On Sun,1/25/2015 5:20 AM, Gary - NC3Z wrote:
In my opinion much, much better words should of been choose than "seriously misguided", they have connotations that one is an idiot. Seriously misguided would be trying to run a 12V device off 120V.
Why? If an idea is seriously misguided, saying so is entirely appropriate. I did not expand on the advice because this is an email reflector dedicated to Elecraft radios, not microphones.
There are (at least) three reasons why an array of microphones is a really bad idea. First, really good sounding mics to work with our radios are widely available cheap. Second, a microphone is an electroacoustic device -- it collects sound at a point in space and converts it to voltage. A microphone at a different point in space collects different sound -- there is a difference in time between those sounds, which results in a difference in phase. The difference in phase results in peaks and dips in the frequency response, which in the audio world is called comb filtering. Third, one mic loads another electrically, degrading the performance of each.
Third, those of us working in pro audio learned a long time ago that one mic feeding a single channel is always better than one for picking up a single sound source like the human voice. Putting more of them in parallel does not make them work better.
When you see two mics on either side of a podium, it's an indication that whoever put them there didn't understand that. As the talker moves side to side, the sound of his/her voice changes due to the cancellation. Almost 40 years ago, I did a couple of big outdoor sound reinforcement gigs for the President, and the White House sound engineers DID understand that -- they studied at the same workshops that I did. They had Shure build a special mic for them with three capsules in it, each coming out on their own shielded twisted pair. Two went to me, the second was for redundancy -- in case wiring for the first one failed. Each went to a different input of my mix console. The third went to them for their recording.
73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
