The paper can be viewed here.
Abstract—Gain structures in digital filters are a source of product quantization noise due to finite wordlength. With certain assumptions, this gain structure’s noise can be modeled as a white noise source. This paper seeks to explore the effects of product quantization in the HVXC Decoder for the MPEG-4 Audio3 standard. The filter of interest is a fourth order high pass component in the post-processing stage of the decoder. Also, a scaling strategy will be employed to mitigate the effect of the quantization noise to reduce, if not completely eliminate, the chance of register overflow.