Abstract
Abstract With the development of digital audio technology, recently, a so-called DSD(direct stream digital) coding technique becomes a hot subject of research. Now, engineers all over the world are researching on digital power amplifier and digital speaker, hoping that 1-bit stream in the form of DSD can be amplified by a digital power amplifier and then the amplified signal can be passed to a digital speaker directly so that the high-fidelity of digital audio can be achieved. In the procedure of development, the demand of high-speed is placed on the process of filtering and noise-shaping. In order to fulfill this demand, a high-speed data processing channel based on DSD is presented in this paper, the speed of data processing is enhanced effectively by using RNS FIR filter in DSP.
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