Will this null test be accurate?
lucasmusic
Thread Starter
#1
26th February 2011
Old 26th February 2011
  #1
Gear addict
 

Thread Starter
Will this null test be accurate?

I basically was trying out 96khz vs 192khz...then i got into doing 96khz using a Presonus vs MAudio Firewire interfaces.

file 1: ProFire at 96khz (with D-box D/A)
file 2: ProFire at 96khz (without D-box D/A)
file 3: Presonus at 96khz (with D-box D/A)
file 4: Presonus at 96khz (witout D-box D/A)
file 5: ProFire at 192khz (without D-box D/A)

My setup:

PreSonus Studio Project firewire interface (D-box D/A)
MAudio ProFire 2626 firewire interface (internal D/A)
Mytek (used to clock everything)
Dangerous D-box (D/A used only for 96khz sample rates)

My test:

Using Pro Tools 9
make a midi files and insert the Mini Grand on the tracks.
bounce audio tracks in realtime to wavs
import files on a new 44.1 session and invert phase on one track

My results:

All files nulled except for the recording from 96khz and 192khz sample rates.
Even the Presonus with D-Box v.s. ProFire without D-box. So I assume D/A makes no difference, not affecting sound recorded. I want sure since when bouncing in ProTools it requires bounce source, didnt know if that affected the final sound bounced.
The interesting thing was that between the 96khz and the 192khz the null test only difference i heard was the reverb was the only thing i heard on the 192khz and 96khz test. So I assume the 192khz really must affect more how plugins work in the sessions rather than the sound being recorded. ex. reverb tails are more accurate.
#2
26th February 2011
Old 26th February 2011
  #2
Gear addict
Quote:
Originally Posted by lucasmusic View Post
I basically was trying out 96khz vs 192khz...then i got into doing 96khz using a Presonus vs MAudio Firewire interfaces.

file 1: ProFire at 96khz (with D-box D/A)
file 2: ProFire at 96khz (without D-box D/A)
file 3: Presonus at 96khz (with D-box D/A)
file 4: Presonus at 96khz (witout D-box D/A)
file 5: ProFire at 192khz (without D-box D/A)

My setup:

PreSonus Studio Project firewire interface (D-box D/A)
MAudio ProFire 2626 firewire interface (internal D/A)
Mytek (used to clock everything)
Dangerous D-box (D/A used only for 96khz sample rates)

My test:

Using Pro Tools 9
make a midi files and insert the Mini Grand on the tracks.
bounce audio tracks in realtime to wavs
import files on a new 44.1 session and invert phase on one track

My results:

All files nulled except for the recording from 96khz and 192khz sample rates.
Even the Presonus with D-Box v.s. ProFire without D-box. So I assume D/A makes no difference, not affecting sound recorded. I want sure since when bouncing in ProTools it requires bounce source, didnt know if that affected the final sound bounced.
The interesting thing was that between the 96khz and the 192khz the null test only difference i heard was the reverb was the only thing i heard on the 192khz and 96khz test. So I assume the 192khz really must affect more how plugins work in the sessions rather than the sound being recorded. ex. reverb tails are more accurate.
I may have read how you set it up, incorrectly...but it doesnt seem like your are running out and back in...so no D-A A-D conversion going on...you are just internally bouncing the file....is that what you wanted to do?

cheers

Wiz
lucasmusic
Thread Starter
#3
26th February 2011
Old 26th February 2011
  #3
Gear addict
 

Thread Starter
yeah I suppose, I just wanted an accurate test between the difference sample rates and units electronics.
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