Expandable MDC-based FFT architecture and its generator for high-performance applications

Lin, Bu-Ching; Wang, Yu-Hsiang; Huang, Juinn-Dar; Jou, Jing-Yang

doi:10.1109/socc.2010.5784750

Cited by 2 publications

(1 citation statement)

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“…In this work, N is set as 512. When the period is power of 2, we can use radix-2 Fast Fourier transform (FFT) algorithn to compute discrete Fourier transform [23], [24]. We separate the points of Xk into even and odd point.…”

Section: Architecture Of Fast Fourier Transformmentioning

confidence: 99%

Hardware design for blind source separation using fast time-frequency mask technique

2022

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In this paper, we propose a fast time-frequency mask technique for blind source separation in order to separate a mixture of two input sounds in single signal automatically. Mostly previous methods utilize a linear sensor array, and therefore they cannot separate symmetrically positioned sources. To overcome such problems, we first define two features which are normalized level-ratio and phase-difference. Next, we use our method to decrease Direction of Arrival (DOA), this can reduce the variance of features so that it can reduces iterations of k-means. Finally, according to the clustered features, a mask is generated. Our method does not require any prior information or parameter estimation and we have made a real demonstration system. We use Signal to Distortion Ratio (SDR) and Signal to Interference Ratio (SIR) to compare our method. Then we present hardware design. Hardware design uses TSMC 90-nm CMOS process. As a cost-effective result, it consumes about 120K gates and executes with frequency of 10MHz. The power consumption is only 2.92 mW with low power design considerations.

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Section: Architecture Of Fast Fourier Transformmentioning

confidence: 99%