?? Are you recording at the ear drum? Furthermore do you compensate the transfer function of headphone to ear drum in playback?
What do you mean with "how severe the recorded HRTFs are". They are what they are and what they need to be. Our torso, head and pinna is a spatial encoder. Each angle of incidence represents a new and unique transfer function which alters the direct sound. Removing those transfer functions effectively creates a stereo recording, not a binaural recording.
That is pretty much the received wisdom, but nobody has made a decent binaural recording using anechoically measured HRTFs, as far as I know.
If the ear canal isn't involved in the recording then it indeed doesn't need to be compensated for. Nevertheless there are resonances from headphone to ear canal entrance. Furthermore and probably even more important is to compensate for the frequency response abberations of the headphone itself.
This would involve creating HRTFs for a multitude of angles. The recording would need to have as many channels as HRTF angles involved. How many HRTFs are needed? Nobody really knows for sure.
Last edited:
It works well enough for me and my headphones without. There are data available for the KU 100, and headphones, if you are interested. Audio Group Download Server How should one measure headphones? What to look for? Learning Center - Build a Headphone Graph | HeadRoom Audio
Last edited:
Simply measure the transfer function headphone to mic. Then inverse that filter and apply it via convolution to the playback signal.
They normally measure with a head and torso device, but that makes it difficult to interpret. A mic free-field is no good - no bass for one thing. I have used a mic set flush in a flat plate placed against the headphone pad, but I am not sure of what use that is in general. I used it to measure changes whilst modifing (adding damping). To be meaningful, you probably need to use a probe in your own ear and compare the headphone response to the results using a speaker at some free-field position or in a reverberation chamber. Outside my means..
Last edited:
err no.. you have to drill into your own head dummy! See edited version above.
Last edited:
Why would you need "to drill into your own head dummy"? If you want to exclude the transfer function of headphone to ear canal entrance then simply measure it and create a inverse filter. By the way, that's exactly what the Smyth Realiser does.
Yes it does and exactly what needs to be done. If we want to compensate for the additional effects of headphone playback then we need to measure them, build a filter and convolve it with the playback signal.
And you can use this for pre-recorded binaural recording? And my file still sounds like stereo? Perhaps you can afford to get some HD 219 for those camping trips..
^
No, I didn't do this. I was talking about an idealized scenario. At http://www.audiogroup.web.fh-koeln.de/ku100hrir.html there are a couple of compensation filters for headphones that could be used though.
I was listening to your files over a Stax SR-202.
No, I didn't do this. I was talking about an idealized scenario. At http://www.audiogroup.web.fh-koeln.de/ku100hrir.html there are a couple of compensation filters for headphones that could be used though.
I was listening to your files over a Stax SR-202.
I just got a report from a friend who heard everything in the right places, unprompted. He has the HD219s (prompted).
Markus do you have a Realiser? I recnetly got one and am discovering the possibilities.
Jan
- Status
- Not open for further replies.