user 37518
Well-known member
I posted this thread on another forum, without any success, i guess everyone there is as lost as i am.... anyway here it goes, i hope i have better luck here
For years ive been looking at lissajous or phase scopes and till this day i really havent found an exact way to interpret them, depending on the scope it will be how its layed out, but lets assumume the vertical = mono, horizontal equals 180º out of phase layout which is not the typical XY.
Heres the deal, i really dont understand what the bottom 2 quadrants mean, at first i thought they were like a negative replica of the top 2 quadrants, but then i realized they are not, its obvious that the quadrants are opposed to each other, meaning that at the bottom, the right quadrant means L, while the left quadrant means R.
My first thoughts, is that the top represents the peak of a wave, and the bottom means the valley of a wave, does this make sense?
In the same manner, i know that if a signal is completely horizontal, it is out of phase, or one side is completely out of phase to the other, but now i have the same issue, the image turned, and now, the rigth (or left) quadrant, is the equivalent of the top and bottom.
Ive been googling this for the las 2-3 days, and theres not much info on phase/lissajous meter reading, except for the obvious description.
So does anyone have a better definition as to what exactly this phase scope meter represents?, im NOT talking about the correlation meter, and im not looking for the textbook definition of "its phase versus amplitude", and all that crap, im looking for a real and easy way to actually read these bastards, common shapes, interpretation, etc.. aswell as the practical meaning of their axis/quadrants.
Ive been experimenting with them, and unless something is extremely out of phase, its still hard to look at the meter and realize something is wrong with the material being monitored, a little bit of experience would mean a lot here.
To add more to the confusion heres a screen shot of the Flux stereo tools phase scope i took while playing certain passage in a song i was checking, the bottom and top quadrants do not match at all, can someone explain what this means?
I read somewhere that this could mean DC offset, but i tried filtering out and it doesnt change a thing, plus, this only happens at certain parts of the song, so i can discard DC, this is a passage where the vocal is left with a piano and drumkit only, in an acoustic arrangement and song.
IDEAS?
For years ive been looking at lissajous or phase scopes and till this day i really havent found an exact way to interpret them, depending on the scope it will be how its layed out, but lets assumume the vertical = mono, horizontal equals 180º out of phase layout which is not the typical XY.
Heres the deal, i really dont understand what the bottom 2 quadrants mean, at first i thought they were like a negative replica of the top 2 quadrants, but then i realized they are not, its obvious that the quadrants are opposed to each other, meaning that at the bottom, the right quadrant means L, while the left quadrant means R.
My first thoughts, is that the top represents the peak of a wave, and the bottom means the valley of a wave, does this make sense?
In the same manner, i know that if a signal is completely horizontal, it is out of phase, or one side is completely out of phase to the other, but now i have the same issue, the image turned, and now, the rigth (or left) quadrant, is the equivalent of the top and bottom.
Ive been googling this for the las 2-3 days, and theres not much info on phase/lissajous meter reading, except for the obvious description.
So does anyone have a better definition as to what exactly this phase scope meter represents?, im NOT talking about the correlation meter, and im not looking for the textbook definition of "its phase versus amplitude", and all that crap, im looking for a real and easy way to actually read these bastards, common shapes, interpretation, etc.. aswell as the practical meaning of their axis/quadrants.
Ive been experimenting with them, and unless something is extremely out of phase, its still hard to look at the meter and realize something is wrong with the material being monitored, a little bit of experience would mean a lot here.
To add more to the confusion heres a screen shot of the Flux stereo tools phase scope i took while playing certain passage in a song i was checking, the bottom and top quadrants do not match at all, can someone explain what this means?
I read somewhere that this could mean DC offset, but i tried filtering out and it doesnt change a thing, plus, this only happens at certain parts of the song, so i can discard DC, this is a passage where the vocal is left with a piano and drumkit only, in an acoustic arrangement and song.
IDEAS?