Patent ID: 6140566
Filing Date: 2000-10-31
Classification: G10H,Y10S

Abstract:
A method of producing a progression of musical tones according to song data by means of a tone generator having a register, the method comprising the steps of:providing the song data in the form of a sequence of event data effective to specify a musical tone to be produced and time data effective to indicate a timing of producing the musical tone;sequentially retrieving the event data and the time data corresponding thereto from the provided song data;converting the retrieved event data into control parameters effective to characterize the specified musical tone and reserving the control parameters together with the corresponding time data in a memory;generating waveform data of the musical tone by operating the tone generator based on the control parameters, which are loaded from the memory into the register upon arriving of the timing indicated by the corresponding time data; andreading the waveform data to produce the musical tone in matching with the timing indicated by the corresponding time data, whereinthe generating step has a priority over the converting step as the generating step must periodically operate the tone generator at a period to ensure the progression of the musical tones, while the converting step can be executed independently from the progression of the musical tones to reserve the control parameters in advance of the loading thereof into the register of the tone generator.