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Transducers used in body exploration require a certain amount of filtering and dynamic processing. Amplification in itself is generally not too difficult, but the frequency response must be tailoed to

Hi everyone, I am a cardiologist. For a fun activity, I am working on my own electronic sthethoscope design. Heart sounds are low frequency and low intense sounds. (About 20 to 1200 Hz). Are listened

Somewhat off topic… I'm not sure whether absolute polarity is audible. I’m willing to believe that a trained listener can hear it. I don’t think I can. I can tell when polarity is switched, but

I didn’t emphasize enough that if you are using stereo pair mic techniques, then polarity match matters. _______________________________________________ One technique for achieving "noise

have multiple mics out there wired with "+" to Pin 3. It works but the absolute phase is obviously reversed. Hmmmm.... ________________________________________ No problem, JR. Just hold it

I forgot to mention that the kick drum was recorded on tape, so there was no comparison with an acoustic source.

Indeed for live sound polarity matters very much - whether what comes out of the speakers is in the same acoustic polarity can make a big difference. -Scott

There have been a number of studies regarding teh audibility of phase and polarity. Regarding phase audibility, it's been shown that phase distorion could be heard when it changed significantly the

Goran: Appologies for using phase and polarity interchangeably. That is the way engineers I know carelessly use the terms. "So I would hazard to claim that the + sign should indicate to be connected

I would think the upper and lower heads of a snare drum would be? pretty good test but with the opposite expectation. The summed sound would be thicker if the two mics have opposite

On a two-terminal electret capsule, + means hot (ie: not ground), and is usually the drain of the included FET. And as you say, it's connected to a resistor from the positive bias voltage. From my

Jules Ryckebusch: What is + on a prepolarized condenser capsule ? Is it where the resistor going to the positive supply + should be connected ? Or is it the positive pressure applied to the diaphragm

I just checked my Pin 3 SimpleP48 against my U87 and more scientifically, looked at the waveform from an impulse. Both show that Pin 3 for the "+"of the capsule provides the signal swinging positive

I'm a little confused, myself... all the SP48 mics I've ever made have capsule + to XLR pin 3. A few years ago I went through all of my microphones (commercial and DIY), and all of my devices and

One should keep in mind that phase is relative to a steady-state sinewave only, when polarity relates to just any signal.

Google this: "what is the 3 to 1 rule when dealing with microphones" The book by one of the founders of Electro-Voice, Inc "Lou Burroughs" Microphones: Design and Application Sagamore

I just recorded a stereo file of my voice into the following two mics held close together - L is a TOA K4 cardioid true condenser stick mic, absolute stock, and R is a TSB140 electret cardioid mic

Henry Spragens, If I were to believe in the above gospel then there should not be any standard at all as regards polarity and stereo as we know it today would sound very weird indeed. Henry

So what happens if I have a mic with polarity reversed? Usually, nothing. If the mic is not paired with another one, for instance a soloist or individual drum mic, acoustic phasing is more or less

Henry Spragens: "Check polarity" https://musicproductionglossary.com/what-is-absolute-phase/ Is Polarity a Phase? It’s important to keep the concepts of “phase” and “polarity” separate