Digital signal processor: Tone generation

Two programs have been written for the recently developed single-chip digital signal processor (DSP) integrated circuit that enable it to function as a tone generator in testing transmission systems. One program is based on the table look-up method and the other on the Maclaurin expansion method. A DSP tone generator based on the look-up method can generate up to 12 components and is suitable for all transmission testing applications. A generator based on the Maclaurin expansion method is limited to less than four components and is particularly applicable in two-tone testing.