Print Email Facebook Twitter Using the Speech Transmission Index for predicting non-native speech intelligibility Title Using the Speech Transmission Index for predicting non-native speech intelligibility Author van Wijngaarden, S.J. Bronkhorst, A.W. Houtgast, T. Steeneken, H.J.M. TNO Technische Menskunde Publication year 2004 Abstract While the Speech Transmission Index ~STI! is widely applied for prediction of speech intelligibility in room acoustics and telecommunication engineering, it is unclear how to interpret STI values when non-native talkers or listeners are involved. Based on subjectively measured psychometric functions for sentence intelligibility in noise, for populations of native and non-native communicators, a correction function for the interpretation of the STI is derived. This function is applied to determine the appropriate STI ranges with qualification labels ('bad' - 'excellent') for specific populations of non-natives. The correction function is derived by relating the non-native psychometric function to the native psychometric function by a single parameter (v). For listeners, the nparameter is found to be highly correlated with linguistic entropy. It is shown that the proposed correction function is also valid for conditions featuring bandwidth limiting and reverberation. Subject Acoustics and AudiologyAcoustic noiseBandwidthCorrelation methodsLinguisticsSpeechPsychometric functionsSpeech transmission index (STI)Acousticsacousticsbiological environmentacousticsarticlecorrection functionengineeringhearinginterpersonal communicationlinguisticslisteningmeasurementnoisenon native speech communicationpredictionpriority journalpsychometryspeechspeech discriminationspeech intelligibilityspeech transmission indextelecommunicationHumansLogistic ModelsModels, BiologicalMultilingualismPerceptual MaskingReproducibility of ResultsSpeech AcousticsSpeech IntelligibilitySpeech PerceptionSpeech Production Measurement To reference this document use: http://resolver.tudelft.nl/uuid:065a1f93-1b4b-4752-8bfa-5eac707a3b7e DOI https://doi.org/10.1121/1.1647145 TNO identifier 12879 Source Journal of the Acoustical Society of America, 115 (3), 1281-1291 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.