FEATURES OF NEUTRALIZED SOUNDS FOR LONG TERM EVALUATION PACS: 43.66 Lj
نویسنده
چکیده
The meaning of a sound may influence its rating significantly. Therefore, a method was proposed, which removes the meaning of sound, keeping the loudness-time function the same. In essence, the sound is analyzed by FTT and, after spectral broadening, resynthesized by IFTT. Since it is impossible to remove the meaning of a sound, keeping all psychoacoustic magnitudes the same, variations are discussed for the sound produced by a noise immission of 20 min duration. For the comparison, loudness, sharpness, fluctuation strength, and roughness are considered as functions of time, and as cumulative distributions. Data for the original sound with meaning are compared to data for the neutralized sound without meaning. While the loudness-time functions of original and neutralized sound are the same, significant differences can occur with respect to roughness.
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