MTW 32K FFT size MTW vs 32K FFT size 32K FFT size vs MTW (for example from +/- 9600Hz up to 20K the frequency resolution in this range is 133Hz steps compared to 1.46Hz when using 32K FFT sizes). The disadvantage using MTW transfer measurements would be larger steps in the frequency resolution in the high range. Type set to complex would be Smaart “rejecting/not showing” reflections that fall out of the Time Constant per frequency range if Coherence Threshold is set above the drop in Coherence at the frequencies where the reflections cause problems. The advantage of the MTW transfer engines and the Mag. So in the screen capture ( Setting Up) I start with setting up 3 dual channel transfer measurements and use the 32K option.Īfter setting up 3 32K transfer measurements I also configure 3 MTW transfer measurements on the same mic signals vs reference signals. Coherence will show miss-alignment problems b.t.w. The disadvantage has to do with the Time Constant of a 32K FFT (682ms) and reflections which would be shown by Coherence but any reflection within the 682ms will not be shown or is less obvious. The advantage of choosing the 32K FFT size has to do with the number of data points specially in the mid high to high range. Both work but there are some specific reasons for me to choose the 32K option for the FIR programming. I’ve had some remarks on why i would take 32K transfer measurements as to MTW measurements.
I started working on a couple of files explaining A way of working with Smaart V8 and FIR designer M.
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