To eliminate the necessity to provide any exclusive operation button by easily detecting a desired data position even under an environment in which voice recognizing precision is deteriorated, or even when the same voice index is registered at plural positions.
At the time of retrieving a voice index which is made coincident with a voice from a microphone 21 in a voice index storage memory 5, when the voice index with prescribed similarity or more is extracted, they are sequenced in the order of similarity, and a desired identification code is selected according to the above, and digital information is retrieved based on the identification code. Therefore, a desired data position can be easily detected by preventing any repeated processings due to a recognition error even under an environment in which voice recognizing precision is deteriorated die to a background noise, or even when the same voice index is registered at plural positions. The instruction of an operation related with a retrieval processing by noise input is operated by continuously pressing a a basic storage and reproduction operation button for a prescribed time of longer.
MORITA KOJI
YAMASHITA TOSHIRO
SHIMODA TOSHIAKI
NISHIMOTO YOSHIRO
HARADA KAZUSHIGE
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