New Audigy 2 - 24/192Khz - Page 3

halcyon · 25th November 2002, 08:33 PM

turtle,

but Audigy (1 and 2 both) has Firewire out

Not that you can use it for DVD-A digital output (at least not yet) AFAIK.

I knew you meant this, but I needed to clarify so others would not misunderstand it.

regards,
Halcyon

johan · 25th November 2002, 09:19 PM

Quote:

From what I've read, it doesn't relly matter that the audigy 2 disables spdif out when playing dvd audio, as spdif doesn't have the bandwidth to do dvd-a anyway

From what I know, S/PDIF does not limit what you send through it. It is always possible to send raw audio data through it. The cable does not care what information it delivers. Then it is another thing if there are receivers capable of decoding the signal. An expensive DAC is needed

UrSv · 25th November 2002, 09:33 PM

Quote:

Originally posted by halcyon
turtle,

but Audigy (1 and 2 both) has Firewire out

Not that you can use it for DVD-A digital output (at least not yet) AFAIK.

I knew you meant this, but I needed to clarify so others would not misunderstand it.

regards,
Halcyon

OR it could be possible already:

http://www.1394ta.org/Press/2002Pres...er/9.23.ti.htm

/UrSv

johan · 26th November 2002, 09:46 AM

Have to correct myself a bit.

The original S/PDIF standard states:

Audio format : linear 16 bit default, up to 24 bit expandable
Allowed sampling frequencies (Fs) of the audio:
44.1kHz from CD
48 kHz from DAT
32 kHz from DSR

Now manufacturers are already using 24 bit 96 kHz without problems, because there are no limitations in the S/PDIF interface for higher sampling frequencies. I don't see why not 192 kHz could be used. It is just a matter of higher bitrates and getting the right chips.

Note that the professional balanced AES/EBU interface can not without problem use 24 bit, because it uses some bits for other information. This is not the problem with the consumer S/PDIF interface.

jgwinner · 26th November 2002, 04:19 PM

Johan:

Are the higher bitrates part of an amended spec?

The bit format might be able to carry the non-spec information, but does the bandwidth of the connection itself allow that? (I don't know, I'm asking). With the amount of data you're talking about, it's a lot of bandwidth.

tiroth · 26th November 2002, 04:43 PM

AFAIK there are no 192kHz SP/DIF recievers.

johan · 26th November 2002, 08:58 PM

No, I don't really know. Of course it is out of the original spec to run for instance 96 kHz, but that is exactly what a lot of PC sound card manufacturers are allowing.

UrSv · 26th November 2002, 09:19 PM

I don't know any of this stuff really but what is the Sanyo receivers we read about (check LC89055W):

http://www.semic.sanyo.co.jp/solution/vrs/vrs_dir_e.htm

Or (CS8416):

http://www.cirrus.com/design/product...ail.cfm?d=1005

Aren't those 192 kHz SPDIF receivers?

/UrSv

Pjotr · 26th November 2002, 09:59 PM

Hi,

My M-audio superdac works pretty well at 24bit/96khz connected to an Audiophile 2496 pc card with standard 75 ohm 5 mm CATV coax. As far as I now all M-Audio stuff uses native sample rates, no resampling at all. Only standard oversampling.

But why do you want 192kHz? There are no standard software carriers for it except your harddisc.

johan · 27th November 2002, 10:29 AM

What do you mean with "standard software carriers"? DVD-Audio is a standard and it supports 192kHz.

26th November 2002, 04:19 PM	#25
jgwinner diyAudio Member Join Date: Mar 2002 Location: Torrance, CA	Johan: Are the higher bitrates part of an amended spec? The bit format might be able to carry the non-spec information, but does the bandwidth of the connection itself allow that? (I don't know, I'm asking). With the amount of data you're talking about, it's a lot of bandwidth. __________________ == John ==

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25th November 2002, 08:33 PM	#21
halcyon diyAudio Member Join Date: Apr 2002	turtle, but Audigy (1 and 2 both) has Firewire out Not that you can use it for DVD-A digital output (at least not yet) AFAIK. I knew you meant this, but I needed to clarify so others would not misunderstand it. regards, Halcyon

26th November 2002, 09:46 AM	#24
johan diyAudio Member Join Date: Sep 2001 Location: Finland, Ostrobothnia	Have to correct myself a bit. The original S/PDIF standard states: Audio format : linear 16 bit default, up to 24 bit expandable Allowed sampling frequencies (Fs) of the audio: 44.1kHz from CD 48 kHz from DAT 32 kHz from DSR Now manufacturers are already using 24 bit 96 kHz without problems, because there are no limitations in the S/PDIF interface for higher sampling frequencies. I don't see why not 192 kHz could be used. It is just a matter of higher bitrates and getting the right chips. Note that the professional balanced AES/EBU interface can not without problem use 24 bit, because it uses some bits for other information. This is not the problem with the consumer S/PDIF interface.

26th November 2002, 04:43 PM	#26
tiroth diyAudio Member Join Date: Dec 2001 Location: Pittsburgh, PA, USA	AFAIK there are no 192kHz SP/DIF recievers.

26th November 2002, 08:58 PM	#27
johan diyAudio Member Join Date: Sep 2001 Location: Finland, Ostrobothnia	No, I don't really know. Of course it is out of the original spec to run for instance 96 kHz, but that is exactly what a lot of PC sound card manufacturers are allowing.

26th November 2002, 09:19 PM	#28
UrSv diyAudio Member Join Date: Jan 2002 Location: Sweden	I don't know any of this stuff really but what is the Sanyo receivers we read about (check LC89055W): http://www.semic.sanyo.co.jp/solution/vrs/vrs_dir_e.htm Or (CS8416): http://www.cirrus.com/design/product...ail.cfm?d=1005 Aren't those 192 kHz SPDIF receivers? /UrSv

26th November 2002, 09:59 PM	#29
Pjotr diyAudio Member Join Date: Nov 2002 Location: Netherlands	Hi, My M-audio superdac works pretty well at 24bit/96khz connected to an Audiophile 2496 pc card with standard 75 ohm 5 mm CATV coax. As far as I now all M-Audio stuff uses native sample rates, no resampling at all. Only standard oversampling. But why do you want 192kHz? There are no standard software carriers for it except your harddisc.

27th November 2002, 10:29 AM	#30
johan diyAudio Member Join Date: Sep 2001 Location: Finland, Ostrobothnia	What do you mean with "standard software carriers"? DVD-Audio is a standard and it supports 192kHz.