interaural time delay (ITD) hear test

Описание: what ITD is or better single-cycle interaural phase differences (IPDs) can read here and hear audio examples too http://acousticslab.org/psychoacousti...
The delay value can see on the left offset knob. the reason for this test is to show that for good sound quality need fast mid range speaker to give good quality reverb, depth of field and stereo width. The test is 1.2 khz lowpass filter so it is clear that position is only hear with ITD. the high pass filter 280 hz is because that it sound not so muddy

https://www.sciencedirect.com/topics/...
"Binaural hearing uses two main acoustic cues: interaural time difference (ITD) and interaural level difference (ILD) (Doerbecker and Ernst, 1996; Francart et al., 2011):
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ITD is the delay between both ears. It is efficient for low frequencies (below 850 Hz). It is due to the envelope of the signal reaching the two ears. It can be reminded that a sound coming from the side at 90° has an ITD of 0.6 ms. When the source is situated in the front (azimuth 0°), the so-called front target, the ITD is 0 ms.
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ILD is related to the intensity reaching the two ears. The signal is more or less attenuated by the head shadow. This effect is mostly perceptible with high frequencies (above 3 kHz). ILD is 0 for the front target."

a period time of 1 ms is 1 khz frequency. humans are able in tests to hear 0.01- 0.02 miliseconds delay diffrence between speaker. thats less than 1/ 44.1 khz sample

here is delay to angle diagram and also a test audio example

https://www.sfu.ca/sonic-studio-webda...


I notice when i hear longer time loud, i can not so good detect. but after a rest it is ok. maybe when alwys not hear it happen when hear too loud music longer time.
https://www.hear-it.org/more-young-pe...
"One in four has hearing loss
One in four 18-44-year-olds using headphones reports hearing problems, a study shows. According to an American study, one in four young New York adults aged 18-44 reports hearing loss and hearing problems are found in 23% of people who use headphones at a high volume at least five days a week for four hours a day.

Researchers conclude that if young adults frequently use headphones at a loud volume, they should be prepared to deal with ringing in their ears or hearing loss as a result."

there are more audio hear examples and explain for ITD

http://acousticslab.org/psychoacousti...