Article citationsMore>>

RIFEDG, VINCENTGA. Use of the discrete fourier transform in the measurement of levels and tones[ J]. Bell Syst. Tech. J. , 1970, 49( 2): 197- 228.

has been cited by the following article:

• TITLE: Amalgamated-signal Cymometer Based on TMS320F28335

  AUTHORS: Z. Y. Xu, W. T. Lv, Z. Y. Li

  KEYWORDS: Digital Frequency Meter; Same Precision Measurement; DSP; All-phase Spectral Analysis; Sampling-frequency Self-adaption

  JOURNAL NAME: Energy and Power Engineering, Vol.5 No.4B, November 18, 2013

  ABSTRACT: In our design, an amalgamated-signal cymometer is developed with a TMS320F28335 DSP chip ---- we use its on-chip 12-bit 16-channel AD to conduct a novel dual-sequencer synchronize sampling and averaged to improve the accuracy. Considering the algorithm, we use TI's C28x_FPU_Lib to conduct a FFT with sampled results and correct spectrum withTime-Shift Phase Difference Correcting Spectrum Method based on all-phase spectral analysis. Namely, we design a sampling-frequency self-adaption algorithm which makes operation keep on without outside-hardware command. Actually, the test result shows that our design's frequency resolution ratio is up to 0.4%, and the maximum frequency’s D-value between main and minor signal is up to 29.99 kHz.