What is Phase in Audio - Concepts of Phase and Polarity
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- เผยแพร่เมื่อ 2 ก.ค. 2024
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In this video I explain the concepts of phase in relation to sound. You will learn how this concept relates to music production and how you can fix phase issues as they occur.
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Pretty solid explanation! I think one thing that would make this video even better would be audio examples of phase issues just so I can recognize it by ear now that I know what’s going on conceptually
Absolutely, on the hunt for just such a video
So well explained. Thank you
i really needed this, thank you!
Really well explained ! i am gonna subscribe
ty, going little by little, it is still hard for a begginer like me
Insanely valuable content.
Best explanation with pictures of physical nature 😊 thx
Thank you!
amazing video, thanks
Great vid. Thank you much
❤obrigado!
thank you clearly explain
great!
A polarity flip is indeed the same as a 180 degree phase change of the phasor phase, or initial phase, at all frequencies.
Phase has a time component. Polarity does not.
As soon as your sound wave is no more a harmonic sine wave, you will not be able to get a polarity switch by a phase shift of 180 deg.
@@Yoda8945 Yes, flipping the polarity will not introduce any delay (dead time). It will, however, change the phase delay and group delay, which causes a lot of confussion in the audio community. I have written articles about it, one is availble on AudioXpress. So time aspects can be derived from the phase, but most people try to think of phase being derived from time, which is not a good path to go down.
@@loettu Oh yes. All Fourier component will have their sign changed, which will be described as 180 degrees, for all frequencies. You might be thinking of time delay causing the 180 degrees at some distinct frequencies, but a time delay is a linear phase shift, whereas a polarity flip indeed is 180 degrees change across the entire frequency range.
Hi, thank you for the great videos!:) But i still have a problem, how do you handle a very large (or multiple) sound sources with two mics? For example when you put two mics in a grand piano for the low and the high registers. In my understanding you would have to shift for the high notes in one direction and for the low notes in the other… how can you handle this?
thx
As far as i understand -> out of phase = out of sync. This is a timing issue you need to flip the phase or edit, move the track or even both ! Soundradix's Auto Align VST takes care of this problem.