title: Temporal fine structure mediated recognition of speech in the presence of multitalker babble.
abstract: This experiment investigated the mechanisms of temporal fine structure (TFS) mediated speech recognition in multi-talker babble. The signal-to-noise ratio 50 (SNR-50) for naive-listeners was measured when the TFS was retained in its original form (ORIG-TFS), the TFS was time reversed (REV-TFS), and the TFS was replaced by noise (NO-TFS). The original envelope was unchanged. In the REV-TFS condition, periodicity cues for stream segregation were preserved, but envelope recovery was compromised. Both the mechanisms were compromised in the NO-TFS condition. The SNR-50 was lowest for ORIG-TFS followed by REV-TFS, which was lower than NO-TFS. Results suggest both stream segregation and envelope recovery aided TFS mediated speech recognition.
authors: Department of Audiology and Speech Language Pathology, Kasturba Medical College (Manipal University), Mangalore, India.
authors: Pitchai Muthu Arivudai
authors: PM
authors: Nambi
authors: The MARCS Institute for Brain, Behaviour and Development, Western Sydney University, Sydney Australia arivudai.nambi@manipal.edu, Y.Mahajan@westernsydney.edu.au, nikita_spnhg@yahoo.com, and bhat.js@manipal.edu.
authors: Yatin
authors: Y
authors: Mahajan
authors: Department of Audiology and Speech Language Pathology, Kasturba Medical College (Manipal University), Mangalore, India.
authors: Nikita
authors: N
authors: Francis
authors: Department of Audiology and Speech Language Pathology, Kasturba Medical College (Manipal University), Mangalore, India.
authors: Jayashree S
authors: JS
authors: Bhat
mesh_terms: D000161:Acoustic Stimulation; D009622:Noise; D013060:Speech; D013067:Speech Perception