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GandalfPC
10-01-2002, 10:24 AM
I purchased a Tick Tech Pickup (a sensitive microphone that you clip on to the watch bow via an aligator clip) and hooked it up to a Radio Shack mini amplifier that I had laying around (I have seen the pickup and the amplifier sold as a combo in the TimeSavers catalog)

It works great, allowing me to hear the ticking loud and clear - even better than a stethescope.

When I hook up the output from the mini amp to my computer microphone input, I am able to hear and record the ticking, but there is an electronic feedback hum in the background that I would like to get rid of.

Anyone with any experience in such matters? (I have already tried adjusting the PC's microphone sensitivity and mic boost, but to no avail) - perhaps a filter of some sort?

If need be, I can use a regular microphone to convey the sound from the mini-amp to the PC (just putting the mic up to the mini-amp's speaker) but I would like a direct connection to the PC if possible...

GandalfPC
10-01-2002, 10:24 AM
I purchased a Tick Tech Pickup (a sensitive microphone that you clip on to the watch bow via an aligator clip) and hooked it up to a Radio Shack mini amplifier that I had laying around (I have seen the pickup and the amplifier sold as a combo in the TimeSavers catalog)

It works great, allowing me to hear the ticking loud and clear - even better than a stethescope.

When I hook up the output from the mini amp to my computer microphone input, I am able to hear and record the ticking, but there is an electronic feedback hum in the background that I would like to get rid of.

Anyone with any experience in such matters? (I have already tried adjusting the PC's microphone sensitivity and mic boost, but to no avail) - perhaps a filter of some sort?

If need be, I can use a regular microphone to convey the sound from the mini-amp to the PC (just putting the mic up to the mini-amp's speaker) but I would like a direct connection to the PC if possible...

Tim
10-01-2002, 12:49 PM
If the hum sounds like it is 60 Hz, then it probably means something (amp or computer) is not grounded properly.

If it truly is a feedback whine, then that means you should turn off the speakers when using the mike.

Neat idea!

-Tim

[This message has been edited by Tim (edited 10-01-2002).]

GandalfPC
10-01-2002, 12:54 PM
I think you are right about the grounding issue - I will do some experimenting...

Thanks :smile:

mikeh
10-01-2002, 02:42 PM
GandalfPC,

Have you tried plugging the Tick Tech directly into your sound card in place of your microphone?

Regards,
Mike