Date: Wed, 31 Mar 1999 11:49:53 -0500 From: Chip Marshall <cmarshall@expi.com> To: Bertrand Petit <elrond@phoe.netdev.net> Cc: freebsd-small@freebsd.org Subject: Re: MP3 playing PicoBSD Message-ID: <19990331114953.A16012@expi> In-Reply-To: <19990330135615.A22066@phoe.netdev.net>; from Bertrand Petit on Tue, Mar 30, 1999 at 01:56:15PM %2B0200 References: <19990329141738.A12556@expi> <Pine.BSF.4.05.9903292236070.18638-100000@freja.webgiro.com> <19990330135615.A22066@phoe.netdev.net>
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On Tue, Mar 30, 1999 at 01:56:15PM +0200, Bertrand Petit wrote: > The difficult part in this project is the hardware. As the aim > is to build an audio playing unit, the harware must be conceived such > that there is no need for cooling at all. Could modern processors be > underclocked enough so that no fan is required? Maybe a big heat sink > could do. The power source also must bear the absence of fan. These points were brought up in Fromme's discussion of the project, and I believe that a low-end AMD K5 would provide enough power to decode MP3, but not generate all the much heat. Also, since the only things in the box are the mboard, CD-ROM, and a sound card (and maybe an ether card) a very small power supply would do. But these are pretty much the same conclusions that Fromme came to, only I think his plan was with a Pentium 90. > Another big issue is the digital to analogue converter. One > could not use average PC soundcard as they are poorly shielded if > shielded at all. I think the lambda sound cards rate as low-fi. I hadn't really given much thought to this. I was just planning on using an old SB16 I had lying around. It there a way to improve shielding on these? -- Chip Marshall <cmarshall@expi.com> Exploration Physics International, Inc. Internet Technology Programmer http://www.eboai.org/~chip/ InterNIC handle - CLM21 PGP key available on my web page On IRC via EFnet as Magus To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-small" in the body of the message
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