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From: root@dialog.stgt.sub.org (Christian Motz)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Amigas shipping with 16-bit audio?
Message-ID: <2261@dialog.stgt.sub.org>
Date: 25 Jul 90 18:05:50 GMT
References: <1990Jul14.173215.25433@ux1.cso.uiuc.edu> <5958@hub.ucsb.edu> <1990Jul15.215912.25094@funet.fi> <7891@lynx.UUCP> <1383@wet.UUCP>
Sender: uucp@dialog.stgt.sub.org
Reply-To: root@dialog.stgt.sub.org (Christian Motz)
Organization: Dialog Software Development
Lines: 24

In article <1383@wet.UUCP> nut@wet.UUCP (adam tilghman) writes:
>>>Have somebody done direct sampling from harddisk yet?
>>
>>
>  There are at least two direct-to-disk sample recorders for the Atari ST,
>and seeing that the ST and the Amiga are not too different, I would assume
>that it is entirely possible on the Amiga.  According to several reviews and
>ads, these samplers are able to keep up with four-channel CD-quality sound
>(math works that out to be around 176Khz).  But you had better have a
>_REALLY BIG_ hard disk to do any type of large-scale sampling with that
>beast (only 400 Seconds == 6.75 minutes on a 1Gb drive!)

This is probably the reason why CD's only play 4 Minutes, is  it?  ;-)
Uhmmm, perhaps you should re-check your math. Now  let' s  see ...  we
have 44 kHz sampling frequency, which leaves  us  with  44000  16- Bit
words every second. Double that, since we want to have  stereo  sound,
right? Ok, that makes up 176000 bytes per second,  or  10560000  bytes
per minute. That's almost exactly 10 MBytes  per  minute,  leaving  us
with about 600  MBytes  per  hour.  Does  this  value  strike  you  as
familiar? Surprise!!!! It's  the  average  capacity  of  the  standard
Compact Disc ...

--
Christian Motz                                root@dialog.stgt.sub.org