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    • 3. 发明授权
    • Speech recognition method and system
    • 语音识别方法和系统
    • US06411929B1
    • 2002-06-25
    • US09625855
    • 2000-07-26
    • Kazuyoshi IshiwatariKazuo KondoShinji Wakisaka
    • Kazuyoshi IshiwatariKazuo KondoShinji Wakisaka
    • G10L1500
    • G10L15/08G10L2015/025
    • Frames making up an input speech are each collated with a string of phonemes representing speech candidates to be recognized, whereby evaluation values regarding the phonemes are computed. The frames are each compared with part of the phoneme string so as to reduce computations and memory capacity required in recognizing the input speech based on the evaluation values. That is, each frame is compared with a portion of the phoneme string to acquire an evaluation value for each phoneme. If the acquired evaluation value meets a predetermined condition, part of the phonemes to be collated with the next frame are changed. Illustratively, if the evaluation value for the phoneme heading a given portion of collated phonemes is smaller than the evaluation value of the phoneme which terminates that phoneme portion, then the head phoneme is replaced by the next phoneme. The new portion of phonemes obtained by the replacement is used for collation with the next frame.
    • 构成输入语音的帧各自与表示要识别的语音候选的一系列音素进行对照,由此计算关于音素的评估值。 每个帧都与音素串的一部分进行比较,以便减少基于评估值识别输入语音所需的计算和存储器容量。 也就是说,将每帧与音素串的一部分进行比较,以获得每个音素的评估值。 如果所获取的评估值满足预定条件,则与下一帧对照的一部分音素被改变。 说明性地,如果引导整理音素的给定部分的音素的评价值小于终止该音素部分的音素的评价值,则头音素被下一个音素代替。 通过替换获得的新部分音素被用于与下一帧进行核对。