Stax and Sushi
- Nov 26, 2002
May I ask what headphone setup you're using? This is one of the areas(more wet/reverberant rooms) where I observed significant increases in fidelity from specific equipment. I use an isolated, crystek clocked hub chip and usb to i2s board powered by an isolated ultracapacitor supply, non feedback current signal amplifiers with discrete double stage regulation, balanced drive, and planar headphones. And depending on your personal beliefs, using an r2r dac or doing real time 512dsd conversion can improve that naturalness further, though I have little experience with the latter and none with the former, so your standard es9018 does rather well ;]
I am not using ooyh these days (the clock just gets out of whack within a few minutes with pop/click sounds that get worse. It’s unusable as I need to keep switching away and back to the output card (su-1 per sig). But when I did, I was using a rather resolving rig (totaldac d1-dual/six > bhse > sr009). I plan to use the rig in my sig with the a16.
In regards to how realistic the reverb sounds, the resolution of the rig probably plays a role but we also need to keep in mind how low fidelity these PRIRs are (cheap electret mics with probably not very good snr etc). I have admittedly very little experience with this as I just used ooyh (never owned an a8) but never could get to enjoy listening to music through ooyh. The only prirs I can stand are those from aix and even there, the coloration outweights benefit from binaural rendering. The plan for me is to use the a16 for movies and, as such, I actually am not too worried about the quality of dac etc...
It is possible to use a PRIR made with only a tweeter to have a high quality BRIR personalised for you on the exchange website. That probably would have been what you recall them suggesting. I don't think such a tweeter-only PRIR could be used as-is to listen to (well, of course it is possible, but it would not give a full range sound). The reason why such a tweeter only PRIR is sufficient to personalise a BRIR with is that the individual differences in HRTFs are mainly in the higher part of the frequency spectrum.
Yes, exactly, I always like to refer to Tyll’s articles as he had this ability to make technically involved topics accessible to anyone motivated to learn about the subject: https://www.innerfidelity.com/content/headphone-measurements-explained-frequency-response-part-one
Now, looking at the various gains chart, the head and torso already play a role from 200Hz so I guess this is why PRIRs actually cover all frequency range (except below 100Hz where user can just use raw signal right?). I was hoping I could use a small broadband single driver equed to measure flat on axis from 200Hz or so but that might not be enough then?
When you think about it, it’s such a waste of effort to try acquire PRIRs below 200Hz and ironic that we then get into requirement to make the PRIR measurement through a room equalized speaker system when we should just not record LF content in the first place...