Accuracy in sound localization: interactive effects of stimulus bandwidth, duration and rise decay
Keywords:
Acoustic noise, Acoustic waves, Bandwidth, Frequencies, Loudspeakers, Subjective testing, Precedence effect, Sound localization, Speaker identification, Stimulus duration, Stimulus rise decayAbstract
This study investigated the effects of stimulus bandwidth/centre frequency (broadband noise vs one-third octave bands, centred at 500 Hz and 4000 Hz), in interaction with stimulus duration/rise decay time (50/10, 300/10, 300/50 and 380/50 ms) on sound localization. The experiment was conducted in a semi-reverberant sound proof booth. Twelve normal-hearing subjects were tested using a single array of six loudspeakers positioned 60 deg apart in the horizontal plane. Each was presented one block of 120 forced-choice speaker identification trials for each for the twelve listening conditions. Subjects achieved 100% correct in localizing broadband noise, regardless of duration/rise decay. Scores were significantly lower for the one-third octave bands. There was no difference due to frequency for the three longer durations. For the short duration/short rise decay, a relative improvement was observed for the low frequency and a decrement for the high frequency. The results were interpreted with reference to the precedence effect.
Downloads
Published
How to Cite
Issue
Section
License
Copyright on articles is held by the author(s). The corresponding author has the right to grant on behalf of all authors and does grant on behalf of all authors, a worldwide exclusive licence (or non-exclusive license for government employees) to the Publishers and its licensees in perpetuity, in all forms, formats and media (whether known now or created in the future)
i) to publish, reproduce, distribute, display and store the Contribution;
ii) to translate the Contribution into other languages, create adaptations, reprints, include within collections and create summaries, extracts and/or, abstracts of the Contribution;
iii) to exploit all subsidiary rights in the Contribution,
iv) to provide the inclusion of electronic links from the Contribution to third party material where-ever it may be located;
v) to licence any third party to do any or all of the above.
