electric musical instrument An electric musical instrument is provided, which enables rich and diverse expressions to be achieved in musical performance. A driving member drives a tone generating source. A driving member-side signal generator obtains a signal from the driving member... | 09/11/2001 |
| 6235980 | Apparatus and method for generating waveform data for musical tone signal generating apparatus A synthesized strong hit waveform data is generated by synthesizing a strong hit amplitude component separated from a strong hit waveform data generated based on tone of a strong play and a weak hit phase component separated from a weak hit waveform data ... | 05/22/2001 |
| 6091269 | Method and apparatus for creating different waveforms when synthesizing musical sounds A circuit and method for generating waveforms when synthesizing musical sounds. In one embodiment, the invention provides a multiplexer/shifter which modifies the phase angle input according to the particular waveform desired. Boolean logic gates further ... | 07/18/2000 |
| 6051772 | Method and apparatus for emulating a frequency modulation device A system and method are disclosed for emulating a frequency modulation sound chip with minimal hardware and utilizing the excess capacity of current computer systems. In one embodiment, the frequency modulation emulation apparatus includes a frequency mod... | 04/18/2000 |
| 6011448 | Method and apparatus for frequency modulation synthesis A method for frequency modulation synthesis and apparatus for performing the method. The method uses additions rather than multiplies and therefore saves the space and cost of multipliers in circuit implementations. The method saves further resources by u... | 01/04/2000 |
| 5920843 | Signal parameter track time slice control point, step duration, and staircase delta determination, for synthesizing audio by plural functional components The present invention provides a system and a method for tracking parameters of a synthesized an! audio signal that reduces the amount of processing time without causing any discernible degradation in the sound quality of the audio signal. An audio sign... | 07/06/1999 |
| 5869781 | Tone signal generator having a sound effect function A tone signal generator includes a tone signal data generating device, a signal data generating device, and a sound effects imparting device, such as a digital signal processor. The sound effects are imparted to the tone signal data based on the signal da... | 02/09/1999 |
| 5861568 | Generation of wave functions by storage of parameters for piecewise linear approximations An improved method for generating various wave functions for use in musical tone generation in FM synthesis so as to substantially reduce computational and storage requirements. The waveform desired to be used is mathematically modeled using piecewise lin... | 01/19/1999 |
| 5848165 | Fat sound creation means Intermodulation means for the emulation and exaggeration of an aspect of vacuum tube amplifiers by solid state, digital, speaker or other means. The intermodulation means produces intermodulation products of the input and an audio signal source which may ... | 12/08/1998 |
| 5808221 | Software-based and hardware-based hybrid synthesizer An audio synthesizer is disclosed for generating an analog or digital audio output in response to coded control instructions representing musical events, such as a MIDI data stream. The synthesizer has a general purpose computer portion with a CPU program... | 09/15/1998 |
| 5740716 | System and method for sound synthesis using a length-modulated digital delay line A sound synthesis system employs a variable-length delay line whose length is modulated at a frequency that is close to the fundamental frequency of the delay line. By modulating the length of the delay line at a frequency close to the fundamental frequen... | 04/21/1998 |
| 5719345 | Frequency modulation system and method for audio synthesis An audio synthesis circuit is disclosed that incorporates a phase accumulator, adder, sinusoid computing circuit, feedback controller, modulation controller and output accumulator. The audio synthesis circuit generates harmonically complex audio tones, wh... | 02/17/1998 |
| 5698805 | Tone signal generator for producing multioperator tone signals The present invention relates to a tone signal generator. The tone signal generator includes first tone signal generation means for producing a dual-tone, multi-frequency ("DTMF") audio signal; second tone signal means for producing a plurality of non-DTM... | 12/16/1997 |
| 5684260 | Apparatus and method for generation and synthesis of audio The method of the present invention preferably receives a predetermined number of input values or data from which it may be determined which one of a predetermined number of modulator waveforms is selected and which one of a predetermined number of carrie... | 11/04/1997 |
| 5677504 | Tone signal generator A tone signal generator includes a plurality of tone generation channels, and a tone generation control data memory for storing instruction data for instructing tone generation or tone release and execution data for instructing execution thereof, for each... | 10/14/1997 |
| 5665929 | Tone signal generator for producing multioperator tone signals using an operator circuit including a waveform generator, a selector and an enveloper A frequency modulation (FM) tone signal generator for generating a FM tone signal is disclosed. The tone signal generator includes a waveform generator having a plurality of wave tables, a selector and an enveloper. The waveform generator furnishes a wave... | 09/09/1997 |
| 5644098 | Tone signal generator for producing multioperator tone signals A frequency modulation (FM) tone signal generator for generating a FM tone signal is disclosed. The tone signal generator includes a waveform generator having a plurality of wave tables, a selector and an enveloper. The waveform generator furnishes a wave... | 07/01/1997 |
| 5610354 | Musical tone signal synthesizer A musical tone signal synthesizer wherein a first waveform signal of a frequency defined by first frequency information is produced as a modulation signal, a second waveform signal indicative of a windowing function is produced at a cycle defined by secon... | 03/11/1997 |
| 5604323 | Musical tone electronic synthesizer and method A tone generator (501) for a musical synthesizer has digital waveform generators (602,603) arranged such that a proportion of an output from a waveform generator (602) is supplied to a phase modulating input of a next waveform generator (603), wherein a p... | 02/18/1997 |
| 5602811 | Musical information recording and reproducing technique for use with a recording medium having a UTOC area There is generated a rhythm corresponding to a designated tempo and meter of a music piece to be recorded. Performance of a musical instrument is started at specific timing according to the generated rhythm, and the musical information resulting from the ... | 02/11/1997 |
| 5559300 | Delay time modulation effecting apparatus for processing musical tone signal A delay-time-modulation effecting apparatus employed by an electronic musical instrument or the like, is designed to effect a certain delay-time modulation on a musical tone signal so as to realize a desired modulation effect appear on a musical tone to b... | 09/24/1996 |
| 5521325 | Device for synthesizing a musical tone employing random modulation of a wave form signal An apparatus for synthesizing a musical tone comprises a loop circuit for circulating an input wave form signal through a delay circuit, a wave form memory, and a random modulation circuit for modulating the wave form signal stored in the wave form memory... | 05/28/1996 |
| 5464947 | Apparatus for and method of producing fluctuations in sound for electronic sound system According to the invention, a plurality of pieces of frequency modulation information are weighted independently and then synthesized. The individual pieces of synthesized frequency modulation information are weighted independently, and individual pieces ... | 11/07/1995 |
| 5432294 | Electronic bell tone generator A microprocessor provides a pulse width modulated pulse train at a predetermined frequency to a tuned resonant circuit having a transducer element. The first pulse has a predetermined width. The pulse widths of successive pulses are decreased in a predete... | 07/11/1995 |
