Tone generator for storing and mixing basic and differential wave data

A tone generator comprising;

• a first wave memory for storing first wave data of a musical tone signal;
• a second wave memory for storing second wave data representing fluctuations in widths of musical tone waves corresponding to the first wave data;
• first reading means for reading the first wave data from said first wave memory;
• second reading means for reading the second wave data from the second wave memory;
• random signal generation means for generating a random signal;
• and
• imparting means for imparting fluctuations to the first wave data read by the first reading means and outputting the fluctuation imparted wave data as musical tone data, wherein the fluctuations vary randomly with time and the fluctuations have characteristics controlled according to the second wave data read by the second reading means.

A tone generator method comprising the steps of:

• storing first wave data of a musical tone signal in a first memory;
• storing second wave data representing fluctuations in widths of musical tone waves corresponding to the first wave data in a second memory;
• reading the first wave data from said first wave memory;
• reading the second wave data from the second wave memory;
• generating a random signal;
• and
• imparting fluctuations to the first wave data read and outputting the fluctuations imparted wave data as musical tone data wherein characteristics of the random signal are controlled according to the second wave data.