Virtual Acoustic Displays for Teleconferencing: Intelligibility Advantage for “Telephone-Grade” Audio

摘要

Speech intelligibility was evaluated using a virtual acoustic (3-D audio) display using the method specified by ANSI (53.2-1989). Ten subJects were evaluated with stimuli enter unfiltered or low-pass filtered at 4-kHz. Results show that virtual acoustic techniques are advantageous for both full-bandwidth (44. l-kHz sampling rate) and low-bandwidth (8-kHz sanipling rate) “telephone-grade” teleconferencing systems.