20 dB pad for 1 channel of a binaural microphone
20 dB pad for 1 channel of a binaural microphone
(OP)
I just built a binaural microphone for recording sound. Basically it is
two electret mics wired to a stereo minipl jack. However, I put a 1 kilohm shunt resistor between the positive lead and ground leads of the left channel microphone. I did this so as to attenuate one microphone by 20dB. (I arrived at the resistor value by experimenting with the Minidisc recorder I plan to plug the mic into). I did this because I wanted to record 2 mono versions of a sound, with one version 20 dB softer than the other, for safety. It seems to work, but is this safe? Am I overloading/risking anything in the Minidisc, eg the mic preamp? Thanks!
two electret mics wired to a stereo minipl jack. However, I put a 1 kilohm shunt resistor between the positive lead and ground leads of the left channel microphone. I did this so as to attenuate one microphone by 20dB. (I arrived at the resistor value by experimenting with the Minidisc recorder I plan to plug the mic into). I did this because I wanted to record 2 mono versions of a sound, with one version 20 dB softer than the other, for safety. It seems to work, but is this safe? Am I overloading/risking anything in the Minidisc, eg the mic preamp? Thanks!





RE: 20 dB pad for 1 channel of a binaural microphone
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: 20 dB pad for 1 channel of a binaural microphone
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: 20 dB pad for 1 channel of a binaural microphone
RE: 20 dB pad for 1 channel of a binaural microphone
Hey why the two different levels? Sounds like an unusual application.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: 20 dB pad for 1 channel of a binaural microphone
TTFN
RE: 20 dB pad for 1 channel of a binaural microphone
RE: 20 dB pad for 1 channel of a binaural microphone
RE: 20 dB pad for 1 channel of a binaural microphone
Here's a nice discussion:
http://www.aikenamps.com/ResistorNoise.htm
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com