WAVEFORM GENERATING DEVICE AND METHOD, AND DECODER

摘要

The amplitude, phase and frequency of a sine wave to be generated is calculated from a feature s1 delivered to feature measuring means (2) and sent to initial setting means (3). The initial setting means (3) calculates the first two points of the sine wave and sends them as initial values s4 to an oscillator (sine wave generating means) (4). The oscillator (4) sequentially calculates the values of sample points of the waveform by using a recurrence formula according to the initial values given by the initial setting means (3) to generate a since wave signal. Thus without carrying out modulo addressing, a sine wave can be generated.