question about digital audio & sound quality with examples?


i love the convenience of digital audio & as a way to improve the sound quality i started 

post processing the commercial release by pitch shifting the audio in a certain way that i

discovered improved the sound to my ears. however there are some side effects from

using this technic (1) the dynamic range is improved by +3db so i have to lower the volume

by -3db to keep the audio from clipping here's  before & after pictures  from the dr test.
https://s33.postimg.cc/mjd8vnsy7/before.png
https://s33.postimg.cc/92gacu8cv/after.png

here's the before/after pictures of the waveform this might be helpful?
https://s33.postimg.cc/vi7wmufmn/image.png
https://s33.postimg.cc/859v3vhe7/image.png

(2)another side effect is for some unknown reason it removes all the brickwall limiting 

from the original digital/cd as if it had never been put on there in the first place? & 

i don't know how to get it back. however for some strange reason it sounds better to my ears.

here's a before/after flac audio sample i'm hoping it's just the placebo effect than i can move on.
(commercial release)https://my.pcloud.com/publink/show?code=XZhju27Z2wLJNSaYAOuLFd6Jt1yebVcob1Ok
(pitch shifted)https://my.pcloud.com/publink/show?code=XZiju27ZkH70T0AYlXVLVXytqVK1OjlVwEO7
guitarsam

I accidently switched the oscillator coax cables on one of my converters once so that the 49MHz clock was switched with the 45MHz clock.  When I played 44.1 tracks, they were using the 48 oscillator, so they were sped-up a bit.

My first impression was that this was an improvement, because the dynamics seemed to improve.  I fixed it of course because it is completely contrived and inaccurate.

I would recommend that you pursue other ways of getting the same increase in sound quality, like:

1) reduce the  jitter

2) eliminate or minimize the effect of digital filtering in the DAC

3) buy better equipment


Steve N.

Empirical Audio