Chapter 5

Periodic Signal Generation


5.1      Theory

MANY interesting and useful signals can be generated using a DSP. Applications of some DSP-generated signals include, but are not limited to,

alerting signals such as different telephone rings, beeper message alerts, the call waiting tone, and the emergency alert system, which is the replacement for the emergency broadcast system tones;

system signaling such as telephone dialing tones (DTMF) and caller ID tones;

oscillators such as a sine and/or cosine waveform that are routinely used to generate a wide variety of communications signals; and

pseudonoise such as the special signals used for spread spectrum methods (e.g., satellite communication, Wi-Fi, etc.) and other uses.

To keep the ...

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