Preliminary Study on Recommended Time Duration of Source Signals to Be Analyzed, in Relation to Its Effective Duration of the Auto-Correlation Function

A Theory of Primary Sensations and Spatial Sensations Measuring Environmental Noise

“…This duration 2¹ should be selected covering at least the minimum value of e!ective duration, ( C ) KGL , of the running ACF [19]. The noise piece indicating ( C ) KGL contains the most rapid movement in the signal; thus, this particular piece in#uences most greatly the subjective responses.…”

“…The subjective preference as well as timbre can be described by the use of the minimum value of C [22, 23; see also Appendix A]. Concerning a recommended short-term-integration time, it is given in this special issue [19], such that…”

Correlation Factors Describing Primary and Spatial Sensations of Sound Fields

“…where ðt e Þ min is the minimum value of t e obtained by analyzing the running ACF [17]. This implies that the time constant represented by ''fast'' or ''slow'' of the sound level meter is deeply related to such a temporal window depending on the effective duration of ACF.…”

A comparison of methods to compute the “effective duration” of the autocorrelation function and an alternative proposal

“…Ando discussed the possibility to model the temporal integration of ACF on the basis of a "psychological present." 25 Mouri et al 23 proposed an optimal algorithm for the choice of the duration of the temporal integration. Other kinds of analysis related to different methods of integration have been presented by Kato et al 16 Others techniques of envelope extraction are treated in the field of monaural detection.…”

“…Fourdouiev 8 performed his envelope analysis by using a tape correlator. In the following literature, 10,11,13,16,23 the envelope analysis of ACF is numerical and based on A-weighted signals. Three different algorithms for the envelope extraction have been proposed by Ando et al 24 for the extraction of s e .…”