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Measurement of Oral-Binaural Room Impulse Response by Singing Scales

Oral-binaural room impulse responses (OBRIRs) are the transfer functions from mouth to ears measured in a room. Modulated by many factors, OBRIRs contain information for the study of stage acoustics from the performer’s perspective and can be used for auralization. Measuring OBRIRs on a human is, however, a cumbersome and time-consuming process. In the current study some issues of the OBRIR measurement on humans were addressed in a series of measurements. With in-ear and mouth microphones volunteers sang scales, and a simple post-processing scheme was used to re?ne the transfer functions. The results suggest that OBRIRs may be measured consistently by using the proposed protocol, where only 4~8 diatonic scales need to be sung depending on the target signal-to-noise ratio.

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