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    • 9. 发明授权
    • Classification of audio signals
    • 音频信号分类
    • US08438019B2
    • 2013-05-07
    • US11063664
    • 2005-02-22
    • Janne VainioHannu MikkolaPasi OjalaJari Mäkinen
    • Janne VainioHannu MikkolaPasi OjalaJari Mäkinen
    • G10L19/12G10L21/00
    • G10L19/20
    • An encoder comprising an input for inputting frames of an audio signal in a frequency band, at least a first excitation block for performing a first excitation for a speech like audio signal, and a second excitation block for performing a second excitation for a non-speech like audio signal. The encoder further comprises a filter for dividing the frequency band into a plurality of sub bands each having a narrower bandwidth than the frequency band. The encoder also comprises an excitation selection block for selecting one excitation block among the at least first excitation block and the second excitation block for performing the excitation for a frame of the audio signal on the basis of the properties of the audio signal at least at one of the sub bands. The invention also relates to a device, a system, a method and a storage medium for a computer program.
    • 一种编码器,包括用于输入频带中的音频信号的帧的输入,用于对诸如音频信号的语音执行第一激励的至少第一激励块,以及用于对非语音进行第二激励的第二激励块 像音频信号。 编码器还包括滤波器,用于将频带划分成多个子频带,每个子带具有比频带窄的带宽。 编码器还包括激励选择块,用于在至少第一激励块和第二激励块之间选择一个激励块,用于根据至少一个音频信号的属性对音频信号的帧执行激励 的子带。 本发明还涉及一种用于计算机程序的装置,系统,方法和存储介质。