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  • Users: RodH
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  1. RodH

    Auto volume control

    Hi, does anyone have sample circuits for what GM calls "GAL". ie: automatic volume control in a vehicle, to compensate for road noise as the speed increases. I had some ideas about hooking an F-V converter to a VGA but before I go reinventing this, I though I'd ask you guys. I gather...
  2. RodH

    Active Silencer discussion in Mechanical Forums

    Hi, may I ask if there's any auto engineers who can contribute to this: thread384-75898
  3. RodH

    Active Silencer discussion in Mechanical Forums

    Hi, may I ask if there's any EEs who can contribute to this: thread384-75898
  4. RodH

    Active Silencer/Muffler Design

    Hi everyone. I'm in the process of building up an active silencer for a typical mid-size car. Has anyone had any experience with doing this before and can reveal tips/gotchas to help get this project off the ground? The first prototype will be added to a typical "high flow" (read...

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