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wxq99 · 15th May 2008, 05:03 AM

First, I would like to thanks Bob Ketz for the great mastering book, thanks for sharing the valuable experience.

While, I read that the higher sample rate "sounds" good is because the inperfect digital filter when the signal pass the A/D and D/A converter. I would agree on this opinion because the rule of nyquist frequency. And for 44.1KHz sample rate, the frequency limit is 22.05KHz and it is possible to record and reproduce the information below it, theoretically. The difference is because the digital filter.

However, bob also mention that that higher sample will reduce the distortion during the post production(the point is actually by J.A.Moorer) since some nonlinear process such as filter, EQ and compression will add less distortion to the signal. I just want to know if anyone have do an objective test to prove the point? I have searched the AES database but not find a paper to explain it. If it is true, should we mastering a 44.1KHz session in 88.2KHz or higher for a better result? Thanks.

15th May 2008, 05:03 AM	#1
wxq99 Gear interested Join Date: Dec 2007 Posts: 17	upsampling while mastering? First, I would like to thanks Bob Ketz for the great mastering book, thanks for sharing the valuable experience. While, I read that the higher sample rate "sounds" good is because the inperfect digital filter when the signal pass the A/D and D/A converter. I would agree on this opinion because the rule of nyquist frequency. And for 44.1KHz sample rate, the frequency limit is 22.05KHz and it is possible to record and reproduce the information below it, theoretically. The difference is because the digital filter. However, bob also mention that that higher sample will reduce the distortion during the post production(the point is actually by J.A.Moorer) since some nonlinear process such as filter, EQ and compression will add less distortion to the signal. I just want to know if anyone have do an objective test to prove the point? I have searched the AES database but not find a paper to explain it. If it is true, should we mastering a 44.1KHz session in 88.2KHz or higher for a better result? Thanks.