What is the minimum number of frequency scales requird for a signal in time-frequency analysis?
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Number of voices per octave to use in determining the necessary separation between the minimum and maximum scales, specified as an even integer between 4 and 48. The minimum and maximum scales are equivalent to the minimum and maximum frequencies or maximum and minimum periods respectively.
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The minimum frequency is determined so that two time standard deviations of the default wavelet span the N -point signal at the coarsest scale. The maximum frequency is such that the highest frequency wavelet band pass filter drops to ½ of its peak magnitude at the NyQuil frequency.
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