> Smoothness in the time direction is easier to achieve: the 1024 bins window can be advanced by arbitrarily small time steps.
It appears you're doing just that, but the time "width" is still readily apparent in many of the spectrograms, most obviously on the birdsong ones -- almost like a horizontal motion blur.
Would a deconvolution filter be able to meaningfully horizontally "deblur" the spectrograms? So the birdsongs didn't appear to be drawn with a wide-tip marker, but rather a ballpoint pen? So not just hi-res, but hi-focus.
It appears you're doing just that, but the time "width" is still readily apparent in many of the spectrograms, most obviously on the birdsong ones -- almost like a horizontal motion blur.
Would a deconvolution filter be able to meaningfully horizontally "deblur" the spectrograms? So the birdsongs didn't appear to be drawn with a wide-tip marker, but rather a ballpoint pen? So not just hi-res, but hi-focus.