Browsing National Acoustic Laboratories by Author "Freeston, Katrina"
Now showing items 1-12 of 12
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Cognitive Spare Capacity: Evaluation data and its association with comprehension of dynamic conversations
Best, Virginia; Freeston, Katrina; Boyce, Alexandra; Keidser, Gitte (Frontiers in Psychology, 2015)It is well established that communication involves the working memory system, which becomes increasingly engaged in understanding speech as the input signal degrades. The more resources allocated to recovering a degraded ... -
Development and preliminary evaluation of a new test of ongoing speech comprehension
Best, Virginia; Keidser, Gitte; Buchholz, Jorg; Freeston, Katrina (2015)Objective: The overall goal of this work is to create new speech perception tests that more closely resemble real world communication and offer an alternative or complement to the commonly used sentence recall test. Design: ... -
The effects of adding realism to a conventional speech-in-noise test
Best, Virginia; Keidser, Gitte; Buchholz, Jorg; Freeston, Katrina (2014)The speech reception threshold (SRT) is routinely used in research and in the clinic to assess people’s ability to understand speech in noise. The overall goal of this work was to determine whether introducing realistic ... -
Evaluation of the NAL dynamic conversations test in older listeners with hearing loss
Best, Virginia; Keidser, Gitte; Freeston, Katrina; Buchholz, Jorg (International Journal of Audiology, 2017)The National Acoustic Laboratories Dynamic Conversations Test (NAL-DCT) is a new test of speech comprehension that incorporates a realistic environment and dynamic speech materials that capture certain features of everyday ... -
An evaluation of the performance of two binaural beamformers in complex and dynamic multitalker environments
Best, Virginia; Mejia, Jorge; Freeston, Katrina; Van Hoesel, Richard J.; Dillon, Harvey (International Journal of Audiology, 2015)Objective: Binaural beamformers are super-directional hearing aids created by combining microphone outputs from each side of the head. While they offer substantial improvements in SNR over conventional directional hearing ... -
An examination of speech reception thresholds measured in a simulated reverberant cafeteria environment
Best, Virginia; Keidser, Gitte; Freeston, Katrina; Buchholz, Jorg (International Journal of Audiology, 2014)There is increasing demand in the hearing research community for the creation of laboratory environments that better simulate challenging real-world listeneing envrionments. -
An examination of speech reception thresholds measured in a simulated reverberant cafeteria environment
Best, Virginia; Keidser, Gitte; Buchholz, Jorg; Freeston, Katrina (2015)Objective: There is increasing demand in the hearing research community for the creation of laboratory environments that better simulate challenging real-world listening environments. The hope is that the use of such ... -
Identification of Conductive Hearing Loss Using Air Conduction Tests Alone: Reliability and Validity of an Automatic Test Battery
Convery, Elizabeth; Keidser, Gitte; Seeto, Mark; Freeston, Katrina; Zhou, Dan; Zhou, Dan; Zhou, Dan; Dillon, Harvey (Lippincott Williams & Wilkins., 2014-01)The primary objective of this study was to determine whether a combination of automatically administered pure-tone audiometry and a tone-in-noise detection task, both delivered via an air conduction (AC) pathway, could ... -
Introducing the NAL Dynamic Conversations Test: Development and Validation
Keidser, Gitte; Best, Virginia; Freeston, Katrina; Buchholz, Jorg (2016) -
Otoacoustic emission findings from a large group of young people, and their relationship to other audiological findings
Carter, Lyndal; Freeston, Katrina; Macoun, Denise; Pang, Jermy; Seeto, Mark; Williams, Warwick; Dillon, Harvey (2012) -
Prediction of the air-bone gap: can it be done without a bone conductor?
Convery, Elizabeth; Freeston, Katrina; Dhou, Dan; Keidser, Gitte; Dillon, Harvey (2012) -
Towards more cognitively challenging speech tests
Best, Virginia; Keidser, Gitte; Buchholz, Jorg; Freeston, Katrina (2013)Speech tests are often poor predictors of the performance of individual listeners in the real world. This may be in part because they do not adequately engage all of the auditory and cognitive processes involved in real ...