Analog noise on Atari Falcon

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exxos
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Re: Analog noise on Atari Falcon

Post by exxos »

Found this...

(oh think you found it already :lol: )




That does sound bad.. sounds like half the audio phase is missing or something!
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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exxos
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Re: Analog noise on Atari Falcon

Post by exxos »

Looking at the datasheets, both have a DC blocking cap on the audio output... The falcon however doesn't... That could be a reason if the DC offset isn't removed, it would be clipping constantly..

ITT.PNG
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CS.PNG
CS.PNG (62.02 KiB) Viewed 228 times
falc.png
falc.png (452 KiB) Viewed 228 times

But that wouldn't really explain why the CS works and ITT doesn't anyway.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
mikro
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Re: Analog noise on Atari Falcon

Post by mikro »

Maybe this might help? https://atari.joska.no/audiomod
leonk
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Re: Analog noise on Atari Falcon

Post by leonk »

UPDATE: The CODEC has been replaced (in a new socket) and WOW .. all the noise is gone! MP3, demo playback is crystal clear!
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IMG_8175.JPG (439.69 KiB) Viewed 75 times
Steve
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Re: Analog noise on Atari Falcon

Post by Steve »

Nice! I guess that ITT DAC is just rubbish :)
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