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- Q1432854 subject Q5881968.
- Q1432854 subject Q6158623.
- Q1432854 subject Q7013146.
- Q1432854 subject Q7157166.
- Q1432854 abstract "A head-related transfer function (HRTF) is a response that characterizes how an ear receives a sound from a point in space; a pair of HRTFs for two ears can be used to synthesize a binaural sound that seems to come from a particular point in space. It is a transfer function, describing how a sound from a specific point will arrive at the ear (generally at the outer end of the auditory canal). Some consumer home entertainment products designed to reproduce surround sound from stereo (two-speaker) headphones use HRTFs. Some forms of HRTF-processing have also been included in computer software to simulate surround sound playback from loudspeakers.Humans have just two ears, but can locate sounds in three dimensions – in range (distance), in direction above and below, in front and to the rear, as well as to either side. This is possible because the brain, inner ear and the external ears (pinna) work together to make inferences about location. This ability to localize sound sources may have developed in humans and ancestors as an evolutionary necessity, since the eyes can only see a fraction of the world around a viewer, and vision is hampered in darkness, while the ability to localize a sound source works in all directions, to varying accuracy, regardless of the surrounding light.Humans estimate the location of a source by taking cues derived from one ear (monaural cues), and by comparing cues received at both ears (difference cues or binaural cues). Among the difference cues are time differences of arrival and intensity differences. The monaural cues come from the interaction between the sound source and the human anatomy, in which the original source sound is modified before it enters the ear canal for processing by the auditory system. These modifications encode the source location, and may be captured via an impulse response which relates the source location and the ear location. This impulse response is termed the head-related impulse response (HRIR). Convolution of an arbitrary source sound with the HRIR converts the sound to that which would have been heard by the listener if it had been played at the source location, with the listener's ear at the receiver location. HRIRs have been used to produce virtual surround sound. Template:For example?The HRTF is the Fourier transform of HRIR. The HRTF is also sometimes known as the anatomical transfer function (ATF).HRTFs for left and right ear (expressed above as HRIRs) describe the filtering of a sound source (x(t)) before it is perceived at the left and right ears as xL(t) and xR(t), respectively.The HRTF can also be described as the modifications to a sound from a direction in free air to the sound as it arrives at the eardrum. These modifications include the shape of the listener's outer ear, the shape of the listener's head and body, the acoustic characteristics of the space in which the sound is played, and so on. All these characteristics will influence how (or whether) a listener can accurately tell what direction a sound is coming from.".
- Q1432854 thumbnail HRTF.svg?width=300.
- Q1432854 wikiPageExternalLink hrtf.html.
- Q1432854 wikiPageExternalLink tutorial.
- Q1432854 wikiPageExternalLink index.html.
- Q1432854 wikiPageExternalLink KEMAR.html.
- Q1432854 wikiPageExternalLink www.audiogroup.web.fh-koeln.de.
- Q1432854 wikiPageExternalLink air.
- Q1432854 wikiPageExternalLink index.php?option=com_content&view=article&id=608:ari-hrtf-database&catid=158:resources-items&Itemid=606&lang=en.
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- Q1432854 wikiPageWikiLink Q5881968.
- Q1432854 wikiPageWikiLink Q6158623.
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- Q1432854 wikiPageWikiLink Q7013146.
- Q1432854 wikiPageWikiLink Q7157166.
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- Q1432854 comment "A head-related transfer function (HRTF) is a response that characterizes how an ear receives a sound from a point in space; a pair of HRTFs for two ears can be used to synthesize a binaural sound that seems to come from a particular point in space. It is a transfer function, describing how a sound from a specific point will arrive at the ear (generally at the outer end of the auditory canal).".
- Q1432854 label "Head-related transfer function".
- Q1432854 depiction HRTF.svg.