Electroacoustic Calibration for Sound Field Warble Tone Thresholds Walker, Dillon, and Byrne (1984) suggested reference equivalent threshold sound pressure levels (RETSPLs) for warble tones with specific modulation parameter values audited from a test position at the critical distance in a semireverberant sound field. This study evaluated these RETSPLs in two typical audiometric rooms and with typically encountered FM ... Reports
Reports  |   November 01, 1987
Electroacoustic Calibration for Sound Field Warble Tone Thresholds
 
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Article Information
Reports   |   November 01, 1987
Electroacoustic Calibration for Sound Field Warble Tone Thresholds
Journal of Speech and Hearing Disorders, November 1987, Vol. 52, 388-392. doi:10.1044/jshd.5204.388
History: Received May 19, 1986 , Accepted March 16, 1987
 
Journal of Speech and Hearing Disorders, November 1987, Vol. 52, 388-392. doi:10.1044/jshd.5204.388
History: Received May 19, 1986; Accepted March 16, 1987

Walker, Dillon, and Byrne (1984) suggested reference equivalent threshold sound pressure levels (RETSPLs) for warble tones with specific modulation parameter values audited from a test position at the critical distance in a semireverberant sound field. This study evaluated these RETSPLs in two typical audiometric rooms and with typically encountered FM tones. Thresholds were measured under earphones and in two sound fields for 6-11 normal hearers at six test frequencies. Results indicated that there was a small but statistically significant difference between earphone and sound field thresholds in 4 of 24 comparisons. However, in both sound fields, 99% of the sound field thresholds were within 10 dB of the earphone thresholds. It is concluded that these RETSPLs are appropriate for electroacoustic calibration of sound field warble tones similar to those used in this study.

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