On 10/18/2017 9:03 PM, Don Wilhelm wrote:
The voice audio needs some information in the 300 to 400 Hz region for clarity, so the LO CUT must be set in the 200 to 400 Hz range to keep intelligibility.
I disagree. Audio below about 400 Hz makes VERY little contribution to speech intelligibility. The 1 kHz, 2 kHz, and 4 kHz octave bands are where the action is. Sound below 400 Hz provides "body" to the voice and "thickens" it. It can more pleasing to listen to, but it also burns transmitter power. So if the goal is communications, power is better devoted to those higher bands.
73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
