To allow an operation instruction by an operator's voice to be recognized accurately.SOLUTION: Provided is a voice recognition input device in which a voice recognition data table is stored in which a plurality of voice commands are associated with one operation command and a weighting coefficient corresponding to the frequency of use of the voice command is recorded for each voice command, voice recognition processing is performed with voice input as a recognition target, the voice command is output as a result of the voice recognition processing, and the voice command is converted into the operation command recorded corresponding to the voice command referring to the voice recognition data table to output the operation command to an external device. In this case, a plurality of voice command candidates that can correspond to voice input are selected and each of the plurality of voice command candidates is multiplied by the weighting coefficient, thereby outputting the most probable voice command as a result of the voice recognition processing with respect to the voice input.SELECTED DRAWING: Figure 1【課題】 術者の音声による操作指示を正確に認識させる。【解決手段】 １の操作コマンドについて複数の音声コマンドを対応付け、且、音声コマンド毎に当該音声コマンドの使用頻度に応じた重み係数を記録した音声認識データテーブルを記憶し、音声入力を認識対象として音声認識処理を行い、音声コマンドを音声認識処理の結果として出力し、音声認識データテーブルを参照して、音声コマンドを該音声コマンドに対応して記録された操作コマンドに変換し、操作コマンドを外部機器に出力する。この場合において、音声入力に相当し得る音声コマンド候補を複数選出し、複数の音声コマンド候補夫々に重み係数を乗じることにより最も確からしい音声コマンドを音声入力に対する音声認識処理の結果として出力する音声認識入力装置を提供する。【選択図】図１
