Digital Tone Generator
Original Publication Date: 1980-May-01
Included in the Prior Art Database: 2005-Feb-13
The piece-wise linear waveform in Fig. 1 is an approximation to a sine wave that can be digitally generated by the apparatus in Fig. 2. The sine wave is divided into eight segments in each cycle. Segments 1, 2, 4, 5, 6 and 8 all have the same time duration. Segments 3 and 7 similarly have the same time duration. Of course, the duration of each cycle and the duration of the segments must be adjusted for generation of each frequency.