On 10/4/2010 11:13 AM, Rob May wrote: > I'll turn the compression up to 25.
That is the WRONG WAY to set compression. Rather, compression should be set using the COMPRESSION section of the K3's meter (the one that's to the left of the ALC indicator. Grant said: >Just guessing here, but 65 watts of "average" power out with 100 watts >peak must sound pretty awful .. You're absolutely right, Grant. Any good audio (or broadcast) engineer knows that speech has a peak-to-average ratio on the order of 24dB. That ratio can be reduced (using peak limiting and compression) by 10-14dB before it starts sounding bad. Broadcasters use VERY sophisticated signal processing systems to reduce that ratio by another 3-4 dB. Many years ago, I sold some of this gear to broadcasters. Cost was in the $5K range in the early80s. One of the common techniques is to split the spectruminto multiple frequency bands and process each band separately, then combine them. This only works with full bandwidth audio (that is, 20-20,000 Hz); the bandwidth we transmit would fit into one of those individually processed bands. 73, Jim Brown 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
