{"id":6071,"date":"2026-07-01T10:14:31","date_gmt":"2026-07-01T17:14:31","guid":{"rendered":"https:\/\/www.iths.org\/participate\/?p=6071"},"modified":"2026-07-01T10:14:31","modified_gmt":"2026-07-01T17:14:31","slug":"detection-of-environmental-sounds","status":"publish","type":"post","link":"https:\/\/www.iths.org\/participate\/detection-of-environmental-sounds\/","title":{"rendered":"Detection of environmental sounds"},"content":{"rendered":"
<\/div>\n

This study takes about 25 minutes and is $15 in compensation for your time. You will wear a pair of insert earphones and listen to a series of audio clips and indicate on a laptop if a siren was present or not.<\/p>\n

Newer hearing technologies can selectively reduce (\u201csuppress\u201d) unwanted sounds in a listener\u2019s environment by large amounts. These systems are evaluated on how well they isolate the sounds a listener wants to hear, but not on what a listener may lose – specifically, whether an environmental sound that has been suppressed can still be detected. This study measures that limit.<\/p>\n

The objective is to determine how strongly a target environmental sound (a recorded emergency-vehicle siren) can be digitally reduced in level, relative to a background noise, before normal-hearing adults can no longer reliably detect it. We will characterize detection performance across a range of suppression levels and estimate the suppression level at which detection falls to a defined threshold.<\/p>\n

We hypothesize that detection will decline in an orderly way as suppression increases, and that there is a measurable suppression level beyond which the sound is no longer reliably detected. The results define a \u201csensory floor\u201d for environmental-sound awareness that is relevant to the safe design of these technologies.<\/p>\n

Participant Eligibility<\/h3>\n

\u2022 Ages 18\u201335
\n\u2022 Native or early-childhood English speaker (learned before age 5)
\n\u2022 Normal hearing (no hearing loss, ear surgery, or ear infections)
\n\u2022 No history of neurological conditions or speech\/language disorders
\n\u2022 Currently healthy (no active cold\/sinus\/ear infection)
\n\u2022 Able to wear soft insert earphones comfortably<\/p>\n

Contact<\/h3>\n

Riya Yerramilli
\n(425) 922-8882<\/p>\n

<\/p>\n

Additional Study Details<\/h3>\n

Full Study Title<\/strong>
\nDetection of environmental sounds under simulated spatial suppression in normal-hearing adults
\n<\/span><\/p>\n

Study ID:<\/strong> STUDY00025879<\/div>\n
ClinicalTrials.gov Link:<\/strong><\/div>\n
<\/div>\n
Start Date:<\/strong> 06\/15\/2026<\/div>\n
End Date:<\/strong> 06\/01\/2027<\/div>\n
<\/div>\n

Investigator(s)<\/strong>
\nGavriel Kohlberg
\nDenzel Lambino
\n<\/span>
\nAccepts Healthy Volunteers?<\/strong>
\nYes<\/span><\/p>\n

Study Site(s)<\/strong><\/p>\n

\n

Virginia Merrill Bloedel Hearing Research Center\/CHDD Clinic Building<\/h4>\n

1701 NE Columbia Road, Seattle, WA
\nSeattle, Washington 98195<\/p>\n<\/div>\n

\n

<\/h4>\n<\/div>\n
<\/div>\n

<\/div>\n","protected":false},"excerpt":{"rendered":"

This study takes about 25 minutes and is $15 in compensation for your time. You will wear a pair of insert earphones and listen to a series of audio clips and indicate on a laptop if a siren was present or not. Newer hearing technologies…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-6071","post","type-post","status-publish","format-standard","hentry","category-healthy-volunteers"],"_links":{"self":[{"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/posts\/6071","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/comments?post=6071"}],"version-history":[{"count":3,"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/posts\/6071\/revisions"}],"predecessor-version":[{"id":6076,"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/posts\/6071\/revisions\/6076"}],"wp:attachment":[{"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/media?parent=6071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/categories?post=6071"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iths.org\/participate\/wp-json\/wp\/v2\/tags?post=6071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}