I, like most adults over 60 who have been involved in industry or music suffer from notch deafness - i.e we have reduced hearing at frequencies around 2000hz and 4000hz - just the frequencies which cause difficulty in understanding speech - particularly in background noise - We require an active filter circuit easily made, to fit into our tv sets (or headphones) which will selectively amplify these missing notches - does anyone have a circuit?
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Notch Filter for audio output
- Thread starter overland
- Start date
Overland,
You might take a look at a product that MFJ builds. It's intended for people with frequency hearing loss to use with amateur (HAM) radio but would work for a muriad of aplications I'd think.
In case the link doesn't work.. go to:
and search for MFJ-616
It uses notch filters for various frequencies and also DSP technology.
Hope this helps,
Todd KB7RQQ
You might take a look at a product that MFJ builds. It's intended for people with frequency hearing loss to use with amateur (HAM) radio but would work for a muriad of aplications I'd think.
In case the link doesn't work.. go to:
and search for MFJ-616
It uses notch filters for various frequencies and also DSP technology.
Hope this helps,
Todd KB7RQQ
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