
Chapter 5
Periodic Signal Generation
5.1 Theory
M
ANY 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 ...