Topic While listening the regenerative sound of backward sound of the response statement and the like, the occasion where it does the utterance exercise of wording of preferential sound of the question statement and the like which corresponds to this, the teaching aid for conversation study which can inform about the utterance start timing clearly is offered.SolutionsSeparating each aural signal of backward aural signal Sb of preferential aural signal Sa of the question statement and the like and the response statement etc which answers to the said question statement, recording with to two channels Rch and Lch where record media becomes independent sequentially, reproducible alternately corresponding the notification correspondence number Sc which informs about the utterance exercise start timing of the said preferential sound which corresponds to the said backward sound in the teaching aid for conversation study of dialogism which becomes, to the channel of signal record side of the said backward sound immediately before the record start dot of the said preferential aural signal, it makes record. Choice figure Drawing 2
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