Stefan Schreiber wrote:
Augustine Leudar wrote:
do you have a reference/source for that - that shoulder head reflections
dont matter in anechoice etc etc - I would be interested to read it...
They just arrive later than direct sound. And if the HRTF length is
too short and so you don't have the sample length to capture (any)
reflections...
Clear? Or did < I > miss something?
St.
Ok, I stand corrected:
http://alumni.media.mit.edu/~kdm/hrtfdoc/section3_4.html#SECTION0004000000000000000
In order to reduce the size of the data set without eliminating
anything of potential interest, we decided to discard the first 200
samples of each impulse response and save the next 512 samples. Each
HRTF response is thus 512 samples long. < Most researchers will no
doubt truncate this data further. >
44.1 kHz sampling rate
As the speed of sound is about 340m/s, you will capture shoulder
reflections even with just 128 samples.
(If your ear-shoulder distance is about 20cm, the shoulder reflections
will arrive about 40cm delayed compared to direct sound, i.e. about 1,2
ms later.
128/44.100 = 2,9 ms.)
Best,
Stefan
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