Emu XL-7 & MP-7 User's Group

Scott-

Thanks for the information. (digital out is 20-bit, 44.1kHz)

What happens to this signal at the receiver end? If the device 
says it supports 16-bit conversion, can it read the 20-bit data?

If the device supports 24-bit conversion, does it translate the 20-
bit data to 24-bit depth?

I'm not sure how to get these settings right, especially with the 
two pieces of equipment that I need it for: the Emagic EMI 2|6 
USB interface (which supports 16 or 24 bit) and the Yamaha 
AW2816 (which also supports 16 or 24-bit.) There is no 20-bit 
setting for these, that I know of.

I will need to check with the manufacturers for help on this.

-Forneau


--- In xl7@y..., Scott Ruda <scottr@e...> wrote:
> 
> On Monday, May 20, 2002, at 05:24  PM, forneau wrote:
> 
> > I'm disappointed that this basic information (sample rate, bit
> > depth) is not mentioned in any Emu documentation. Every 
other
> > piece of equipment I have with digital I/O capability clearly 
states
> > this information.
> 
> It's 20 bit, 44.1kHz. Note that this information is essentially 
encoded 
> into the signal, so a receiver should be able to auto-detect the 
format 
> without user intervention. But if your receiver requires you to set 
this 
> information manually, now you have the information you need.
> 
> 
> > Maybe the digital out is like the USB port: not actually 
functioning
> > until a later OS. Or, maybe it's just broken in my machine.
> 
> The SPDIF has been working since day one of shipment. Many 
people are 
> using it with great success. Note also that USB is now 
functional with 
> Windows drivers - Mac drivers are due late summertime. See 
the E-Loader 
> 1.1 information at the E-mu website: 
> <http://www.emu.com/support/eloader.html>
> 
> We have seen that some receivers have troubles with 
receiving SPDIF 
> well. The basic problem with SPDIF is that it is very difficult to 
> supply it and still have the unit pass FCC radiation emission 
> requirements. So, unfortunately, the signal must be clamped 
down to a 
> value needed to meet legal FCC emissions levels, but  it still 
meets the 
> SPDIF spec. There are electrical hacks that can be done to the 
output 
> circuitry to make the signal stronger, but we can't legally sell 
the 
> product that way. If your receiver is having trouble, you might 
consider 
> either a different receiver that is more sensitive, or finding a 
tech 
> that is competent (and willing) to try doing the electrical 
> modifications. Note that doing this can cause noise problems 
with other 
> equipment in your studio (besides being illegal ;-). Contact me 
offline 
> if you are considering this alternative.
> 
> Scott