Dual-channel multiplexing technology and its realization in interpolation filter in stereo audio sigma-delta DAC

Liu, Sujuan; Jiang, Wenshu; Zhang, Meihui

doi:10.1007/s10470-014-0403-0

Cited by 2 publications

(1 citation statement)

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“…It will be interesting to investigate how their work performs at very high sampling rate alteration D in comparison with this work [13] [14] [15]. Other research has looked into further bit-level optimisation of filter coefficients in a multistage architecture [16] [17], and specific application cases [18] [19]. It would be interesting to see how the optimal filter can be applied to those cases.…”

Section: Resultsmentioning

confidence: 99%

Practical considerations on optimising multistage decimation and interpolation processes

Zhu

Wang

et al. 2016

2016 IEEE International Conference on Digital Signal Processing (DSP)

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Multistage filter design is a complex multidimensional optimisation problem. The formulae for optimal design generally yield non-integer real numbers for the sample-rate-changing factors of multiple stages. Approaches yielding useful integer results have high computational cost and do not consider important multistage filter design properties. We have developed a simplified algorithm for directly searching the optimal integer results. Considering the most useful practical design parameters, optimal results can be approximated with a limited number of sets for any designs satisfying certain constraints, with negligible costs. This vastly simplifies the complexity of the problem.

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