Re: W2IHY 8 band equalizer and EQ Plus

Posted by Bob McGraw - K4TAX on Apr 27, 2010; 12:23am
URL: http://elecraft.85.s1.nabble.com/W2IHY-8-band-equalizer-and-EQ-Plus-tp4959845p4965828.html

I said it before and written it before, good audio has to do with a good
mike and GOOD MIKE TECHNIQUE.  The best mike money will buy and poor mike
technique will result in poor audio.

We use noise gates in the professional audio studio to create special
effects.

The noise gate used on ham radio to eliminate blower noise is a false
since of secuirty for when the gate opens, along comes the noise with the
voice.  It only chops the noise in between words.  It is still there with
the voice.

73
Bob, K4TAX

> On Mon, 26 Apr 2010 16:18:01 +0000, Lance Collister wrote:
>
>> It very effectively cuts out the background blower noise
>
> Some of the major causes of audible background noise are 1) working too
> far from the mic; 2) running the mic gain too high; 3) using too much
> compression/processing; and 4) not rolling off the low frequencies.
>
> In a noisy environment, it always helps to work close to the mic. It is
> ALWAYS good practice to use the minimum mic gain needed to get good
> modulation, use no more than about 10dB of compression/processing, and
> roll off the low frequency content. It's good engineering practice for
> the
> highest quality broadcast stations, and it's good practice for ham radio.
>
> Indeed, the only difference between what's right for broadcasting and for
> ham radio is WHERE to cut the low end and HOW MUCH money to spend on
> compression/processing. Many years ago, I sold processing systems for
> broadcast stations that cost upwards of $10K in today's dollars, and I
> helped the chief engineers of those stations adjust them. I suspect that
> W8JI and K4TAX have similar experience. Before I spent ANY money on an
> outboard box for a ham rig, I would first follow all of those elements of
> good engineering practice.
>
> 73,
>
> Jim Brown K9YC
>
>
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