In the study of detecting sonar signals with complex time frequency compositions under a noise-background by human.auditory system, the problem of auditory responses to the transitions of signal frequencies has been e...In the study of detecting sonar signals with complex time frequency compositions under a noise-background by human.auditory system, the problem of auditory responses to the transitions of signal frequencies has been examined through a number of testes. According to the results from measurements within a frequency region of 850-1130 Hz, an equation (τ.ΔF = 1 - 2) defining the ambiguous region of responding to frequency transitions by human auditory system is found, where ΔF and τ are the difference and duration of the transition between two frequencies, respectively. When τ·ΔF≤1, the human auditory system can hardly sense the transition between two frequencies. However man can clearly sense not only the transition but the different tonalities of two freqencies when τ·ΔF≥2.展开更多
文摘In the study of detecting sonar signals with complex time frequency compositions under a noise-background by human.auditory system, the problem of auditory responses to the transitions of signal frequencies has been examined through a number of testes. According to the results from measurements within a frequency region of 850-1130 Hz, an equation (τ.ΔF = 1 - 2) defining the ambiguous region of responding to frequency transitions by human auditory system is found, where ΔF and τ are the difference and duration of the transition between two frequencies, respectively. When τ·ΔF≤1, the human auditory system can hardly sense the transition between two frequencies. However man can clearly sense not only the transition but the different tonalities of two freqencies when τ·ΔF≥2.
