From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clemens Ladisch <clemens@ladisch.de>
Subject: Re: Roland V-Studio 20
Date: Fri, 14 Feb 2014 20:07:56 +0100
Message-ID: <52FE698C.5080501@ladisch.de>
References: <8010247.EC2u5T8PMU@kamdesktop>
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To: "Keith A. Milner" <maillist@superlative.org>
Cc: alsa-devel@alsa-project.org
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Keith A. Milner wrote:
> I've recently picked up a cheap Roland V-Studio 20 device. This is described
> in the product spec as supporting 24-bit, but it is appearing as 16-bit only.

How does it appear in /proc/asound/card*/stream0?

> Unfortunately, Roland seem to insist on their own proprietary descriptors,
> which I don't know how to decode, so I'm not sure whether this is genuinely a
> 24-bit interface that isn't being interpreted properly by snd-usb-audio, or
> whether it's marketing spin, and it's actually 16-bit.

> ** UNRECOGNIZED:  0b 24 02 01 02 03 18 01 44 ac 00
                                   ^^ ^^
                                   This is three bytes, 24 bits.


Regards,
Clemens