What determines the audio quality of a variable-density optical audio track?

What determines the audio quality of a variable-density optical audio track?

Hi:

Variable-density was used to record sound into the those old B&W films
before variable-area was invented.

What characteristics in the film material itself [e.g. the chemicals
within the film, "grains", etc. etc.] determines the audio quality [e.g.
the bandwidth, dynamic range, SNR, clipping point, treble response, etc.
etc.] of a VD track?


Thanks,

Radium

Re: What determines the audio quality of a variable-density optical audio track?

"Green Xenon [Radium]" wrote ...
> Variable-density was used to record sound into the those old B&W films
> before variable-area was invented.
>
> What characteristics in the film material itself [e.g. the chemicals
> within the film, "grains", etc. etc.] determines the audio quality
> [e.g. the bandwidth, dynamic range, SNR, clipping point, treble
> response, etc. etc.] of a VD track?

It was thoroughly researched and published before you
were born. Look it up yourself if you are so interested in it.
The rest of us have moved on. Suggest you do the same.