[Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs

I wonder if this has to do with the nature of whatever external audio amp/speaker or headphones you are using? You (as in your brain) can process signals below the noise often by several dB so I wonder if its related in some way to the interface between the radio and your ear and how 256

[Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs

Thanks Dale, Bob and Lee for your thoughts. I will be looking forward to separate DSP for transmit and receive. Dale, as I said in my original post, I use 2.4K filter but have tried many other filter widths. Yes, I have tried shifting the filter up/down with no discernible difference. Lee, I

Re: [Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs

Dave, in a left-handed way I just confirmed your observations. With the DSP buffer set to 2048, filters are very sharp and straight, 25 Hz setting only hears a small slice of one signal. With the DSP buffer set to 256, filter no longer has any real effect. I then hear artifacts (on CW) over

Re: [Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs

I gave a talk at CSVHF some years ago on Stochastic Resonance. Strictly prepared from reading about something I found interesting and not from any real experience or knowledge of the subject formally. At the same time, in Vienna happened to meet someone working on speech compression, etc. on the

[Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs

I work weak signal 6 meters on both SSB and CW. I have found that I can copy weak signals on SSB better with the DSP buffer set at 256. I do know that I cannot transmit using this DSP buffer (256) without distortion. (Skirt slope is too broad) I have listened to myself on an SDR remote base 20

Re: [Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs

To: FlexRadio@flex-radio.biz Subject: [Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs I work weak signal 6 meters on both SSB and CW. I have found that I can copy weak signals on SSB better with the DSP buffer set at 256. I do know that I cannot transmit using this DSP buffer (256) without

Re: [Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs

This is an extremely interesting observation and does merit further study. In theory, there should be no more insertion loss at the longer buffer lengths. I will run some tests and help figure this out. Bob Dave Nancy Ridge wrote: I work weak signal 6 meters on both SSB and CW. I have

Re: [Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs

Dave: I have talked to others who hear better when there is a little white noise outside of the desired range but my tests are conclusive. At 160 through 6 meters, the minimum discernible signal is within .2 dB of a fixed number at 256 point buffers through 4096 buffers. Irrespective of

Re: [Flexradio] Lower DSP Buffer for SSB Receiving Weak Sigs

(trying this again; an earlier post was refused by the list) Hello Dave, I'm curious what actual filter width were you using, and did you try shifting the filter up/down to achieve maximum intelligibility (while the skirt slope was at it's steepest)? I've found that shifting the filter to