Frequency analyzer over 22khz

GoldWave general discussions and community help

Re: Frequency analyzer over 22khz

Postby GoldWave Inc. » Wed Oct 10, 2018 7:13 pm

When using a 192kHz sampling rate, you have to increase the FFT size to increase the resolution of the Spectrum Filter. With a size of 11 you have 1024 frequencies spread across 96000 Hz, which gives the 93 Hz cutoff you mentioned.

If you are interested in frequencies below 93Hz, then either a lower sampling rate must be used or the FFT size must be increased. There is no way around the mathematics. Generally echo isn't a problem with the Spectrum Filter (there is no temporal modification).
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