Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

The Hearing Aid Museum

Hearing Aids of all types—Ear Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids, Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing Aids and much more!

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Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid.

 

Cochlear Implants—Other Makes

House 3M Cochlear Implant

The House 3M cochlear implant was approved by the FDA in 1984.

The single channel speech processor used with this implant is shown in the picture on the right. It was relatively small measuring 3⅜” by 2” and about ⅝” thick. It used two number 401 type mercury batteries for power and was a body worn processor.

 

 

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The transmitter, which was placed over the implant just behind the ear, sends coded signals to the implant within the cochlea. (Implant not shown.)

If you ever wondered what speech would sound like via a single electrode cochlear implant, wonder no more.

Here is a recording made by using an induction coil to pick up the signal from the transmitter that is being sent to the implanted electrode. Below is the link to the sound recording and below it is a transcript of this recording. (Press your browser's back button to return to this page.)

Click here for 23 second recording

"This is a test of the House 3M single-channel cochlear implant speech processor approved by the FDA in 1984. This recording was made through an induction loop receiver. It would appear that the signal produced is analog."

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The microphone uses a tie pin type fastener and could be attached to the clothing.

 

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A 1.4 volt Eveready 401 mercury battery, powered this processor.

 


 

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