Patent ID: 6798369
Filing Date: 2004-09-28
Classification: G10H,G11B,H04R

Abstract:
A system for generating an analog signal to produce sound comprising:a control circuit having a memory; a first pulse width modulator in communication with the control circuit, the first pulse width modulator having a count range of 0 to Z and a duty factor of D for providing a first signal component; a second pulse width modulator in communication with the control circuit, the second pulse width modulator having a count range of 0 to Y and a duty factor of C for extruding a second signal component; a first and second resistor, the first resistor being in communication with the first pulse width modulator and having a resistance ratio relative to the second resistor of Y*(Z+1)*D/Z*C, the second resistor being in communication with the second pulse width modulator; and a common node in communication with the first and second resistors for mixing the first and second signal components to produce the analog signal.