Method of controlling sound source for electronic musical instrument, and electronic musical instrument adopting the method

• US 5,200,568 A
• Filed: 01/30/1991
• Issued: 04/06/1993
• Est. Priority Date: 01/31/1990
• Status: Expired due to Fees

• Current Assignee: Yamaha Corporation
• Original Assignee: Yamaha Corporation
• Inventors: Usa, Satoshi, Okamoto, Tetsuo, Fukushima, Yoshiko
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): Kim, Helen
• Application Number:
  US07/648,156
• Time in Patent Office: 797 Days
• Field of Search: 84/658, 84/660, 84/663, 84/DIG. 10, 84/625, 84/627, 84/630, 84/633, 84/707, 84/741, 84/742, 84/615, 84/622, 84/626, 84/658, 84/659, 84/DIG. 26, 331/78
• US Class Current: 84/658
• CPC Class Codes: G10H 1/055 by switches with variable impedance elements
• CPC Class Codes: G10H 2220/161 with 2D or x/y surface coordinates sensing graphical user interface or touchscreen input G10H2220/091; microtonal keyboard G10H2210/401
• CPC Class Codes: G10H 2250/445 Bowed string instrument sound generation, controlling specific features of said sound, e.g. use of fret or bow control parameters for violin effects synthesis bow interfaces per se G10H2220/365; modulation effects G10H2210/195; spint viola G10H2230/081; spint cello G10H2230/085
• CPC Class Codes: G10H 2250/461 Gensound wind instruments, i.e. generating or synthesising the sound of a wind instrument, controlling specific features of said sound spint wind instruments G10H2230/155; mouth or breath sensors G10H2220/361; natural aerodynamic noise synthesis, e.g. wind G10H2250/431
• CPC Class Codes: G10H 2250/515 Excitation circuits or excitation algorithms therefor
• CPC Class Codes: G10H 2250/521 Closed loop models therefor, e.g. with filter and delay line
• CPC Class Codes: G10H 5/007 Real-time simulation of G10B, G10C, G10D-type instruments using recursive or non-linear techniques, e.g. waveguide networks, recursive algorithms

Abstract

In controlling a sound source for an electronic musical instrument, an operation data of a performance operation member corresponding to musical tone control parameters of a musical instrument is corrected according to a tone generation region characteristic of the musical instrument. The corrected data is inputted to a sound source circuit of the electronic musical instrument thereby a musical tone approximating of the musical instrument is regularly generated. The electronic musical instrument comprises a performance operation member for outputting position and pressure data of an operation member, a sound source for receiving musical tone control parameters corresponding to those of a musical instrument and generating a musical tone simulating that of the musical instrument, and a conversion circuit for converting the position and pressure data to those in a normal tone generation region as the musical tone control parameters in accordance with a tone generation region characteristic based on the musical tone control parameters of the musical instrument. The conversion circuit is connected to the sound source.

Claims

1. A method of controlling a sound source for an electronic musical instrument which comprises the steps of:

outputting operation data of a performance operation member corresponding to musical tone control parameters of a musical instrument;

correcting said operation data into values falling within a particular one of plural tone generation regions determined in accordance with at least one musical tone control parameter of said musical instrument; and

inputting said corrected operation data to said sound source.

2. A method according to claim 1, wherein said tone generation regions are determined based on a relation between two of said musical tone control parameters, and represents tone generation of said sound source designated as either regular or irregular, wherein the operation data is corrected to fall within a regular region.

3. A method according to claim 1, wherein said tone generation regions are expressed by a graph defined by four curves in a coordinate system in which two of said musical tone control parameters are respectively plotted along the ordinate and the abscissa, and a region defined by central two of said four curves constitutes a tone generation region, regions outside the tone generation region constitute generated tone sustaining regions and regions outside outermost two of said four curves constitute irregular tone regions.

4. A method according to claim 3, wherein said two musical tone control parameters are a bow pressure and a bow velocity.

5. A method according to claim 3, wherein said two musical tone control parameters are a breath pressure and an embouchure.

6. An electronic musical instrument comprising:

performance operation means for outputting operation data corresponding to musical tone control parameters of a musical instrument;

correcting means for correcting said operation data output by said performance operation means into values falling within a particular one of plural tone generation regions determined in accordance with at least one musical tone control parameter of said musical instrument; and

sound source means for receiving said corrected operation data as said musical tone control parameters and for generating a musical tone based on said corrected operation data, said musical tone simulating said musical instrument.

7. An electronic musical instrument according to claim 6, wherein said musical instrument is a rubbed string instrument, said musical tone control parameters comprises a bow pressure and a bow velocity and said performance operation means is a three-dimensional input device which outputs first position data, second position data and pressure data as said operation data.

8. An electronic musical instrument according to claim 6, wherein said musical instrument is a wind instrument, said musical tone control parameters comprises a breath pressure and an embouchure and said performance operation means is a three-dimensional input device which outputs first position data, second position data and pressure data as said operation data.

9. An instrument according to claim 6, wherein said particular tone generation region is changed so that it differs at the time of tone rising from at the time of its duration.

10. An instrument according to claim 6, wherein said sound source is a physically modelled sound source.