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Playing around with the HeadRoom graphs to get uncompensated and unsmoothed results gives this:
I moved from left to right
"yup, yup, pretty much as I would expect.... wait what happened at 1-4kHz?"
Playing around with the HeadRoom graphs to get uncompensated and unsmoothed results gives this:
The innerfidelity graphs are somewhat different.
http://www.innerfidelity.com/headphone-data-sheet-downloads
Playing around with the HeadRoom graphs to get uncompensated and unsmoothed results gives this:
May I know how to get this raw results? I cannot find the link in Headroom to get this data. I would be glad if somebody can point me to the link. Many thanks!
Here you go my friendhttp://www.headphone.com/learning-center/build-a-graph.php
The innerfidelity graphs are somewhat different.
http://www.innerfidelity.com/headphone-data-sheet-downloads
He is asking about the raw FR response (no compensation, no smoothing). I am asking as well, btw
May I know how to get this raw results? I cannot find the link in Headroom to get this data. I would be glad if somebody can point me to the link. Many thanks!
To get the different results you reduce the numbers by 1 or 2.
Here is the raw graph of the K712 and HD-650:
http://graphs.headphone.com/graphCompare.php?graphType=0&graphID[]=4161&graphID[]=851&scale=30
Yep, that is exactly it, you change the graphID numbers. However, you've made a slight mistake in your labels.
graphID[] = xxxx = "Frequency Response (Compensated and Smoothed)"
xxxx - 1 = "Frequency Response (Compensated but Unsmoothed)"
xxxx - 2 = "Raw Frequency Response"
I don't think there's a explicit link or any indication on HeadRoom that these graphs exist so you have to manually edit the URL. Also, anybody know what target curve HeadRoom uses for compensation?
Free Field – The HRTF when a sound is emitted from a source directly in front of the head in an anechoic environment. Diffuse Field – The HRTF when sound is coming at the head from all directions simultaneously.
Independent of Direction – A rather recently developed HRTF to measure real world sounds in less abstract and highly conditional situations than the two cases above.
I would prefer to have an HRTF calibration curve for the special conditions of two speakers placed 30 degree of axis as that is what the headphones are trying to simulate, but no such calibration exists. After lengthy discussion with the applications engineers at Head Acoustics, the Independent of Direction HRTF was picked as the most applicable for my purposes.
Actually they're exactly the same. Tyll provides the graphs to Headroom and they match what is on his site in almost every case. The graphs that yaluen posted are raw FR graphs with no compensation which correspond to the grey lines on the Innerfidelity FR graphs.