作为频率辨别模型的瞬时频率强度加权平均值。

Intensity-weighted average of instantaneous frequency as a model for frequency discrimination.

作者信息

Anantharaman J N, Krishnamurthy A K, Feth L L

机构信息

Department of Electrical Engineering, Ohio State University, Columbus 43210.

出版信息

J Acoust Soc Am. 1993 Aug;94(2 Pt 1):723-9. doi: 10.1121/1.406889.

DOI:10.1121/1.406889

PMID:8370877

Abstract

The intensity-weighted average of instantaneous frequency (IWAIF) is developed as a model to predict listener performance in tasks primarily requiring frequency discrimination. IWAIF is closely related to the envelope weighted average of instantaneous frequency (EWAIF) model proposed by Feth for similar tasks. The primary difference is that the IWAIF model uses intensity (envelope squared) as the weighting function instead of the envelope. The advantages of IWAIF over EWAIF are that (a) it has a convenient frequency domain interpretation; and (b) it is much simpler to compute than the EWAIF. The IWAIF is the "center of gravity" of the energy spectral density function of the signal.

摘要

瞬时频率强度加权平均值（IWAIF）被开发为一种模型，用于预测主要需要频率辨别能力的任务中的听者表现。IWAIF与Feth针对类似任务提出的瞬时频率包络加权平均值（EWAIF）模型密切相关。主要区别在于IWAIF模型使用强度（包络平方）作为加权函数，而非包络。IWAIF相对于EWAIF的优势在于：（a）它具有方便的频域解释；（b）其计算比EWAIF简单得多。IWAIF是信号能量谱密度函数的“重心”。