From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from joana.gotss.net ([203.53.231.66] ident=mail) by speech.braille.uwo.ca with esmtp (Exim 3.35 #1 (Debian)) id 17B8vh-0007Gf-00 for ; Fri, 24 May 2002 02:52:02 -0400 Received: from kerry by joana.gotss.net with local (Exim 3.12 #1 (Debian)) id 17B8vd-0005Ep-00 for ; Fri, 24 May 2002 14:51:57 +0800 Date: Fri, 24 May 2002 14:51:57 +0800 To: speakup@braille.uwo.ca Subject: Re: interesting experiment. Message-ID: <20020524145157.E19839@joana.gotss.net> References: <003101c2029d$627d6020$fa0a9718@nt.charterne.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <003101c2029d$627d6020$fa0a9718@nt.charterne.com>; from alex_snow@gmx.net on Thu, May 23, 2002 at 05:04:04PM -0400 From: Kerry Hoath Sender: speakup-admin@braille.uwo.ca Errors-To: speakup-admin@braille.uwo.ca X-BeenThere: speakup@braille.uwo.ca X-Mailman-Version: 2.0.9 Precedence: bulk Reply-To: speakup@braille.uwo.ca List-Help: List-Post: List-Subscribe: , List-Id: Speakup is a screen review system for Linux. List-Unsubscribe: , List-Archive: There were pc-speaker sound drivers for Linux, but the cpu overhead was awful. To run the speaker you need to use one of the timers on the 8259 and there is no ability to use interrupts or dma so you must sit in busy wait loops to get the timing correct. You need to convert pcm to pwm and feed it to the speaker and we don't even have a free software speech engine for Linux yet that is of good enough quality and stability and responsiveness for the applicaiton we want. Let's be realistic, most modern boards have soundcards on them, and something half decent can be had for $10US so gone are the days of pc-speaker and parallel port dongles for sound. Most modern laptops even have soundcars in them. The lack of sound drivers at boot isn't hte problem for speakup, it is that a tts engine takes up a hell of a lot of kernel memory which then isn't swapable. On Thu, May 23, 2002 at 05:04:04PM -0400, Alex Snow wrote: > Hi All, > I was just thinking: Would it be possible to right drivers to use the pc > speaker as a synth in speakup? Then for those who don't have a hardware > synth that would work. > ----- Original Message ----- -- Kerry Hoath: kerry@gotss.net kerry@gotss.eu.org or kerry@gotss.spice.net.au ICQ: 8226547 msn: kerry@gotss.net Yahoo: kerryhoath@yahoo.com.au