Help on replacing a phone's mic with soundcard output
zelta912
So I bought a shitty phone, took it apart, and wired a 1/8 inch audio input
jack instead of the mic and a 1/8 inch audio output jack instead of the
speaker (to which I could plug in headphones). The soundcard is an SBLive
Value. The idea is to simply have a cord running from my soundcard's output
jack into the newly wired input jack on the phone so I could, for instance,
play a sound on the computer and have it playing on the phone instead, or
talk into the mic plugged into the soundcard with effects turned on (like
reverb), and have it again route to the phone's input.
However, when I try plugging the cord from the soundcard's output to the
phone input, the whole phone unit shuts down as if the signal from the
soundcard is too strong to handle. Yet, when I try running the cord from my
boombox's headphone jack to the phone input, it works fine, eg. I can play a
cd on the boombox and hear it playing on the phone. However, if I try
running a cord from the soundcard's output to the boombox's input (used to
plug in external sound sources, like from TV) and then try to run another
cord from the boombox's headphone jack to the phone input, the same thing
happens-- the phone stops working.
I don't think this is an issue of simply amplifying the soundcard signal to
get it working because then I could simply amplify it by routing it through
the boombox, which acts as a preamp, and increasing. I'm thinking that there
are probably voltage incompatibilities between the phone input and the
soundcard output jack but I am not sure if that is the case. So if anyone
could make any suggestions or tell me of other ways of using a soundcard's
output as a phone input, I'd be very grateful. If this is confusing, feel
free to ask questions and I'll clarify.
-d0om
--
Smokey Behr
>However, when I try plugging the cord from the soundcard's output to the
>phone input, the whole phone unit shuts down as if the signal from the
>soundcard is too strong to handle. Yet, when I try running the cord from my
>boombox's headphone jack to the phone input, it works fine, eg. I can play a
>cd on the boombox and hear it playing on the phone. However, if I try
>running a cord from the soundcard's output to the boombox's input (used to
>plug in external sound sources, like from TV) and then try to run another
>cord from the boombox's headphone jack to the phone input, the same thing
>happens-- the phone stops working.
My turn for ascii art...
You need to make a pad for the line out... It goes something like
this:
----------o--/\/\/--o-------- signal/hot
10k |
\
in / 100k out
\
/
|
--------------------o-------- ground/common
It attenuates the signal (makes it lower) so that you won't blow out
the phone. You can experiment with different values, or even put in a
100k pot to vary the level.
--
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Charles Moore
Charles.
Smokey Behr <gothbe...@gte.net> wrote in message
news:8t5bos0d87t2h8aj2...@4ax.com...
Major Chip Hazzard
modem" capability and an integrated sound card and hack around with the s/w and
jumpers until you get what you want. Voice-capable modems actually have a
sound-card like processing capability with your phone line, especially the ones
which also have a built-in sound card capability.
If you can lay hands on one, an older Aztech or Packard Bell modem/fax/sound
card/answering machine/caller ID card or an older IBM MWave modem/sound card
would be your best bet - you get all the sound-card to phone capabilities and
the phone just jacks in with no custom wiring needed, and Aztech has integrated
modem/fax/telephony software for all of their and Packard Bell's cards which
might do what you want. Should be easier than what you're trying now.
zelta912 wrote:
> So I bought a shitty phone, took it apart, and wired a 1/8 inch audio input
> jack instead of the mic and a 1/8 inch audio output jack instead of the
> speaker (to which I could plug in headphones). The soundcard is an SBLive
> Value. The idea is to simply have a cord running from my soundcard's output
> jack into the newly wired input jack on the phone so I could, for instance,
> play a sound on the computer and have it playing on the phone instead, or
> talk into the mic plugged into the soundcard with effects turned on (like
> reverb), and have it again route to the phone's input.
>
> However, when I try plugging the cord from the soundcard's output to the
> phone input, the whole phone unit shuts down as if the signal from the
> soundcard is too strong to handle. Yet, when I try running the cord from my
> boombox's headphone jack to the phone input, it works fine, eg. I can play a
> cd on the boombox and hear it playing on the phone. However, if I try
> running a cord from the soundcard's output to the boombox's input (used to
> plug in external sound sources, like from TV) and then try to run another
> cord from the boombox's headphone jack to the phone input, the same thing
> happens-- the phone stops working.
>