JP2007094439A5 - - Google Patents

Claims (5)

A musical tone synthesis method for synthesizing a musical tone based on a musical tone signal generated by executing a plurality of generation processes in a processor,
Among the plurality of generation processes, a generation process with a large amount of calculation required for processing of one sound by the processor, a generation process in which the sampling cycle cannot be changed by the processor, or the contents of the musical sound generation algorithm is changed by the processor Determining the execution order so that the generation process that cannot be performed is given priority;
An execution process for generating a musical sound signal in each generation process by executing the plurality of generation processes in the order specified in the execution order at predetermined intervals, and is executed at least at the end of the execution order. An execution process including a load adjustment process for controlling the load amount of the processor by changing at least one of the number of sounds that can be changed in the generation process, the sampling period, or the content of the musical sound generation algorithm;
A musical tone signal comprising: synthesizing a musical tone signal based on the musical tone signals generated by performing the plurality of generating steps; and mixing the synthesized musical tone signal to obtain a musical tone signal to be output. Synthesis method. In a processor , a musical sound processing method for applying an effect to a musical sound by executing a plurality of signal processing steps,
A connection designation process for generating connection information for designating connections between the plurality of signal processing processes;
An order determination process for determining an execution order of the plurality of signal processing processes according to the connection information;
A generation process for generating a musical sound signal of multiple samples every predetermined time;
An execution process for giving an effect corresponding to each signal processing process to the musical sound signal by executing the plurality of signal processing processes in the order specified in the execution order for each predetermined period, An execution process including a connection process for inputting a musical sound signal processed in at least one signal processing process in the middle of the execution order to a signal processing process executed in the subsequent order according to connection information;
A musical sound synthesis method comprising: mixing a musical sound signal processed in the plurality of signal processing steps to obtain a musical sound signal to be output. A musical sound synthesis method for synthesizing musical sounds using a control program and a plurality of musical sound processing programs in a processor,
(A) The control program is:
In the processor,
Every Jo Tokoro time, with each be capable of storing a plurality of waveform samples, stored waveform samples respectively prepared a predetermined number of buffers to be output to a predetermined output destination, predetermined with respect to the plurality of musical tone processing programs A command procedure for instructing the processing of the tone signal in the execution order of
An output procedure for outputting a musical sound signal stored in at least one of the predetermined number of buffers to the predetermined output destination according to the predetermined execution order ;
(B) The plurality of musical tone processing programs are:
In the processor,
Depending on the previous SL command, generation processing of the musical tone signal or a musical tone processing procedure for executing the predetermined signal processing based on the musical tone signal output at the output procedure,
Controlling the volume of a musical tone signal output in the musical tone processing procedure with predetermined level information, and executing a mixing procedure for adding all the buffers in which the level information is controlled among the predetermined number of buffers tone synthesis wherein the at. A computer-readable recording medium on which a program for causing a computer to execute the method according to claim 1 is recorded.   A musical tone synthesizer for executing the method according to claim 1.