| 摘要 |
The invention provides a method and apparatus for the modulation of more than one channel of audio in a digital amplification system. In the preferred embodiment of the invention, pulse width modulator outputs are staggered in time such that at idle only one channel switches states at a time. This is done to provide an even draw from the power supply, assuming that the same supply is used for the multiple channels. For example, in a two channel system, the idle state of the pulse width modulator for the first channel is 90 degrees out of phase with the pulse width modulator output of the second channel.
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