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    • 7. 发明授权
    • Encoding method for syllables
    • 音节编码方法
    • US5208863A
    • 1993-05-04
    • US608376
    • 1990-11-02
    • Atsushi SakuraiJunichi TamuraTetsuo Kosaka
    • Atsushi SakuraiJunichi TamuraTetsuo Kosaka
    • G10L13/06G10L15/02G10L19/00
    • G10L15/02
    • A method for encoding syllables of a language, particularly the Japanese language, and for facilitating the extraction of sound codes from the input syllables, for voice recognition or voice synthesis includes the step of providing a syllable classifying table, in which each syllable is represented by an upper byte code indicating the consonant part of the syllable and a lower byte code indicating the non-consonant part of the syllable. The consonants constitute a first category of data classified by phonetic features, while the non-consonants constitute a second category of data classified by phonetic features, so that the extraction of consonant or non-consonant sounds can be made by a search in only the first or the second categories. The encoding of diphthongs are made in such a manner that those containing the same vowel have the same remainder corresponding to the code of this vowel, when the codes are divided by the number of vowels contained in the second category, so that the extraction of a vowel from diphthongs can be achieved by a simple mathematical division.
    • 用于编码语言,特别是日语的音节的方法,以及用于便于从输入音节提取声音代码,用于语音识别或语音合成的方法包括提供音节分类表的步骤,其中每个音节由 指示音节的辅音部分的高字节代码和表示音节的非辅音部分的低字节代码。 辅音构成了以语音特征分类的第一类数据,而非辅音构成了以语音特征分类的第二类数据,因此可以仅通过搜索第一类搜索辅音或非辅音 或第二类。 双符号的编码是这样进行的,即当包含同一元音的那些元素具有与该元音的代码相同的余数时,当代码除以第二类别中包含的元音数量,从而提取 来自diphthongs的元音可以通过简单的数学部分来实现。
    • 8. 发明授权
    • Method and apparatus for distinguishing speech from noise
    • 用于区分语音与噪声的方法和装置
    • US06393396B1
    • 2002-05-21
    • US09359398
    • 1999-07-23
    • Kenichiro NakagawaYasuhiro KomoriTetsuo Kosaka
    • Kenichiro NakagawaYasuhiro KomoriTetsuo Kosaka
    • G01L1520
    • G10L15/20G10L21/0232G10L2021/02163
    • An apparatus and method to successively extract a proper speech zone from speech inputted in such a fashion that noise is mixed in a speech to be recognized, and to remove noise from the detected speech zone. To this end, a noise position is estimated from an input waveform, a speech zone is detected from a speech inputted subsequently by using power information of speech at the estimated noise position, and noise is removed from the speech in the detected speech zone by using spectrum information of the speech at the estimated noise position. Further, the estimated noise zone is updated as appropriate by using a result of comparison between the power information of the input speech and the power information of the speech in the estimated noise zone so that the noise position is always properly estimated.
    • 一种连续提取来自语音混合语音输入的语音的适当语音区域的装置和方法,用于从被检测的语音区域中去除噪声。 为此,根据输入波形估计噪声位置,通过使用估计噪声位置处的语音功率信息随后输入的语音来检测语音区域,并通过使用检测到的语音区域中的语音消除噪声 估计噪声位置处的语音频谱信息。 此外,通过使用输入语音的功率信息和估计噪声区域中的语音的功率信息之间的比较结果,适当地更新估计噪声区域,从而总是适当地估计噪声位置。