Date: Wed, 27 Mar 2002 11:35:31 From: "neil barnes" <[EMAIL PROTECTED]> Subject: Re: AW: [LIB] Has no one played with recording audio?
>Date: Wed, 27 Mar 2002 10:19:38 +0100 >From: "Gerhard Kapusta" <[EMAIL PROTECTED]> >Subject: AW: [LIB] Has no one played with recording audio? > >Hi Matt! > >Iv' tryed it, but without success. > >The internal sound does not meet my high demand of quality. >PCMCIA soundcards are rare and very expensive. >So I bought a EgoSys U2A, this is an excellent external soundcard with >USB-Connection. > >Playback is ok, but for recording a Lib110 with Win2000 is too slow. The >problem seems to be not the transfer rate of the disk, but the processor >speed. Or indeed, the MS windows overhead. As I've mentioned in the past, I did extensive tests of PCMCIA sound cards about four or five years ago (for the company, which is why I can't comment) but we had satisfactory recordings on 486DX100 machines with 16M ram. The data exchange rate is only 1.4Mbps for 44.1k sampling stereo sixteen bit. The pcmcia interface can handle twice that, and the cardbus *lots* more. I suspect the real-mode thunking that win2k does to isolate the user from the hardware is responsible for the slowdown... I'm assuming here that you're recording straight PCM and not encoding to MP2 or MP3 in real time - for that, I think you'd have a problem with 233MHz. Neil _________________________________________________________________ Join the world�s largest e-mail service with MSN Hotmail. http://www.hotmail.com ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
