From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: vxpocket v2 full duplex latency with ALSA driver? Date: Mon, 10 Mar 2003 14:31:19 +0100 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: References: <1047069836.3627.42.camel@localhost.localdomain> Mime-Version: 1.0 (generated by SEMI 1.14.4 - "Hosorogi") Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: <1047069836.3627.42.camel@localhost.localdomain> Errors-To: alsa-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: jfm3 Cc: alsa-devel@lists.sourceforge.net, alsa-user@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org At 07 Mar 2003 15:43:55 -0500, jfm3 wrote: > > The ALi M5451 sound card in my laptop blows chunks in full duplex. I > have a question for vxpocket v2 + ALSA users. > > Reports are that the windows driver for the vxpocket v2 yeilds high > latency when used full duplex. Is there a similar problem with the ALSA > driver? Is it really a driver problem or is it a hardware problem? What > kind of card latency is there? the ALSA uses the smallest IBL size (i.e. the capture latency) as default. this is the limitation for the single capture mode. in the case of full-duplex, you'll get as enough fine resolution of interrupts as the playback setting because the playback interrupt is also used to update the capture stream, too. so, in theory, you should have no problem :) ciao, Takashi ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf