Re: Phone ring lowers radio?
- From: Mark Lloyd <mlloyd@xxxxxxxxxxxxxxxxxxx>
- Date: Sun, 13 Dec 2009 09:03:52 -0600
On Sat, 12 Dec 2009 21:44:02 -0800, "Bill"
<billnomailnospamx@xxxxxxxxx> wrote:
"Mark Lloyd" <mlloyd@xxxxxxxxxxxxxxxxxxx> wrote in message
On Sat, 12 Dec 2009 07:49:22 -0800, "Bill"
<billnomailnospamx@xxxxxxxxx> wrote:
Is there such a gadget?
You can get a phone gadget for the deaf which activates a light when the
phone rings. This can be connected to a relay to turn something off. You
could also wire it to a remote control pointed at the stereo to activate
the
muting button via a relay. (Get a second remote control and modify it.)
There's a problem there. Most mute buttons are TOGGLES. The button can
un-mute as well and there's no way for the control to know what (mute
or un-mute) it's doing without feedback.
Just design a latching relay or other latching circuit. You would need to
press a reset button to reset. The reset button could also again activate
the mute signal.
I know about those, and have one controlling the audio in my A/V
system. It switches the audio. I could do this because the audio is
accessible (output from A/V switch to stereo receiver).
A latching relay still wouldn't solve the toggle problem (you need to
know the state of the device (muted or active) to determine whether or
not to send the signal.
The process I actually go through when the phone rings is something
like this:
===========================================
1. Are you listening to any controllable device? If not. DONE
2. Determine which device.
3. Is this device playing a recording? If not, GO TO STEP 7
4. Is the output of this device being recorded by another device?. if
so, GO TO STEP 7
5. Is the recording paused, if so DONE
6. press PAUSE on that device, DONE
7. Is the audio muted? If so, DONE
8. Press MUTE on the device, DONE
============================================
It isn't too complicated for a person. It is for some simple automatic
device.
--
12 days until the winter solstice celebration
Mark Lloyd
http://notstupid.us
"How could you ask me to believe in God when there's
absolutely no evidence that I can see?" -- Jodie Foster
.
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