Wow ... this discussion should be simulcast on the Enhanced SSB reflector...
Well, one of the approaches to kill the muddiness, is a technique that has been employed in recording/broadcasting over the years.. 1.- There is a magic spot in everybody's voice that will increase clarity and pull down the lo-mid darkness (Muddiness) ... its different in everybody's voice but can be found around 160 Hz .. use a narrow "Q" and an amplitude reduction of 6-8-10 dB. Throttle around 160 till you find your own personal spot.(mine is at 148) 2.- To increase the clarity, add 6-8-109 dB at 3730 Hz, now its not the 3720 we are concerned with ... its the magic 2d harmonic at 1865, with a long "Q". (You want clarity..here it is..!!) 3.- Now put a low end cut of 10 dB beginning at 65 Hz going down and a 6-8-12 dB high end cut at 3200 Hz going up. 4.- As a option for polish and fullness add 3-6 dB at 80 Hz with a sharp "Q"... and throttle for the sweet spot.... You would be surprised a the number of studio voices this trick of 160 and a 3720 harmonic saved from the cutting floor....!!!! -Bill [EMAIL PROTECTED] http://www.kc4pe.com/amateurshack.htm ----- Original Message ----- From: "Ahti Aintila" <[EMAIL PROTECTED]> To: "Jeff Anderson" <[EMAIL PROTECTED]> Cc: <flexradio@flex-radio.biz> Sent: Tuesday, June 03, 2008 5:37 PM Subject: Re: [Flexradio] The inherent muddiness of typical amateurtransceiver >>>> On 6/3/08, Brian C <[EMAIL PROTECTED]> wrote:> >>>> >>>>> That said, everyone knows wider bandwidths should not be employed on >>>>> very crowded amateur bands, nonetheless, the key to intelligibility >>>>> and fidelity is b a n d w i d t h. >>>>> > Hi all, > Actually, IARU recommends max. bandwidth of 2700 Hz on ham bands below > 28 MHz. If you obey the rules and don't want to drown the information > content of your transmission into the mud, you better equalize your > signal in a smart way. I apologize for referring again to these two > old and good articles that every phone (SSB) operator should read and > understand: > http://kotisivu.dnainternet.net/ahti/sdr-1000/filtclip.pdf > http://kotisivu.dnainternet.net/ahti/sdr-1000/speechproc.pdf > > Of course those articles discuss analog signal processing, but the > same ideas apply to the DSP radios as well - actually much better. > Study the TX equalizer and compressor setup possibilities of PowerSDR > of Flex and K3 of Elecraft. It is really a pity that the both > manufacturers have not given any recommended (default) SSB equalizer > settings along the principles discussed in the given articles. > > Ahti OH2RZ > > > _______________________________________________ >> 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://kb.flex-radio.com/ Homepage: >> http://www.flex-radio.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://kb.flex-radio.com/ Homepage: > http://www.flex-radio.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://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
