JP2013047713A5

JP2013047713A5 - Musical sound generation device, musical sound generation program, and electronic musical instrument

Info

Publication number: JP2013047713A5
Application number: JP2011185697A
Authority: JP
Filing date: 2011-08-29
Publication date: 2014-06-26
Anticipated expiration: 2031-08-29

Description

本発明は、押鍵に基づく楽音データとオーディオデータとが協働する楽音生成装置、楽音生成プログラム及び電子楽器に関する。 The present invention relates to a musical sound generating device , a musical sound generating program, and an electronic musical instrument in which musical sound data based on key depression and audio data cooperate.

本発明は、オーディオデータを自動伴奏として再生する際に、演奏者の鍵操作に応じて適切なオーディオデータの読み出しを実現できる楽音生成装置、楽音生成プログラム及び電子楽器を提供することを目的とする。 An object of the present invention is to provide a musical sound generating apparatus , a musical sound generating program, and an electronic musical instrument capable of realizing appropriate audio data reading according to a player's key operation when reproducing audio data as an automatic accompaniment. .

本発明によれば、オーディオデータを自動伴奏として再生する際に、演奏者の鍵操作に応じて適切なオーディオデータの読み出しを実現できる楽音生成装置、楽音生成プログラム及び電子楽器を提供することが可能となる。 ADVANTAGE OF THE INVENTION According to this invention, when reproducing audio data as an automatic accompaniment, it is possible to provide a musical sound generation device , a musical sound generation program, and an electronic musical instrument that can realize appropriate audio data reading in accordance with a player's key operation. It becomes.

Claims

Storage means for storing music data including time information indicating the pitch and tone generation timing of the musical sound constituting the music, and audio data that is accompaniment data of the music related to the music data;
Musical tone data generating means for generating musical tone data of a predetermined musical tone based on an operation of a performance operator arranged in parallel;
An audio data reproducing means for reading out the audio data according to an elapsed time based on time information included in the music data,
Jump destination detection for detecting from the audio data the first zero-cross point closest to the normal sound generation timing in one direction in time series based on the normal sound generation timing in the music data for the operation of the performance operator Means,
Operation determining means for determining whether or not the performance operator that generates a musical tone having a pitch corresponding to the sound generation timing has been operated before the sound generation timing indicated in the song data;
When it is determined by the operation determining means that the performance operator is not operated, the sound of the musical sound that is sounded among the zero cross points before the zero cross point, starting from the first zero cross point. A loop destination detecting means for detecting a second zero cross point existing at a position corresponding to an end point of a section proportional to a period matched to high;
Loop reading means for repeatedly reading out the audio data using a section between the second zero cross point and the first zero cross point as a loop section;
When it is determined by the operation determining means that the performance operator has been operated after reading is started by the loop reading means, the latest third one in one direction in time series from the operation timing of the performance operator. Jump source detection means for detecting the zero cross point of the audio data,
The audio data reproducing means is configured to cause the audio data read to jump from the detected third zero cross point to the detected first zero cross point, and thereafter to continue reading normal audio data. Control means for controlling;
A musical sound generating device having

The audio data reproducing means updates the elapsed time based on the regular sounding timing when the audio data read-out jumps from the third zero cross point to the first zero cross point, and the updated progress The musical sound generation apparatus according to claim 1, wherein the audio data is read according to time.

The jump source detection means is configured to find the third zero cross point in the future in the time series from the operation timing of the performance operator,
The musical tone generating apparatus according to claim 1, wherein the jump destination detecting means detects a first zero cross point that is in the future in time series from the normal sound generation timing based on the normal sound generation timing.

In the audio data, a zero cross point of a predetermined phase is located at a timing corresponding to the tone generation timing of the musical sound,
The musical tone generating apparatus according to claim 1, wherein the jump destination detecting means detects a first zero cross point having a predetermined phase corresponding to the regular sounding timing.

Music data including time information indicating the pitch and tone generation timing of the musical sound constituting the music, and storage means storing audio data which is accompaniment data of the music related to the music data, and a performance operator arranged in parallel A computer comprising musical sound data generating means for generating musical sound data of a predetermined musical sound based on an operation, and audio data reproducing means for reading out the audio data according to the elapsed time based on time information included in the song data In addition,
Jump destination detection for detecting from the audio data the first zero-cross point closest to the normal sound generation timing in one direction in time series based on the normal sound generation timing in the music data for the operation of the performance operator Steps,
An operation determination step for determining whether or not the performance operator for generating a musical tone having a pitch corresponding to the sound generation timing has been operated before the sound generation timing indicated in the song data;
When it is determined that the performance operator has not been operated, the cycle is consistent with the pitch of the tone being played out of the zero cross points before the zero cross point, starting from the first zero cross point. A loop destination detection step for detecting a second zero cross point existing at a position corresponding to the end point of the proportional section;
A loop reading step of repeatedly reading out the audio data with a section between the second zero cross point and the first zero cross point as a loop section;
When it is determined that the performance operator has been operated after reading is started by this loop reading step, the nearest third zero cross point in one direction in time series from the operation timing of the performance operator is obtained. , A jump source detecting step for detecting from the audio data;
The audio data reproducing means is configured to cause the audio data read to jump from the detected third zero cross point to the detected first zero cross point, and thereafter to continue reading normal audio data. Control steps to control;
Music generation program that executes

A performance controller,
A musical sound generating device according to claim 1;
Audio means for outputting an acoustic signal based on the musical sound data and audio data from the musical sound generating device;
Electronic musical instrument with