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Thread: Changing Door Chime Sound

  1. #1
    Join Date
    Jul 2007

    Changing Door Chime Sound

    I'm attempting to alter the warning sound the car makes in lieu of a complete PC install. (Nothing wrong, I just don't like the sound :-p) For the 99 Aurora, the chime is built into a body control module (MALL) controlling essentially all interior electronics. There's a large IC in the unit with two pins connected directly to a two-pin speaker header just like a PC header. A 16 ohm speaker is connected to this.
    So, would there be any way to use the audio signal off this header as either a) a trigger for a microcontroller to generate a different sound or b) an input for some sort of small inline sound modulator that I can use to at least tweak the signal? If so, what do I need?

    I don't reckon anyone has been picky enough about their warning chime to try this, but I thought I'd ask.


  2. #2
    Maximum Bitrate
    Join Date
    Jun 2005
    chicago, Illinois
    Within the FAQs we have here, on the OEM/Factory/Stock Audio Integration Products Companies post, I found that makes a part model TR-4:
    Senses voltages as low as 0.8 volts and gives you a 12 volt output with a one second delay. Trigger off of speaker leads or +5 volt remote wires.
    • Add a remote turn on for aftermarket amplifiers in vehicles without a factory remote wire.
    • Eliminates turn on pops in amplifiers

    Or something like that, I'm sure If you search you'll be able to find some from a few different websites.
    "In the beginners mind there are many possibilities, but in the experts mind there are few."- Shunryu Suzuki
    "Do it right or don't do it at all"

    [-------90%-] (New Car=New Build)

  3. #3
    Join Date
    Jul 2007
    Great. Thanks for pointing me in the right direction.

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