At the moment I am using decreasing window sizes on a log 2 scale.
It's still pretty blurred, and I don't know if I just don't have the
right window parameters,
and if a log 2 scale is too coarse and differs too much from an auditory
scale, or if if I don't have
enough overlaps in resynthesis (I have four).
Or if it's all together.
The problem is the lowest octave or the lowest two octaves, where I need
a long
window for frequency estimation and partial tracking, it just soundded
bad when the window was smaller in this range
because the frequencies are blurred too much I assume.
Unfortunately I am not sure what quality can be achieved and where the
limits are with this approach.
Am 06.11.2018 um 14:20 schrieb Ross Bencina:
On 7/11/2018 12:03 AM, gm wrote:
A similar idea would be to do some basic wavelet transfrom in octaves
for instance and then
do smaller FFTs on the bands to stretch and shift them but I have no
idea
if you can do that - if you shift them you exceed their bandlimit I
assume?
and if you stretch them I am not sure what happens, you shift their
frequency content down I assume?
Its a little bit fuzzy to me what the waveform in a such a band
represents
and what happens when you manipulate it, or how you do that.
Look into constant-Q and bounded-Q transforms.
Ross.
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