The assistant listening signal processing unit which forms the 1st and 2nd output signal where frequency characteristic differs mutually from the input signal among the auditory filters of the receiving person who the assistant listening processor (100), the audio input section which accepts the input of sound (101 and 121) with, the audio input section (101 and 121) designates the sound which is input as the input signal, consists of the plural hypothetical band pass filters, on the basis of the quality of the wide band passing filter bandwidth, (104 and 124) with, the assistant listening signal processing unit (104) with the 1st output which is formedThe 2nd voice response section which is output to Yuuzi of the receiving person the 1st voice response section which is output to the left ear of the receiving person the signal, as sound (106) with, the assistant listening signal processing unit (124) with the 2nd output signal which is formed, as a sound (126) with it has.
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