Can you please tell me whats the difference between


a Phase switch?

Phase spliter?

Polarity switch?


What are the Phase angles or degrees for each of these ?


For using 2 mics i heard its best to flip one of the polarity

or phases of one of the mics

whats the difference between polarity vs phase?

Does the Frequency cancel out on both mics when its the
same frequency?

Wont there be notches if i flip one of the mics polarity or phase?

walters wrote:

Can you please tell me whats the difference between a Phase switch? Phase spliter? Polarity switch? What are the Phase angles or degrees for each of these ? For using 2 mics i heard its best to flip one of the polarity or phases of one of the mics whats the difference between polarity vs phase? Does the Frequency cancel out on both mics when its the same frequency? Wont there be notches if i flip one of the mics polarity or phase?

OK listen you will get better advise if you just ask one question at a time in each of your posts..

i.e. What is phase switch? - and leave it that way... when you ask multiple thigns in posts it would put people off replying.

So to answer one question, a phase switch can be found on some mixing desk channels, this simply inverts the phase of the signal coming into it.
_________________
Recording Studio Suntans

ya know you can get a lot of these answers with a quick google search:

Definitions of phase splitter on the Web:

* (circuit) A circuit which generates - out of an ac input signal - two equal-amplitude outputs, one of which is 180 out of phase with the other (ie one is the other inverted). The dc levels may not be identical.
connectors.tycoelectronics.com/glossary/glossary-p.stm

in other words, it splits the signal so that one is the original and one is 180 degrees out of phase.

when something is 180 deg. out of phase it will cancel out.
when something is partially out of phase only certain frequencies (usually mid-range) will cancel.

walters wrote:

For using 2 mics i heard its best to flip one of the polarity or phases of one of the mics. [...] Wont there be notches if i flip one of the mics polarity or phase?

The phase switch is right there [points at the phase switch button]; you tell me.

The phase switch is a funny thing. Nobody seems to know quite what to do with it. I generally leave it alone*, but having said that... The ultimate goal of the engineer is to make whatever they're working on sound as good as they can. If flipping the phase makes it sound better, then flip the phase. Whether or not there are notches is beside the point. What matters is how good it sounds, and if flipping the phase on some of the channels sounds better, then do it.

*Sometimes If I'm having trouble with feedback, I'll reverse the phase. Sometimes it helps, sometimes there's no real difference, and sometimes it makes it worse**. Also, if something just sounds weird, one of the things I might do is play with the phase switches. If I've got to violate the 3:1 rule (mics should be 3 or more units away from each other for every 1 unit they are away from the source) I'll start off with one of the mics out of phase. Sometimes I leave it that way and sometimes I don't.

**Which is why you have to be careful if you're jacking with it live and the mic was already close to feeding back.