Add pre-emphasis to spectrogram, fix typing

TimeViewers / signalworks

MIT License

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Add pre-emphasis to spectrogram, fix typing #25

Closed j9ac9k closed 4 years ago

j9ac9k commented 4 years ago

This change is API breaking, so when merged into the next release, we should bump up the minor version, not just the patch version.

We should expose the NFFT points for the FFT calculation such that the method doing the call can specify the number of FFT points; but by default should default to the nextpow2 method.

lxkain commented 4 years ago

The number of FFT points is determined automatically, based on how many pixels the spectrogram is displayed at.