[Silenced]

What do they mean? I understand frequency response but square waves confuse me.

 

[3602]

Second.

 

[Pars]

Square waves consist of the fundamental plus infinite overtones (that is what creates the straight vertical line and top). They are used because the amount of rounding off will give an indication of how well the device handles high frequencies. Obviously redbook digital won't look too good passing a 10KHz square wave as it will only pass the first overtone plus the fundamental.

 

[blahblahblaster]

Quote:

Originally Posted by Pars /img/forum/go_quote.gif Square waves consist of the fundamental plus infinite overtones (that is what creates the straight vertical line and top). They are used because the amount of rounding off will give an indication of how well the device handles high frequencies. Obviously redbook digital won't look too good passing a 10KHz square wave as it will only pass the first overtone plus the fundamental.

ouch my brain. i get it even less now...

 

[eucariote]

There was just a discussion of this topic in the sound science forum.

 

[Uber_Roxxorz]

My (basic, basic) understanding (from my signal processing class etc) is that a square wave (or any other shaped wave) can be be made up of the summation of many sine waves of different frequencies. (See Fourier Transform) The important thing to note here is that if any of those frequencies get attenuated (basically, filtered out by some amount), the square wave will be distorted. So, how faithfully a pair of headphones reproduces a square wave that goes through it may indicate whether or not it is attenuating certain frequencies. A square wave that goes through a low pass, high pass, or band pass filter will have a significant distortion. I think this is basically what blahblahblaster was getting at. However, I believe that distortion can occur from attenuation of low and/or high frequencies, not just the highs. Hopefully, this helps explain something. Also, if someone with much more knowledge than myself could please correct any mistakes that I have made. Enjoy your square waves!

 

[ghostfish]

Where are these square wave graphs? I've only ever seen the frequency response, THD and isolation graphs.

 

[Uber_Roxxorz]

Go Here: Learning Center - Build a Headphone Graph | HeadRoom Audio

Choose a headphone or four.
Then select the square wave at 500Hz or 50Hz.

 

[Drag0n]

"" Can someone explain square wave graphs?""


*shrugs* They have corners, and round waves dont?

 

[thornygravy]

Quote:

Originally Posted by Drag0n /img/forum/go_quote.gif "" Can someone explain square wave graphs?"" *shrugs* They have corners, and round waves dont?

seconded

 

[ghostfish]

I can't read the units used for amplitude in the square wave graph, anyone know what they are? I'm curious exactly what they're measuring the amplitude of.

Pretty simple what the graphs are showing though I think, they demonstrate a phase shift of various frequency components caused by the headphone's construction. Basically, the less it looks like a square wave, the more different frequencies are shifted in time by the phones.

 

[Silenced]

ok let me rephrase the question. What does an ideal Square Wave graph look like?

 

[MomijiTMO]

Straight lines looking like a square if you move the negative phase.