[ProAudio] Dolby A with no tones (was 4-channel program distribution format(s))

[Jim Brown]

On 1/25/2023 5:04 PM, Richard L. Hess via ProAudio wrote:
Hi Richard,

> It all depends on the use.
> 
> For archival preservation copies, I don't touch EQ or do anything, 
> thereby allowing some future engineer the opportunity to use better 
> tools than I have available in the future to do something without having 
> to undo anything.

Yes, I've done exactly that when archiving stuff, and for the same reason.
> 
> However, for many projects, I deliver a preservation copy and an access 
> copy which is EQ'd, de-noised, and whatever else is needed.
> 
> Of course I try to set the correct tape playback EQ (NAB/IEC) or some of 
> the other variations listed in IASA TC-04 and use my ears for that, but 
> keep it standards-based.
> 
> Noise reduction like we're talking about is a big concern, which is why 
> I provide a raw and a noise reduced transfer, again, so no one has to 
> undo something I did if it was wrong, and undoing NR is no where near as 
> easy as undoing EQ.

If I were in that biz I'd do the same.

Regards, Jim