Information retrieving method and apparatus

Details Information retrieving method and apparatus Information retrieving method and apparatus

2008-03-18

2008-03-18

{hacek over (S)}mits, Talivaldis Ivars (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S231000, C704S251000, C379S202010

Reexamination Certificate

active

07346508

ABSTRACT:
A speaker of encoded speech data recorded in a semiconductor storage device in an IC recorder is to be retrieved easily. An information receiving unit10in a speaker retrieval apparatus1reads out the encoded speech data recorded in a semiconductor storage device107in an IC recorder100. A speech decoding unit12decodes the encoded speech data. A speaker frequency detection unit13discriminates the speaker based on a feature of the speech waveform decoded to find the frequency of conversation (frequency of occurrence) of the speaker in a preset time interval. A speaker frequency graph displaying unit14displays the speaker frequency on a picture as a two-dimensional graph having time and the frequency as two axes. A speech reproducing unit16reads out the portion of the encoded speech data corresponding to a time position or a time range specified by a reproducing position input unit15based on this two-dimensional graph from the storage device11and decodes the read-out data to output the decoded data to a speech outputting unit17.

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