I am using tfrridh on a transient signal with a sampling rate is 500 Hz. The result is correct, but appears to have some kine of folding occurring at 250 Hz. I.e. the frequency atom that correctly appears at 10 Hz also appears at 490 Hz. I am probably doing something stupid here, can anyone help?
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[Tftb-help] Frequency range of tfrridh.m,
John Shishido<=