Let's take a look at Bit Depth as applied to digital audio: "Bit Depth
divides a given sample by its value."
BIT DEPTH DATA POINTS DYNAMIC RANGE
8 256 48dB
16 65,536 96dB
24 4,294,967,296 144dB
Now, lets take a look at the available data points per bit for CD
quality digital audio: 65,536 (data points) divided by 96 (dB of dynamic
range) = 682.6 data points for each bit of a given sample.
Compare that to 24 Bit/ 96K digital audio: 4,294,967,296 (data points)
divided by 144 (dB of dynamic range) = 29,826,161 data points for each
bit of a given sample. And, there are more than twice a many samples
taken! Now, we are talking about some decent resolution.
So, even though you have only 70 dB of dynamic range available for those
old tape recordings (before the introduction of Noise Reduction), you
will obviously capture much more of that available dynamic range using
the archival standard 24Bit/96K (Hi Rez) sample rate and bit depth.
The same logic applies to any of the old audio carriers.
Plus, when restoration takes place, the results are less artifact prone
when using higher bit depths and sample rates.
Corey Bailey Audio Engineering
On 11/22/2015 3:03 PM, L. Hunter Kevil wrote:
> A transfer of a 1960s tape marketed in a 24/96 wrapper is what? Doesn't the resolution of the tape correspond to the equivalent of an 8- or 12-bit word? If so, what does the wrapper do?