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Signal processing device and class D amplifier that can reduce radiation noise even if the number of channels of a digital audio signal inputted thereto increases
Signal processing device and class D amplifier that can reduce radiation noise even if the number of channels of a digital audio signal inputted thereto increases
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机译:即使输入数字音频信号的声道数增加,也可以减少辐射噪声的信号处理设备和D类放大器
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摘要
A class D amplifier defines different sets of resampled points A and B for channels chA and chB of an input digital audio signal, extracts an interpolation signal of the digital audio signal at the resampled points A and another interpolation signal of the digital audio signal at the resampled points B, and makes a correction to the phase of at least one of the interpolation signals. Thereby, radiation noise can be reduced even if the number of channels of the digital audio signal increases.
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