[sdiy] Digital accumulator VCO core?

Gordonjcp gordonjcp at gjcp.net
Tue Feb 16 14:24:23 CET 2021


On Mon, Feb 15, 2021 at 06:32:45PM +0000, Mike Bryant wrote:
> No.  Because the 16 (sic) bit Burr-Brown DACs in every CD player were crap, the ADCs in the digitization studio weren't much better, and good compressors were rare so a lot of CDs were recorded with so much headroom lots of the time the output was down towards the noise floor.  That's why many CDs were remastered in the 1990s.  Also remember the Phil Collins debacle where the CD stopped playing half way through because a particular bit sequence matched the end of track flag.  Everybody was saying "why the f*** didn't they just wait until 20 bits was available".  Quite a few artistes refused to do CDs until the quality improved when ADC dithering and 1 bit DACs came along.
> 

Yeah, not really buying it to be honest.  16-bit is comfortably below the level of what is perceptable, especially once you've stuck it through a lowpass filter that rolls off well above human hearing.

> Of course nowadays with MP3, a whole generation has found about 12 bits is more than enough for their hyper-compressed noise, but hey-ho.
 
You're listening to 44.1kHz 16-bit programme material with 32kHZ 12-bit ears, so it make sense.

-- 
Gordonjcp




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