Re: What types of audio artifacts are specifically-associated with VDoptical tracks?

"Eeyore" <rabbitsfriendsandrelations@[EMAIL PROTECTED]
> wrote in
message news:480597C7.5508467B@[EMAIL PROTECTED]
> "Green Xenon [Radium]" wrote:
>
>> Hi:
>>
>> What types of audio artifacts are
>> specifically-associated with the variable-density
>> optical tracks of B&W films? What are these artifacts
>> caused by?
>
> Well, I imagine the sensitivity of the film to exposure
> and the reverse sensitivity of a photocell to light
> create a pretty non-linear transfer characteristic so
> plenty of distortion would result.

Film's response to light is logarithmic. One reason why variable area 
optical sound had so much attraction. Unfortunately, it had problems of
its 
own.