In the SPT Toolbox, the window length of adaptive functions is limited to 60.000 points. Is there a way to change this?

[ptonj]

Hello,
I am trying to use the Adaptive functions like AdaptiveSpectrogram or AdaptiveTransform...As I am working with low frequencies, I need to have a large window length. However it seems that  the length is limited to  60.000 points...Is there any possibilities to solve this problem?
Thanks all

[MJF]

I don't know if the window size is confiigurable, but is there a need for a lot of oversampling for your application? Do you have high-frequency components on your low-frequency waveform that you need to resolve?

If not, you can probably reduce your sample rate to capture more of your low-frequency waveform. Even if you cannot reduce the sample rate too much, you may still be able to decimate the sample buffer to reduce its size to fit within the window. The only problem with that approach is you have to be wary of aliasing effects.

[ptonj]

Thank you for answering,
I tried to reduc my sampling frequency but I am limited because my banwith is from 0.01Hz to 500Hz, approximately. So, either I try to work first with the low frequencies, and after with the highest ones, either ....I don't know how to do. Too much noise when I decrease the sampling frequency.
I think I will wait until the window length grows....
Thanks