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- Path: sparky!uunet!gatech!news.ans.net!cmcl2!adm!news
- From: okada@av2.avrl.mei.co.jp (Tsuyoshi Okada)
- Newsgroups: comp.sys.sgi
- Subject: Re: Audio Format
- Message-ID: <34638@adm.brl.mil>
- Date: 14 Dec 92 09:08:34 GMT
- Sender: news@adm.brl.mil
- Lines: 23
-
- Bruce Karsh (karsh@sgi.com) wrote:
- : The A/D and D/A convertors are both 16 bit convertors. The AES/EBU
- : digital audio interface is a 24 bit format. These formats are all
- : linear PCM.
-
- I'm sure you meant that D/A converters have 18-bit resolutions
- as mentioned in "relnotes eoe 13" in 4.0.5F.
-
- Now, I figured DSP56001 for audio interface control handles 24-bit
- audio data with digital I/F, and 16/18 bits of them with analog I/F.
- Is the rest of the lower bits simply masked to zero when transferring
- a 16-bit A/D data to GIO-Bus or digital I/F, and when supplying 24-bit
- AIFF data to 18-bit D/A converter?
- Is there any chance to upgrade the A/D and D/A converter to a higher
- resolution considering that there are such as high as 20-bit reso.?
-
- What about the new machine with R4400? Is the audio interface going
- to be the same with Indigo using 56001?
-
- Thanx in advance.
- --
- || Tsuyoshi Okada Matsushita Electric Industrial Corp. ||
- || T.Okada@avrl.mei.co.jp Audio & Video Res. Lab. (Japan) ||
-