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    • 2. 发明授权
    • Signal processing method, processing apparatus and voice decoder
    • 信号处理方法,处理装置和语音解码器
    • US07835912B2
    • 2010-11-16
    • US12539158
    • 2009-08-11
    • Wuzhou ZhanDongqi WangYongfeng TuJing WangQing ZhangLei MiaoJianfeng XuChen HuYi YangZhengzhong DuFengyan Qi
    • Wuzhou ZhanDongqi WangYongfeng TuJing WangQing ZhangLei MiaoJianfeng XuChen HuYi YangZhengzhong DuFengyan Qi
    • G10L13/00G10L19/00
    • G10L19/005
    • The present invention discloses a signal processing method adapted to process a synthesized signal in packet loss concealment. The method includes the following steps: receiving a good frame following a lost frame, obtaining an energy ratio of energy of a signal in the signal of the good frame signal to energy of a synthesized signal corresponding to the same time of the good frame; and adjusting the synthesized signal in accordance with the energy ratio. The present invention also discloses a signal processing apparatus and a voice decoder. Through using the method provided by the present invention, the synthesized signal is adjusted in accordance with the energy ratio of the energy of the first good frame following the lost frame to the energy of the synthesized signal to ensure that there be not a waveform sudden change or an energy sudden change at the place where the lost frame and the first good frame following the lost frame are jointed in the synthesized signal, to realize the waveform's smooth transition and to avoid music noises.
    • 本发明公开了一种适用于处理分组丢失隐藏中的合成信号的信号处理方法。 该方法包括以下步骤:接收丢失帧之后的良好帧,获得良好帧信号的信号中的信号的能量与对应于良好帧的相同时间的合成信号的能量的能量比; 并根据能量比调整合成信号。 本发明还公开了一种信号处理装置和语音解码器。 通过使用本发明提供的方法,根据丢失帧之后的第一好帧的能量​​与合成信号的能量的能量比来调整合成信号,以确保没有波形突然变化 或者丢失帧和丢失帧之后的第一好帧相连接在合成信号中的位置处的能量突然变化,以实现波形的平滑过渡并避免音乐噪声。