From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mandar Joshi Subject: Creative X-Fi USB 5.1 Driver Date: Tue, 3 Feb 2009 20:36:15 -0800 (PST) Message-ID: <531396.7445.qm@web35601.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from web35601.mail.mud.yahoo.com (web35601.mail.mud.yahoo.com [66.163.179.140]) by alsa0.perex.cz (Postfix) with SMTP id 1846A103875 for ; Wed, 4 Feb 2009 05:36:16 +0100 (CET) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: "alsa-devel@alsa-project.org" List-Id: alsa-devel@alsa-project.org Hello, I was reading the USB Audio Specs from http://www.usb.org/developers/devclass_docs The document talks about Effect Unit Descriptors and few other descriptors.There is no mention of such descriptors in the 'lsusb -v' output for the USB X-Fi 5.1 Does this mean thet the X-Fi,Crystalizer features of the USB X-Fi are implemented purely in software? Here is a link to the lsusb output http://mndar.phpnet.us/usbxfi/files/creative.txt The document "Audio20 final.pdf" also mentions that bDeviceClass, bDeviceSubClass and bDeviceProtocol should have values 0xEF, 0x02, and 0x01 respectively but in the 'lsusb -v' output all three values are 0. Any idea why it is so? Regards Mandar Joshi