samvafaei
Head-Fier
- Joined
- May 4, 2016
- Posts
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- 27
So without a Smyth Realiser, there really is no such thing as headphone soundstage? Because of your four things you're using to define soundstage in cans, two of them are things I've never heard a headphone do at all (sound in front, variation in phantom center) and two are things that are pretty much irrelevant to soundstage in a loudspeaker rig (open/closed, interacting with environment). Why even talk about soundstage if no headphones can do it without a computer head tracking system?
For speaker soundstage I would say there are three aspects... distance from the listening position to the speakers, meshing of the phantom center between each speaker, and height. Headphones can't do any of this.
- Headphones don't have crosstalk, so for them to create a proper Soundstage, they need to artificiality add some correlated crosstalk.
- Headphones don't interact with human's HRTF like loudspeakers do. To tackle this, you either need very large and deep drivers like the HD 800 S (which only interacts with the pinna - check out PRTF on our website), or a software that simulates the whole HRTF of the individual (and not just the transfer function of the outer-ear area)
- Headphones don't have room effects (reverb, group/phase delay). Now either a headphones has to do this naturally or artificially. For doing it naturally they would have to be infinitely open and loud like loudspeakers (something open-backs try to get close to) or they should simulate room effects using software.
There's nothing a Smyth Realiser does that can't be done using an iPhone app and couple of in-ear mics. It's just a matter of practically and mass market appeal. It'll come sooner than later.
Now comes the $64,000 question... you've heard a lot of different models of cans. Have you ever heard a pair that is able to create the effect of depth, width or soundstage with a dry mono recording? Every one I've ever heard puts mono in the middle of my skull.
No headphones that I've listened to have a speaker-like Soundstage. The AKG N90Q seems to one of the few that tries to get Soundstage right, but I haven't listened to them.
I have another question... Sorry to be a pest! You say that you are using the sound of good speakers in a good room as the ideal model for what headphones should sound like. I'm curious what kind of speakers in what kind of room you are using as your model? Do you have a reference rig that you are referring to? I'd like to see photos if you do.
Our reference for frequency response at the moment is Harman's critical listening room. You can read about it online (e.g. Sean Olive's blog). But the rest of what I said was theoretical. That is, the ideal headphone should sound like an ideal speaker in an ideal room, and from there, it's relatively easy to theorize what the difference between a pair of headphones and speakers are.