scholarly journals Median-plane sound localization as a function of the number of spectral channels using a channel vocoder

2010 ◽  
Vol 127 (2) ◽  
pp. 990-1001 ◽  
Author(s):  
Matthew J. Goupell ◽  
Piotr Majdak ◽  
Bernhard Laback
Keyword(s):  
Sound Localization ◽  
Median Plane ◽  
Plane Sound ◽  
Spectral Channels

Sound Localization Using an Acoustical Telepresence Robot: TeleHead II

2008 ◽  
Vol 17 (4) ◽  
pp. 392-404 ◽  
Author(s):  
Iwaki Toshima ◽  
Shigeaki Aoki ◽  
Tatsuya Hirahara
Keyword(s):  
Sound Localization ◽  
Head Movement ◽  
Transfer Functions ◽  
Median Plane ◽  
Head Width ◽  
Head Shape ◽  
Telepresence Robot ◽  
Plane Sound ◽  
The Difference ◽  
Measurement Metric

TeleHead I is an acoustical telepresence robot that we built on the basis of the concept that remote sound localization could be best achieved by using a user-like dummy head whose movement synchronizes with the user's head movement in real time. We clarified the characteristics of the latest version of TeleHead I, TeleHead II, and verified the validity of this concept by sound localization experiments. TeleHead II can synchronize stably with the user's head movement with a 120-ms delay. The driving noise level measured through headphones is below 24 dB SPL from 1 to 4 kHz. The shape difference between the dummy head and the user is about 3% in head width and 5% in head length. An overall measurement metric indicated that the difference between the head-related transfer functions (HRTFs) of the dummy head and the modeled listener is about 5 dB. The results of the sound localization experiments using TeleHead II clarified that head movement improves horizontal-plane sound localization performance even when the dummy head shape differs from the user's head shape. In contrast, the results for head movement when the dummy head shape and user head shape are different were inconsistent in the median plane. The accuracy of sound localization when using the same-shape dummy head with movement tethered to the user's head movement was always good. These results show that the TeleHead concept is acceptable for building an acoustical telepresence robot. They also show that the physical characteristics of TeleHead II are sufficient for conducting sound localization experiments.

Predicting the effect of hearing-protection devices on horizontal-plane sound localization

2021 ◽  
Vol 150 (4) ◽  
pp. A340-A340
Author(s):  
Nathaniel J. Spencer ◽  
Zachariah N. Ennis ◽  
Natalie Jackson ◽  
Brian D. Simpson ◽  
Eric R. Thompson
Keyword(s):  
Sound Localization ◽  
Horizontal Plane ◽  
Hearing Protection ◽  
Plane Sound ◽  
Protection Devices

On sound localization cues in the median plane

1978 ◽  
Vol 64 (S1) ◽  
pp. S35-S35
Author(s):  
M. Morimoto ◽  
K. Nomachi
Keyword(s):  
Sound Localization ◽  
Median Plane

Effect of training in sound localization in the median plane

1975 ◽  
Vol 57 (S1) ◽  
pp. S37-S37
Author(s):  
Y. Yorifuji ◽  
M. Morimoto ◽  
Y. Ando
Keyword(s):  
Sound Localization ◽  
Median Plane

Gravitoinertial Force Magnitude and Direction Influence Head-Centric Auditory Localization

2001 ◽  
Vol 85 (6) ◽  
pp. 2455-2460 ◽  
Author(s):  
Paul DiZio ◽  
Richard Held ◽  
James R. Lackner ◽  
Barbara Shinn-Cunningham ◽  
Nathaniel Durlach
Keyword(s):  
Sound Localization ◽  
Acoustic Stimulus ◽  
Median Plane ◽  
Broadband Noise ◽  
Auditory Localization ◽  
Slow Rotation ◽  
Angular Deviation ◽  
Midsagittal Plane ◽  
Gravitoinertial Force ◽  
Straight Ahead

We measured the influence of gravitoinertial force (GIF) magnitude and direction on head-centric auditory localization to determine whether a true audiogravic illusion exists. In experiment 1, supine subjects adjusted computer-generated dichotic stimuli until they heard a fused sound straight ahead in the midsagittal plane of the head under a variety of GIF conditions generated in a slow-rotation room. The dichotic stimuli were constructed by convolving broadband noise with head-related transfer function pairs that model the acoustic filtering at the listener's ears. These stimuli give rise to the perception of externally localized sounds. When the GIF was increased from 1 to 2 g and rotated 60° rightward relative to the head and body, subjects on average set an acoustic stimulus 7.3° right of their head's median plane to hear it as straight ahead. When the GIF was doubled and rotated 60° leftward, subjects set the sound 6.8° leftward of baseline values to hear it as centered. In experiment 2, increasing the GIF in the median plane of the supine body to 2 g did not influence auditory localization. In experiment 3, tilts up to 75° of the supine body relative to the normal 1 g GIF led to small shifts, 1–2°, of auditory setting toward the up ear to maintain a head-centered sound localization. These results show that head-centric auditory localization is affected by azimuthal rotation and increase in magnitude of the GIF and demonstrate that an audiogravic illusion exists. Sound localization is shifted in the direction opposite GIF rotation by an amount related to the magnitude of the GIF and its angular deviation relative to the median plane.

Sign in / Sign up

Export Citation Format

Share Document