I don't understand these graphs.
With headphone graphs there is for a normal sound, supposed to be a boost in dB somewhere in treble.
Like if you look at the Empyrean graph from Head-Fi.
There's the peak, somewhere between 2K and 6K Hz. (2K to 9KHz for the Sennheisers.) There has to be this peak with headphones, and it's something to do with the shape of the ear canal.
However the graphs I quoted don't show those peaks. They show a more flat response. I am wondering if those graphs are compensated to something like real value effect. Or how much energy we hear after out ears have heard the sound. Or in real terms. (Can't say what I mean here sorry.)
(On another note, I was never able to work out what the amplitude of that peak should be. Or it's width.)
Hi.
Only headphones measured on the same measuring platform can be compared.
What is interesting to know here are the relative differences in RF measurements, in this present case, in the bass (for the relative level of bass between these four headphones).