[Detection of the non-simultaneity of the tones in a 2-tone signal].

In the middle frequency range (250--4870 Hz) the threshold of non-simultaneity of the abruptly "switched on" tone does not depend on the difference of tone frequencies and slightly depends on the sequence of tones. Increasing time of tones rising increases the threshold and causes obvious dependence of the threshold on the sequence of tones. In case of recognition of the tone sequence, the interval between their onsets must considerably exceed the threshold of non-simultaneity of "switched on" tones.