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1. WO1997015914 - CONTROL STRUCTURE FOR SOUND SYNTHESIS

Publication Number WO/1997/015914
Publication Date 01.05.1997
International Application No. PCT/US1996/016868
International Filing Date 22.10.1996
Chapter 2 Demand Filed 22.05.1997
IPC
G10H 7/10 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
HELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
7Instruments in which the tones are synthesised from a data store, e.g. computer organs
08by calculating functions or polynomial approximations to evaluate amplitudes at successive sample points of a tone waveform
10using coefficients or parameters stored in a memory, e.g. Fourier coefficients
CPC
G10H 2230/221
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
HELECTROPHONIC MUSICAL INSTRUMENTS
2230General physical, ergonomic or hardware implementation of electrophonic musical tools or instruments, e.g. shape or architecture
045Special instrument [spint], i.e. mimicking the ergonomy, shape, sound or other characteristic of a specific acoustic musical instrument category
155Spint wind instrument, i.e. mimicking musical wind instrument features; Electrophonic aspects of acoustic wind instruments; MIDI-like control therefor.
205Spint reed, i.e. mimicking or emulating reed instruments, sensors or interfaces therefor
221Spint saxophone, i.e. mimicking conical bore musical instruments with single reed mouthpiece, e.g. saxophones, electrophonic emulation or interfacing aspects therefor
G10H 2230/351
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
HELECTROPHONIC MUSICAL INSTRUMENTS
2230General physical, ergonomic or hardware implementation of electrophonic musical tools or instruments, e.g. shape or architecture
045Special instrument [spint], i.e. mimicking the ergonomy, shape, sound or other characteristic of a specific acoustic musical instrument category
251Spint percussion, i.e. mimicking percussion instruments; Electrophonic musical instruments with percussion instrument features; Electrophonic aspects of acoustic percussion instruments, MIDI-like control therefor
351Spint bell, i.e. mimicking bells, e.g. cow-bells
G10H 2250/151
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
HELECTROPHONIC MUSICAL INSTRUMENTS
2250Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
131Mathematical functions for musical analysis, processing, synthesis or composition
151Fuzzy logic
G10H 2250/235
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
HELECTROPHONIC MUSICAL INSTRUMENTS
2250Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
131Mathematical functions for musical analysis, processing, synthesis or composition
215Transforms, i.e. mathematical transforms into domains appropriate for musical signal processing, coding or compression
235Fourier transform; Discrete Fourier Transform [DFT]; Fast Fourier Transform [FFT]
G10H 2250/311
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
HELECTROPHONIC MUSICAL INSTRUMENTS
2250Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
311Neural networks for electrophonic musical instruments or musical processing, e.g. for musical recognition or control, automatic composition or improvisation
G10H 2250/625
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
HELECTROPHONIC MUSICAL INSTRUMENTS
2250Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
541Details of musical waveform synthesis, i.e. audio waveshape processing from individual wavetable samples, independently of their origin or of the sound they represent
621Waveform interpolation
625Interwave interpolation, i.e. interpolating between two different waveforms, e.g. timbre or pitch or giving one waveform the shape of another while preserving its frequency or vice versa
Applicants
  • THE REGENTS OF THE UNIVERSITY OF CALIFORNIA [US]/[US] (AllExceptUS)
  • WESSEL, David [US]/[US] (UsOnly)
  • LEE, Michael [US]/[US] (UsOnly)
Inventors
  • WESSEL, David
  • LEE, Michael
Agents
  • SWISS, Gerald, F.
Priority Data
08/551,89023.10.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CONTROL STRUCTURE FOR SOUND SYNTHESIS
(FR) STRUCTURE DE CONTROLE DESTINEE A LA SYNTHESE DES SONS
Abstract
(EN)
An improved control structure for music synthesis is provided in which: 1) the sound generation provided to the adaptive function mapper (501) allows for a greatly increased degree of control over the sound produced; and 2) training of the adaptive function mapper (501) is performed using an error measure, or error norm, that greatly facilitates learning while ensuring perceptual identity of the produced sound with the training example. In one embodiment, sound data is produced by applying to an adaptive function mapper (501) control parameters including: at least one parameter selected from the set of time and timbre space coordinates; and one parameter from the set of pitch, delta pitch, articulation and dynamic. Mapping is performed from the control parameters to synthesis parameters to be applied to a sound synthesizer. In another embodiment, an adaptive function mapper (501) is trained to produce, in accordance with the information stored in a mapping store (503), synthesis parameters to be applied to a sound synthesizer, by steps including: analyzing sounds to produce sound parameters describing the sounds; further analyzing the sound parameters to produce control parameters; applying the control parameters to the adaptive function mapper (501), the adaptive function mapper (501) in response producing trial synthesis parameters comparable to the sound parameters; deriving from the sound parameters and the trail synthesis parameters an error measure in accordance with a perceptual error norm in which they are weighted in approximate degree to which they are perceived by the human ear; and adapting the information in the mapping store (503) with the error measure.
(FR)
Structure de contrôle améliorée servant à effectuer la synthèse musicale dans laquelle: 1) la production des sons fournie au mappeur de fonctions adaptatif (501) permet d'améliorer très fortement le niveau de contrôle sur le son produit, et 2) la formation du mappeur de fonctions adaptatif (501) est effectuée à l'aide d'une mesure de l'erreur, ou norme d'erreur, qui facilite grandement l'apprentissage tout en assurant l'identité perceptuelle du son produit avec l'exemple de formation. Dans un mode de réalisation de l'invention, on produit les données de son en appliquant à un mappeur de fonctions adaptatif (501) des paramètres de contrôle comprenant: au moins un paramètre sélectionné entre les coordonnées de temps et de timbre du son; et un paramètre sélectionné dans l'ensemble formé par la hauteur, la hauteur delta, l'articulation et la dynamique du son. On effectue le mappage à partir des paramètres de contrôle pour les paramètres de synthèse musicale devant être appliqués à un synthétiseur de sons. Dans un autre mode de réalisation de l'invention, on forme un mappeur de fonctions adaptatif (501) pour qu'il produise, en accord avec des informations stockées dans une mémoire de mappage (503), des paramètres de synthèse musicale qui seront appliqués à un synthétiseur de sons, et ceci à l'aide d'étapes telles que l'analyse des sons en vue de produire des paramètres des sons qui décrivent ces mêmes sons; l'analyse des paramètres des sons en vue de produire des paramètres de contrôle; l'application des paramètres de contrôle au mappeur de fonctions adaptatif (501) qui lui-même produit en retour des paramètres d'essai de synthèse musicale comparables aux paramètres des sons; l'évaluation à partir des paramètres des sons et des paramètres d'essai de synthèse musicale d'une mesure de l'erreur correspondant à une norme d'erreur perceptuelle dans laquelle elles sont pondérées à un niveau approximatif par rapport à ce que l'oreille humaine perçoit; et l'adaptation des informations stockées dans la mémoire de mappage (503) avec la mesure de l'erreur.
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