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Gear / Technical Help => Battery Boxes, Preamps, Mixers, ADCs, and Processors => Topic started by: Roving Sign on September 12, 2007, 07:29:57 AM

Title: If you had to truncate bits - would you prefer to truncate the board or aud?
Post by: Roving Sign on September 12, 2007, 07:29:57 AM

Looks like the dbx386 will be out of commission for the weekend...

So I have to break out the old Yamaha AD2K - this is an older, rack mount 20 bit A/D

I've been running two JB3s lately (four 16 bit tracks) using SPDIF to sync (so there is no drift in post) - I can produce one 16 bit source - but will have to truncate the other...

The Yamaha - despite being 20 bit - has a RCA/SPDIF out labeled "DAT/MD"

I am familiar with the truncation issue - so no need to rehash that...

I sort of feel I should truncate the Soundboard source - I would think the truncation artifacts would be less apparent in a tight, discrete source...vs a diffuse AUD source...

Also - will truncation screw up my clocks? Will my sources still be syncable? (instinct says yes)

Title: Re: If you had to truncate bits - would you prefer to truncate the board or aud?
Post by: Shawn on September 12, 2007, 07:57:44 AM

I'd say truncate which ever source you plan on being lower in the mix. If it's going to be a 50/50 sort of mix then it's hard to say.

Title: Re: If you had to truncate bits - would you prefer to truncate the board or aud?
Post by: Chilly Brioschi on September 12, 2007, 08:14:19 PM

The typical audience noise in a show runs about 40db to 30db, allowing for less than 16 bits of headroom, if that helps.