One thing that is very different in the SDR-1000/PowerSDR from Leiff's excellent article is that our final brick wall filter is AFTER all speech processing, including ALC. This means that it filters out most of the splatter before it ever gets amplified. I verified this on a spectrum analyzer yesterday at very high levels of processing and ALC compression. 73, Gerald
Gerald Youngblood, K5SDR President FlexRadio Systems 8900 Marybank Drive Austin, TX 78750 Ph: 512-250-8595 Email: [EMAIL PROTECTED] Web: www.flex-radio.com > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Paul Wade W1GHZ > Sent: Wednesday, February 08, 2006 10:46 PM > To: FlexRadio@flex-radio.biz > Subject: [Flexradio] Fwd: PowerSDR Beta Preview 13 has been Released. > > anyone thinking about ALC or speech processing should read > > "Speech Processing for SSB Transmitters" by Leif Asbrink, > SM5BSZ in the 4/2005 issue of DUBUS > > 73 > paul > > >Date: Wed, 08 Feb 2006 16:10:41 -0600 > >From: "Eric Wachsmann - FlexRadio" <[EMAIL PROTECTED]> > >Subject: [Flexradio] PowerSDR Beta Preview 13 has been Released. > >X-Originating-IP: [216.229.20.12] > >Sender: [EMAIL PROTECTED] > >To: <FlexRadio@flex-radio.biz> > >Reply-to: [EMAIL PROTECTED] > >Organization: FlexRadio Systems > >X-Mailer: Microsoft Outlook, Build 10.0.2627 > >X-BeenThere: FlexRadio@flex-radio.biz > >X-Antivirus: avast! (VPS 0606-2, 02/07/2006), Outbound message > >X-Antivirus-Status: Clean > >X-AntiAbuse: This header was added to track abuse, > > please include it with any abuse report > >X-AntiAbuse: Primary Hostname - www3.qth.com > >X-AntiAbuse: Original Domain - verizon.net > >X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] > >X-AntiAbuse: Sender Address Domain - flex-radio.biz > >X-Source: > >X-Source-Args: > >X-Source-Dir: > >X-Mailman-Version: 2.1.6 > >List-Post: <mailto:FlexRadio@flex-radio.biz> > >List-Subscribe: > > > ><http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-r adio.biz>, > > <mailto:[EMAIL PROTECTED]> > >List-Unsubscribe: > > > ><http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-r adio.biz>, > > <mailto:[EMAIL PROTECTED]> > >List-Archive: > ><http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz> > >List-Help: <mailto:[EMAIL PROTECTED]> > >List-Id: Flex Radio Users <flexradio_flex-radio.biz.flex-radio.biz> > >X-Antivirus: avast! (VPS 0606-2, 02/07/2006), Inbound message > >X-Antivirus-Status: Clean > > > >PowerSDR Beta Preview 13 has been Released. > > > >This release fixes the ALC problem. Please read the release notes > >carefully. Also, several good articles are linked below > about peak to > >average power ratio for the average male voice. > > > >Thanks to those of you that responded to Gerald's request > for bugs. We > >have a good list to work from now and will be working on > those issues > >before releasing v1.6.0. Please do not duplicate your > reports unless > >something about your original report has significantly > changed in this > >release (Preview 13). > > > > > >Eric Wachsmann > >FlexRadio Systems > > > > > >Download Installer: > >http://www.flex-radio.com/download_files/PowerSDR/Install/Pow erSDR_Beta > >_ > >v1.4.5_Preview_13.zip > > > >Source: > >http://www.flex-radio.com/download_files/PowerSDR/Source/Powe rSDR_Beta_ > >v > >1.4.5_Preview_13_Source.zip > > > >Release Notes: > >http://flex-radio.com/forums/viewtopic.php?t=1948 > > > >SSB Power Article: > >http://flex-radio.com/forums/viewtopic.php?p=6376#6376 > > > > > > > >_______________________________________________ > >FlexRadio mailing list > >FlexRadio@flex-radio.biz > >http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > >Archive Link: > >http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ > >FlexRadio Homepage: http://www.flex-radio.com > > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: > http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com >
