Message-ID: <001f01bfc660$aebac8e0$7a5197d4@win95.swipnet.se>
From: "C Andersson" <sm6pxj@swipnet.se>
To: "RSGB LF group" <rsgb_lf_group@blacksheep.org>
Subject: LF: Re: Binaural Stereo and Dichotic Detectors
Date: Thu, 25 May 2000 17:47:28 +0200
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Hello all,

I read in the general summary in the SM7CMY report:

"It was found that:
- The ability to recognize telegraphy masked by noise decreases with increasing telegraphy speed;
- A low frequency improves recognition. There is a hearing level for best recognition;
- Best recognition is obtained with the telegraphy signs 180 degrees out of phase between the ears with the masking noise in phase;
- In hearing-impaired telegraph operators, the critical bandwidth is affected but not the phase phenomena;
- A human telegraph operator outperforms the electronic decoders at low signal-noise ratios;
- Detection of trains of tone pulses masked by noise improves when the duration of the tone pulses is increased and when the duration of the gaps between the tone pulses is decreased. Thresholds of trains of pulses can be predicted  by a formula that accounts for the total energy in the train."

I have been in touch with the author and he is positive to publishing the material on the www.
There are 120 pages to scan in case the original files are not available.

/Regards
Christer
sm6pxj