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PULSE WIDTH MODULATOR FOR USE IN A DIGITAL AMPLIFIER, METHOD FOR REDUCING POP NOISE IN A DIGITAL AMPLIFIER AND DIGITAL AMPLIFIER
PULSE WIDTH MODULATOR FOR USE IN A DIGITAL AMPLIFIER, METHOD FOR REDUCING POP NOISE IN A DIGITAL AMPLIFIER AND DIGITAL AMPLIFIER
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机译:用于数字放大器的脉冲宽度调制器,减少数字放大器中的流行噪声的方法和数字放大器
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摘要
A pulse width modulator for use in a digital amplifier, includes a pop noise reducer for reducing pop noise by controlling a width and a phase of a pulse of a PWM signal output from the pulse width modulator, wherein the pop noise reducer contains: a PWM pulse register for storing a width and a phase values of a pulse of the PWM signal; and a pulse generator for outputting the PWM signal according to the values stored in the PWM pulse register. The pulse width modulator reduces pop noise generated when power supply to a digital amplifier is started and interrupted.
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