Polarity
Apple Event: May 7th at 7 am PT
Polarity
Sometimes it is also labeled "Phase" or "Phase Invert". It flips the phase of the audio signal by 180°.
This is an important topic and when working in audio production, you should read up on it a little bit. No need to understand all the technical background, but at least have an idea about the basic concepts.
Here are just a few points:
- Changing the phase of an audio signal has no (audible) effect if you work on a single audio signal or audio signals that are not "correlated" (two completely different audio signals)
- When you have two identical signal (two Channel Strips) and you "invert the phase" on one Channel Strip, then the signals will cancel each other out.
- Using two microphones to record one acoustic signal could result in a bad "phase correlation" due to the distance of the microphones to the source. This could cause a colorization of the signal that can be improved sometimes by "flipping the phase" of one Channel.
- When you hook up your two analog speakers and connect the + and - speaker cable (indicating the polarity) on one speaker wrong, then your speaker are "out of phase", a very undesirable effect. If you don't know how that sounds, do it on purpose.
- Sometimes in a mix you can use the phase button to create an "out of phase" sound on a stereo signal to widen it in the stereo image. However, you have to be aware of the concequences when listening to mono.
- A lot of your favorite Audio FX (Chorus, Flanger, Phaser) are using the concept of "messing with the phase" to achieve specific effects
Logic's Channel Strip doesn't have a didicated Phase switch. The one from your screenshot is the Audio Device Control which functions as a Remote Control for the controls on the connected Audio Interface.
However, you can add the Gain Plugin to any Channel Strip, which has a "Phase Invert" button.
Hope that helps
Edgar Rothermich - LogicProGEM.com
(Author of the "Graphically Enhanced Manuals")
http://DingDingMusic.com/Manuals/
'I may receive some form of compensation, financial or otherwise, from my recommendation or link.'
Changes all your chords to half-diminished. (although the vertical line is more commonly slanted) 😝
😁😁😁
You know, Pancenter, I always thought it changed your chords to minor seventh flattened five chords...
octopi wrote:
You know, Pancenter, I always thought it changed your chords to minor seventh flattened five chords...
mi7-5, Also known as half-diminished, the diminished symbol with a slash through it, one and the same.
Ooops, should have put the sarcasm symbol...
Had a load of charts a while ago where all chords where crammed in, written in full (Amin7b5 | Dmaj7b9), and I said "can't I just put the symbols for dim, half-dim and maj/min?" etc
It made the chart a whole lot neater.
You guys are cracking me up with your posts. Love it! Keep it up. 🙂
What does this symbol mean?