Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Human echolocation in different situations and rooms: Threshold values Architectural Acoustics: Paper 1aAAa1
KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH.
2017 (English)In: Proceedings of Meetings on Acoustics, Acoustical Society of America , 2017, no 1Conference paper (Refereed)
Abstract [en]

People, especially when blind, use echolocation to detect obstacles, orient themselves and get an awareness of their environment. Echolocation describes how people use reflected sounds to obtain information about their ambient world. Echolocation with long canes while walking is possible but difficult. Different spectral composition of the emitted sounds from canes had no differential effects. Sound recordings in anechoic and conference rooms from non-walking, static situations, later presented in a laboratory showed a better performance in an ordinary room with reflections, than in an anechoic room. Longer sounding sounds resulted in a higher performance than short clicks. Among the difficulties for the blind are how to avoid masking of sounds. There may exist a time gap, acoustic gaze, for how blind people use clicks. The results of previous studies were reanalyzed by using auditory models. Thresholds based on local non-parametric fitting, were determined for distance, pitch, loudness and sharpness. The blind had overall a more sensitive threshold than sighted persons. A few blind are exceptionally high performing. An information-surplus principle' has been proposed. Various information sources are used, but repetition pitch seems more important than loudness for echolocation. Among other sources, timbre may also provide information.

Place, publisher, year, edition, pages
Acoustical Society of America , 2017. no 1
Keywords [en]
Architectural acoustics, Auditory models, Conference rooms, Differential effect, Information sources, Non-parametric, Ordinary rooms, Reflected sounds, Spectral composition, Sonar
National Category
Medical Engineering Production Engineering, Human Work Science and Ergonomics
Identifiers
URN: urn:nbn:se:kth:diva-216446DOI: 10.1121/2.0000536Scopus ID: 2-s2.0-85030161852OAI: oai:DiVA.org:kth-216446DiVA, id: diva2:1164017
Conference
173rd Meeting of Acoustical Society of America, Acoustics 2017 and 8th Forum Acusticum, 25 June 2017 through 29 June 2017
Note

QC 20171208

Available from: 2017-12-08 Created: 2017-12-08 Last updated: 2017-12-08Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Schenkman, Bo

Search in DiVA

By author/editor
Schenkman, Bo
By organisation
Speech, Music and Hearing, TMH
Medical EngineeringProduction Engineering, Human Work Science and Ergonomics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 3 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf