Re: [Elecraft] K2 K3 (ssb)
Hi Trevor, thanks for that. This is an interesting programme, particularly for those without on-board processing, but I was hoping there was a way of evaluating a processed speech pattern without having to listen to it, ie completely objectively. Let's say I have a defect in my hearing (who doesn't have something lacking at our age?) how do I know that I have optimised my own transmitter for my own voice? Listening to my own voice is fraught with variabilities, I might just have a head cold that day or wax in my ears and apply too much boost to the hf end, for instance. The Vshaper is good for showing the spectrum, but speech intelligibility is not discernable from that spectrum. If you have the ARRL Handbook for 1988, the first page of Chapter 7 gives clues but not enough to go on for me. 73 David G3UNA David said: I just imagine that there is somewhere a reference that will help identify those bits of the display which contribute most to clarity and make it easy and more Is this of any use as an analytical tool http://www.dxatlas.com/VShaper/ Trevor G0KTN ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 K3 (ssb)
David said: I just imagine that there is somewhere a reference that will help identify those bits of the display which contribute most to clarity and make it easy and more Is this of any use as an analytical tool http://www.dxatlas.com/VShaper/ Trevor G0KTN ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K2 K3 (ssb)
The technique I used to set the SSB settings on my K2 was like this. 1. Transmit into a dummy load. 2. Receive on a known good receiver (Drake 2B in my case). 3. Record the receiver output in a high fidelity recorder (Cakewalk). 4. Listen to the recording on studio headphones. This allowed me to hear how my voice my mic sound through my rig. I was able to vary the TX level in the recording to simulate S-9+ signals or S-5 signals so I could see how things shifted as the signal went down. It's important to record yourself since you can't hear your own voice well at all if you're talking at the same time. - Keith N1AS - - SKCC 344c - -Original Message- David, You bring up a good point - how we actually sound to others is not necessarily how we perceive ourselves. Here is the alternative that I use: ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 K3 (ssb)
David, You bring up a good point - how we actually sound to others is not necessarily how we perceive ourselves. Here is the alternative that I use: I have a good fidelity stereo system in the hamshack, and also have a recording of a male speaking voice (from a book on 'tape'). I play the recording on the stereo and hold the microphone close in front of the speaker while listening to the K2 on a separate receiver. A talk radio program can also provide a source speaking voice. The major drawback for this method is that just any sort of speaker will not do the job - if the speaker is not of above average quality, it will color its output and the microphone will receive a distorted sound. I have also used this same method to evaluate various microphones for communications clarity. 73, Don W3FPR David Cutter wrote: Listening to one's own speech via another receiver, to optimise one's own transmit settings still gives a subjective result, *on average*, no better than another radio listener. Inevitably, it will be a question of personal taste, unless you have special training. It is true that radio amateurs are self trained to pick out particular words and phrases in contest or noisey conditions, but, is there no better way to make adjustments independent of taste and personal judgement? eg speaking standard words to record speech spectrograms. Can these be used to determine clarity? David G3UNA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 K3 (ssb)
Don I'm really trying to get away from any listening done by ourselves and substitute an instrument = spectrogram. I just imagine that there is somewhere a reference that will help identify those bits of the display which contribute most to clarity and make it easy and more effective to adjust our filters accordingly. We would speak a set number of words for comparison and adjust for best fit. Fidelity is not an issue. In machine speech, this would be easy to optimise, but if we use voice keyers, those stock phrases could be perfectly adjusted for maximum punch. David G3UNA David, You bring up a good point - how we actually sound to others is not necessarily how we perceive ourselves. Here is the alternative that I use: I have a good fidelity stereo system in the hamshack, and also have a recording of a male speaking voice (from a book on 'tape'). I play the recording on the stereo and hold the microphone close in front of the speaker while listening to the K2 on a separate receiver. A talk radio program can also provide a source speaking voice. The major drawback for this method is that just any sort of speaker will not do the job - if the speaker is not of above average quality, it will color its output and the microphone will receive a distorted sound. I have also used this same method to evaluate various microphones for communications clarity. 73, Don W3FPR ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 K3 (ssb)
Listening to one's own speech via another receiver, to optimise one's own transmit settings still gives a subjective result, *on average*, no better than another radio listener. Inevitably, it will be a question of personal taste, unless you have special training. It is true that radio amateurs are self trained to pick out particular words and phrases in contest or noisey conditions, but, is there no better way to make adjustments independent of taste and personal judgement? eg speaking standard words to record speech spectrograms. Can these be used to determine clarity? David G3UNA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
