Complexity in Signal Processing
نویسندگان
چکیده
We studied application of the cepstral analyses to the real-time signal processing. The paper describes the utilization and scope of the signal exponential weighting, diierent approaches to the phase unwrapping, and their computational complexity. A new unwrapping method that reduces the cepstral aliasing by combining the real and the diierential cepstrum is also presented. Its complexity is O(FFT). Testing the method on 54 diierent signals of length N = 256 showed an average error of 2.958 radians/sample with the standard deviation of 3.373, which is better as with another method suitable for the real-time cepstral processing, i.e. the adaptive phase integration, at the same complexity level.
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تاریخ انتشار 2007