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Title: Dog's Ears Emit Radio Sounds Post by: AJ1G on October 15, 2008, 07:09:18 PM http://www.cnn.com/video/#/video/offbeat/2008/10/15/radio.chihuahua.WOIO
To be frank, I couldn't hear a thing when they held the mic up to the dog's ear, but then my high frequency hearing is shot. My wife is always asking me what that whistling noise is when my Volvo XC accelerates..apparently its the turbo charger. I can't hear it at all! Back to the dog - at the end of the clip they mentioned Ashtabula - on careful re-listening I thought I heard something about .......damed slopbuckets! Title: Re: Dog's Ears Emit Radio Sounds Post by: KF1Z on October 15, 2008, 07:32:40 PM Nothing to hear.. just a high-pitch squeal they mistakenly call "radio noises".
Sounds like the AGC on the mic pre-amp cranks up when held near the dog's ear.. Even the back-ground noise comes up...... ---------- Actually though... Aliens abducted the dog, and implanted a transmitter in his head to spy on the other dogs... Title: Re: Dog's Ears Emit Radio Sounds Post by: W1ATR on October 15, 2008, 07:35:32 PM That's the chicken band mobile keydown guy running 22,000 watts next door that they're hearing. If you turn up your speakers you can hear it more clearly.
Wurl wide wurl wide wurl wide. They call me mista wurl wide audio drive. Cotton pickin duck plucker, we out!!! Title: Re: Dog's Ears Emit Radio Sounds Post by: KL7OF on October 15, 2008, 09:56:02 PM woof
Title: Re: Dog's Ears Emit Radio Sounds Post by: Opcom on October 15, 2008, 10:34:58 PM dog's ear is a non parabolic reflector. Try the xperiment with a mixing bowl.
Title: Re: Dog's Ears Emit Radio Sounds Post by: WU2D on October 16, 2008, 12:58:34 AM I knew a tech at Motorola back in the early 1980's who could feel RF field strength in his head. This was handy. He could also make an HT-220 moo like a cow.
Mike WU2D Title: Re: Dog's Ears Emit Radio Sounds Post by: Rob K2CU on October 16, 2008, 12:50:35 PM It may be what is known as "Objective Tinnitus" where the sounds that the patient hears are also heard coming out of his/her ears. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
As best as I can recall from my duaghter's text book on psychoacoustics, there is a structure in the ear that actually consists of thousands of tiny biomechanical amplifiers that amplify the vibrations form the cilia in the cholclea prior to them exciting nerve endings. I think they had a gain of somewhere like 5 to 10 and there was some sort of agc systems as well. problems could cause an amplifier to oscillate and recult in tones or whistling sounds in your ear. When large enough in amplitude, they can be heard being emitted from the ear. I suffer from tinitus as my dad did. Often caused by substances like coffee, alchohol, tobacco, etc. it also comes an goes. wideband noise sources, like listening to the bands now a days, often supresses the tinitus. |