Audio reproducing device and method, audio amplifier, and...

Details Audio reproducing device and method, audio amplifier, and... Audio reproducing device and method, audio amplifier, and...

2006-09-05

2006-09-05

Nguyen, Patricia (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S20700P

Reexamination Certificate

active

07102426

ABSTRACT:
A digital ΔΣ modulated signal produced by a quantizer (1c) in a ΔΣ modulation processing unit (1) is put in to a feedback loop before inputted to a power switch (2) and converted into an analog signal by a D/A converter (1d). This analog signal is fed back to the input stage (a differentiator (1a)) of the ΔΣ processing unit (1) to prevent the switching distortion of the power switch (2) itself from being introduced into the feedback loop thereby to suppress the influence of the switching distortion.

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