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Class Information
Number: 84/661
Name: Music > Instruments > Electrical musical tone generation > Digital combinational circuit > Tone synthesis or timbre control > Filtering
Description: Subject matter wherein a desired waveform is obtained by removing one or more partials or harmonics.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8653354 Audio synthesizing systems and methods Feb. 18, 2014
8473286 Noise feedback coding system and method for providing generalized noise shaping within a simple filter structure Jun. 25, 2013
8204257 System and method for increasing ring tone volume Jun. 19, 2012
8178772 Resonance sound adding apparatus for keyboard instrument May. 15, 2012
8170879 Periodic signal enhancement system May. 1, 2012
8067684 Filter device and electronic musical instrument using the filter device Nov. 29, 2011
8030565 Signal processing for twang and resonance Oct. 4, 2011
7999170 Acoustic drum set amplifier device specifically calibrated for each instrument within a drum set Aug. 16, 2011
7960640 Derivation of control signals from real-time overtone measurements Jun. 14, 2011
7777120 Electromagnetic musical instrument frequency conversion systems and related methods Aug. 17, 2010
7777118 Electromagnetic musical instrument systems and related methods Aug. 17, 2010
7777119 Electromagnetic musical instruments Aug. 17, 2010
7767899 Electronic musical instrument Aug. 3, 2010
7750229 Sound synthesis by combining a slowly varying underlying spectrum, pitch and loudness with quicker varying spectral, pitch and loudness fluctuations Jul. 6, 2010
7642445 Music sound generator Jan. 5, 2010
7622665 Filter device and electronic musical instrument using the filter device Nov. 24, 2009
7613612 Voice synthesizer of multi sounds Nov. 3, 2009
7534953 Method for simulation and digital synthesis of an oscillating phenomenon May. 19, 2009
7482530 Signal processing apparatus and method, recording medium and program Jan. 27, 2009
7092463 Method and apparatus for interference rejection Aug. 15, 2006
7062337 Artificial ambiance processing system Jun. 13, 2006
6972364 User interface and a synthesizer with a user interface Dec. 6, 2005
6881892 Method of configurating acoustic correction filter for stringed instrument Apr. 19, 2005
6849795 Controllable frequency-reducing cross-product chain Feb. 1, 2005
6548749 Electronic musical instrument and tone volume control method Apr. 15, 2003
6525255 Sound signal analyzing device Feb. 25, 2003
RE38003 Filtering apparatus for an electronic musical instrument Feb. 25, 2003
6448488 Measurement and processing of stringed acoustic instrument signals Sep. 10, 2002
6410838 Musical sound signal synthesizer and method for synthesizing musical sound signals using nonlinear transformer Jun. 25, 2002
6350943 Electric instrument amplifier Feb. 26, 2002
RE37422 Electronic musical instrument Oct. 30, 2001
6300553 Pitch shifter Oct. 9, 2001
6284965 Physical model musical tone synthesis system employing truncated recursive filters Sep. 4, 2001
6259014 Additive musical signal analysis and synthesis based on global waveform fitting Jul. 10, 2001
6218604 Tone generator with diversification of waveform using variable addressing Apr. 17, 2001
6175073 Tone synthesizing device and method based on physical model tone generator Jan. 16, 2001
6111183 Audio signal synthesis system based on probabilistic estimation of time-varying spectra Aug. 29, 2000
6111181 Synthesis of percussion musical instrument sounds Aug. 29, 2000
6101469 Formant shift-compensated sound synthesizer and method of operation thereof Aug. 8, 2000
6040516 Tone generation system using computer software and storage medium storing the computer software Mar. 21, 2000
5998726 Musical sound generating system with controlled tone Dec. 7, 1999
5945621 Musical tone control apparatus with envelope processing Aug. 31, 1999
5942708 Tone generator with diversification of waveform using variable addressing Aug. 24, 1999
5911170 Synthesis of acoustic waveforms based on parametric modeling Jun. 8, 1999
5900570 Method and apparatus for synthesizing musical sounds by frequency modulation using a filter May. 4, 1999
5886276 System and method for multiresolution scalable audio signal encoding Mar. 23, 1999
5814750 Method for varying the pitch of a musical tone produced through playback of a stored waveform Sep. 29, 1998
5787023 Digital filter device for electronic musical instruments Jul. 28, 1998
5777255 Efficient synthesis of musical tones having nonlinear excitations Jul. 7, 1998
5748513 Method for inharmonic tone generation using a coupled mode digital filter May. 5, 1998

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