Dynamic pitch shift

[Ola Fosheim Grøstad via Digitalmars-d-learn]

On Friday, 26 February 2016 at 13:21:12 UTC, Guillaume Piolat 
wrote:
> We are not talking of the same thing. I was thinking about the 
> table frequency cutoff which is 2x lower every level of mipmap

Ok. I think is most common to use high levels of oversampling for 
tables so one can get better SNR using cheap interpolation. But 
I've lately thought a bit about encoding the complexity of a 
segment of the function in the table so that the renderer can 
choose an interpolation technique that matches the location in 
the table (e.g. straight line, use lerp; high frequency wobble, 
use sinc). To make it work for realtime one would have to track 
the cost and revert to lower quality when the budget has been 
spent.