Time vs Intensity in Sound Localization

Sound-intensity-dependent compensation for the small interaural time difference cue for sound source localization.

Interaural time difference (ITD) is a major cue for sound source localization. However, animals with small heads experience small ITDs, making ITD detection difficult, particularly for low-frequency sound. Here, we describe a sound-intensity-dependent mechanism for compensating for the small ITD cues in the coincidence detector neurons in the nucleus laminaris (NL) of the chicken aged from 3 to...

Sound Bridge Localization in Buildings by Structure - borne Sound Intensity Measurements *

Sound Bridge Localization in Buildings by Structure-borne Sound Intensity Measurements Summary A localization procedure is described which per· mits fast and accurate localization of point-like sound bridges in buildings by means of measurements of the . vibrational intensity at a few points on the wall or : floor. In a laboratory experiment a resolution of · about 10 em was achieved with seven...

Sound Localization and Interaural Time Sensitivity with Bilateral Cochlear Implants

Bilateral cochlear implantation is becoming more common as clinicians attempt to provide better sound-source localization and speech reception in noise for cochlear implant (CI) users. While some improvement over the abilities of monolateral implantees has been documented, bilateral performance for CI users is far from that achieved with normal hearing. Identifying factors that limit bilateral ...

Real-time sound localization using field-programmable gate arrays

This paper presents a single FPGA implementation of a realtime sound localization system using two microphones. The implementation, utilizing a cross-correlation technique based on a modified version of the phase transform, successfully localizes sound sources in noisy environments with as low an SNR as 10dB. Using the same algorithm and similar hardware architecture, it is shown that up to 5 p...

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