[TenTec] "Sounds Sweet"

[Dave Edwards]

Yikes...sounds like I should start hating the old Lafayette speaker I've had 
connected to my Omni VI+ all this time!!
...Dave

----- Original Message ----- 
From: "Grant Youngman" <nq5t at comcast.net>
To: <kg6tt at arrl.net>; "'Discussion of Ten-Tec Equipment'" 
<tentec at contesting.com>
Sent: Thursday, March 16, 2006 5:42 PM
Subject: Re: [TenTec] "Sounds Sweet"


>> sources. I not only notice minute amounts of distortion but
>> find myself getting headaches quickly if there is too much
>> 'pink' noise from excessive high frequency content.
>
> Actually, pink (or 1/f, or flicker) noise has a lower high frequency 
> content
> (relatively) than "white" noise.
>
> White noise has the same energy at every frequency.  Pink noise has the 
> same
> total energy in every octave.
>
> For example, pink noise will have as much energy in the 10000 to 20000 Hz
> range as it has in the 100 to 200 Hz range, or the 1000-2000 Hz range.
>
> Using 1 Hz as an arbitrary unit of measure for example purposes, there are
> 100 "frequencies" between 100 and 200 Hz and 12800 frequencies between 
> 12800
> and 25600 Hz.  Since in white noise, the noise energy at each of those
> frequencies is the same,  white noise will have (relatively) a lot more
> energy in the higher range than the lower.  In fact, white noise has 3dB
> more energy per octave than pink noise.  In this example, the white noise
> will have 18 dB more energy in the 12.8-25.6K range than pink noise.
>
> It's why waves "crash" and don't have relatively much "rumble", which 
> might
> be more like what they sounded like if they generated pink instead of 
> white
> noise  ...
>
> Which doesn't mean there isn't also a reason to reduce the high frequency
> content of pink noise, either, to please the ear.
>
> More than you wanted to know, I'll bet :-)
>
> Grant/NQ5T
>
>
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