[sdiy] Re: Inexpensive 16 bit DAC?

[Gabriel Lindeborg]

The D-50 is digital only (no analog filters other then fixed ones at the 
output), and I believe the samples are 8-bit. LA-synthesis uses samples, 
digital oscillators, ring-modulation and digital filters all in the 
digital domain. The reverb and chorus are also digital, and propably the 
reason for the 20-bits of the output DAC.

//Gabbe

Mete BALCI wrote:

> 20-bit DAC in D-50, I dont know that. What is that for
> ? Do you think it is really needed or just for
> marketing purpose ?
> 
> As I know D-50 is an hybrid (analog filters) with
> 16-bit samples, does it use its DAC immediately after
> the pcm wave generation ? If so, why is there a need
> for 20-bit DAC for 16-bit samples ? Does its internal
> processing is greater than 16-bit ?
> 
> Mete
> 
> --- Jaroslaw Ziembicki <aon.912230836 at aon.at> wrote:
> 
>>Around 1985, I would say. The 16 bit Burr-Brown chip
>>PCM54
>>(parallel inputs) was widely used.
>>In the Roland D-50 synthesizer there was a PCM54
>>plus an
>>additional resistor network to get a 20 bit
>>resolution.
>>
>>Regards, Jarek
> 
>