On Mon, 30 Nov 2009 09:53:35 +0000 (GMT), Jim Lesurf
wrote:

In article , Bob Latham
wrote:
In article , Jim Lesurf
wrote:

I'm interested as I'd like a recorder than can work with up to
192k/24bit, play as well as record, and record longer than an hour or
two. Want to use something like this for various purposes.

I hope this doesn't come across as being sharp or whatever its not
intended.

Why do wish to record at 192k/24bit when I thought the wisdom you signed
up to was that 44.1K/16bit was transparent to human hearing?

The plan is that a new recorder would have multiple uses.

One use would be to make recordings for analysis purposes. e.g to look at
distortion products above 22kHz. So, for example, to check out things like
how DACs fare with the 'waveform from hell' which was discussed a while
ago.

Or to measure the behaviour of amplifiers, speakers, etc, etc, above 22kHz.

I already have recorders that work well for 44/16 purposes and have been
happy to use them to make recordings onto CDR. But they would not be
adequate for purposes like the above.


To keep you amused while you wait, here's the response of my old Alpha
9 captured at 96kHz 24 bits (that's the best I can do).

First the spectrum. I used a linear frequency scale for obvious
reasons

http://www.soundthoughts.co.uk/look/highharm.png

and the second a close up of the clipped region

http://www.soundthoughts.co.uk/look/clipped.png

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