From: Aaron Lehmann <aaronl@vitelus.com>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Open hardware wireless cards
Date: Fri, 7 Jan 2005 02:37:50 -0800 [thread overview]
Message-ID: <20050107103750.GF3228@vitelus.com> (raw)
In-Reply-To: <1105034339.24896.228.camel@localhost.localdomain>
On Thu, Jan 06, 2005 at 05:59:01PM +0000, Alan Cox wrote:
> Audio is easy. Good audio is rocket science. You can roll yourself a USB
> audio interface with a microcontroller and a codec ic. Getting that to
> give you a really good signal/noise ratio is then rather trickier.
Actually you don't even need a microcontroler: use an IC like the TI
PCM2902 (http://focus.ti.com/docs/prod/folders/print/pcm2902.html). I
built a headphone amplifier that uses one and I'm very pleased -
especially because there's digital passthrough for my speakers via
S/PDIF. The quality is nothing special, but you can always
plug a high-end codec into the S/PDIF I/O. I saw a schematic
somewhere that used the PCM2902 as the USB-audio interface along with
a high end DAC. However if you need more than 16 bits and 48kHz you
might need to make something more fancy.
next prev parent reply other threads:[~2005-01-07 10:37 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20050105192447.GJ5159@ruslug.rutgers.edu>
2005-01-05 20:05 ` Open hardware wireless cards Luis R. Rodriguez
2005-01-05 20:14 ` Lennart Sorensen
2005-01-05 20:48 ` linux-os
2005-01-05 21:35 ` Lennart Sorensen
2005-01-05 21:09 ` Tomasz Torcz
2005-01-08 20:47 ` Adrian Bunk
2005-01-09 9:59 ` Norbert van Nobelen
2005-01-09 22:28 ` Bernd Petrovitsch
2005-01-09 23:00 ` Alan Cox
2005-01-05 20:17 ` Raphael Jacquot
2005-01-05 20:26 ` Luis R. Rodriguez
2005-01-06 8:02 ` Norbert van Nobelen
2005-01-06 17:24 ` Luis R. Rodriguez
2005-01-06 17:37 ` Lee Revell
2005-01-06 17:38 ` Luis R. Rodriguez
2005-01-06 17:42 ` Lee Revell
2005-01-06 19:06 ` Norbert van Nobelen
[not found] ` <1105044024.15770.7.camel@krustophenia.net>
2005-01-06 20:51 ` Norbert van Nobelen
2005-01-06 17:59 ` Alan Cox
2005-01-06 20:25 ` Lee Revell
2005-01-07 10:37 ` Aaron Lehmann [this message]
2005-01-06 19:11 ` Raphael Jacquot
2005-01-06 19:32 ` Norbert van Nobelen
2005-01-06 21:00 ` Lee Revell
2005-01-06 21:24 ` Lennart Sorensen
2005-01-06 21:39 ` Jim Nelson
2005-01-06 21:42 ` Norbert van Nobelen
2005-01-08 11:58 ` Paul Jakma
2005-01-06 21:43 ` Christoph Hellwig
2005-01-05 20:22 ` [Prism54-users] " Steve Hill
2005-01-05 20:36 ` Luis R. Rodriguez
2005-01-05 22:19 ` christos gentsis
2005-04-19 19:07 ` Karel Kulhavy
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