How can sinusoidal waves be produced by ADPCM?
Descriptive Answer:
Tables 10.1.1 to 10.1.4 show ADPCM data for 4-bit (0 to F) sinusoidal waves, and Table 10.1.5 shows ADPCM data for 3-bit (0 to 7) sinusoidal waves. There are four kinds of 4- bit data corresponding to four, six, ten and twelve samples depending on the repeated data count per period of a sinusoidal wave. Figure 10.3 shows a model of an output waveform with a supply voltage (VDD) of five volts.
See Q4.3, Table 10.2 for determining the frequency of the sinusoidal wave and the frequencies.
