Originally Posted by 777
What do you recommend for sample rate conversion. dCS, Apogee, a particular software application, or other? Also your opinion on Pro Tools HD's 'straight from the manufacturer' sample rate conversion, & dither?
A 777 Subject.
Heres an 88.2 subject :-). The interesting thing about each of the processes we recommend is they often make just a tiny difference, but it all adds up in the end. For example, someone just posted that they have yet to see incontrovertible evidence that working in double sample rate really makes a diference for 44 and 48 end products. It's very hard to prove. But I feel that working at the double sample rate subtly improves things, and when you combine that with other incremental improvements in other areas, you get a better product. Improvements are CUMULATIVE.
One thing I'll say for sure, there is distinct improvement in purity of tone of the Cranesong HEDD's tube, pentode, and triode effects when working at 96K. It's not subtle. Digital compressors.... Maybe you won't notice it on one compressor on the guitars or vocal, but as the grunge accumulates, on each and every instrument, it starts to be noticeable.
Anyway, back to the question. Weiss is, in my opinion, a superb single pass SRC, quite nice going from 96 to 44, for example. DCS, I've used it many times but I don't have one here, it MAY be marginally better as a 2-pass unit, 96 to 48 followed by 48 to 44, for purists, but it is not quite up to the quality of the Weiss single pass. I say, "may" because I have not done the blind test, but both David Chesky and Bob Ludwig report that the DCS is the best if you do a two-pass conversion.
I honestly haven't tested Pro tools' tweakhead, I just didn't want to take a chance. Especially when there are specialist tools like Barbabatch or R8Brain that people have spent mucho hours refining and doing well available for reasonable price. Use the specialist tools for specialist jobs. No single DAW can do everything well. I found the 96 to 44 conversion or 44 to 96 conversion in SADiE to be lacking immediately and I don't use it, and I paid over $20,000 for my SADiE system and its plugins. There are some jobs that a $600 program (Wavelab) that I paid for does better than my SADiE!
So it shouldn't be a suprise that there are some things Pro Tools doesn't do great. If you are asking for an opinion, "is tweakhead good or bad?" I'd have to wager a guess, "it can't be bad, but it's highly unlikely it's great." Why take a chance when Barbabatch or R8Brain will set you back under $200? Some things are just not ragging over. :-)