Jim Audiomisc
pfm Member
Just to add in case any programmer is interested:
http://www.audiomisc.co.uk/software/ARMiniX/Upsampling.html
This is a page I wrote years ago. The hardware I used at the time is now 'gone' but does two things here:
1) The graph shows the overall effect of various types of reconstruction filter. One is the 'Legato Link' (linear interpolation).
2) The programs as written are for RISC OS. But source code is provided. So a programmer who was interested could modify the source code as a way to generate upsampled files that then have the same 'signatures' as NOS, etc, when played via a high rate DAC. So people can then experiment and decide what differences they can hear, or prefer/hate.
http://www.audiomisc.co.uk/software/ARMiniX/Upsampling.html
This is a page I wrote years ago. The hardware I used at the time is now 'gone' but does two things here:
1) The graph shows the overall effect of various types of reconstruction filter. One is the 'Legato Link' (linear interpolation).
2) The programs as written are for RISC OS. But source code is provided. So a programmer who was interested could modify the source code as a way to generate upsampled files that then have the same 'signatures' as NOS, etc, when played via a high rate DAC. So people can then experiment and decide what differences they can hear, or prefer/hate.