Abstract:
The intensity weighted average of instantaneous frequency (IWAIF) has been used to model listener performance in complex signal discrimination [Anantharaman et al., J. Acoust. Soc. Am. 94, 723--729 (1993)]. Short-term [Krishnamurthy and Feth, J. Acoust. Soc. Am. 93, 2387(A) (1993)] and multichannel [Mokheimer et al., IEEE Proc. First Intl. Conf. on Electronics Circuits and Systems, Cairo, Egypt (1994)] implementations of the model have been proposed. Time-frequency representations (TFRs) offer a convenient way to process signals over the time-frequency plane. TFRs can be used to compute the IWAIF. TFRs can also be used to compute the short-term IWAIF and the multi-channel IWAIF. These will be presented along with preliminary developments of both the short-term IWAIF and the multichannel IWAIF. The necessary properties of the TFRs to be suitable for use in these models will be discussed. [Work supported by a grant from AFOSR.]