Hello Duddley and thank you for this explanation i try to look on the manue pdf but cant see it , now i have it gerat thank you
E.P --- On Tue, 5/1/10, Dudley Hurry <jhu...@austin.rr.com> wrote: From: Dudley Hurry <jhu...@austin.rr.com> Subject: Re: [Flexradio] what is cpdr do ? To: "elan paim" <paimg0...@btinternet.com> Cc: flexradio@flex-radio.biz Date: Tuesday, 5 January, 2010, 4:02 Elan, As clipped from "Introduction for Configuring PowerSDR 1.x for Optimum Voice Transmission " http://kc.flex-radio.com/KnowledgebaseArticle50139.aspx Transmit Compander PowerSDR uses audio compression to make quite sounds louder-the difference, in decibels, between the loudest and the quietest portion of the audio input, i.e., its dynamic range. There’s a down side also, it can make unwanted sounds, like breath sounds, also louder. More is not necessarily better. A good starting point is 3 db. Rarely will one need to increase compression above 10 db. If you’re a soft spoken person, consider operating with the Compander on all the time. Companding is also very effective on AM. The choice of microphone will play heavily in the compressor settings. The compander is used to overcome limited dynamic range in one portion of an audio system. In amateur radio applications this is typically the high frequency response. The compander is both a compressor and a high frequency expander. An ideal setting for the compander is level 3. There is a DX version of the Compander which has a higher compression ratio for more "punch", such as trying to bust a DX pileup. 73, Dudley WA5QPZ elan paim wrote: > is any one can tell me what the cpdr do and how it work ? > thank you > > E.P > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > Message delivered to jhu...@austin.rr.com > > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
