Acoustic communication device and method for filtering an audio signal to attenuate a high frequency section of the audio signal and generating a residual signal and psychoacoustic spectrum mask
    2.
    发明授权
    Acoustic communication device and method for filtering an audio signal to attenuate a high frequency section of the audio signal and generating a residual signal and psychoacoustic spectrum mask 有权
    用于对音频信号进行滤波以衰减音频信号的高频部分并产生残余信号和心理声谱掩模的声学通信装置和方法

    公开(公告)号:US09251807B2

    公开(公告)日:2016-02-02

    申请号:US14011466

    申请日:2013-08-27

    IPC分类号: G10L21/0232 G10L19/02

    摘要: An acoustic communication method and device are provided that filter an audio signal to attenuate a high frequency section of the audio signal; generate a residual signal which corresponds to a difference between the audio signal and the filtered signal; generate a psychoacoustic mask for the audio signal based on a predetermined psychoacoustic model; generate a psychoacoustic spectrum mask by combining the residual signal with the psychoacoustic mask; generate an acoustic communication signal by modulating digital data according to the acoustic signal spectrum mask; and combine the acoustic communication signal with the filtered signal.

    摘要翻译: 提供一种声音通信方法和装置,其对音频信号进行滤波以衰减音频信号的高频部分; 产生对应于音频信号和滤波信号之间的差的残差信号; 基于预定的心理声学模型生成用于音频信号的心理声学掩模; 通过将残留信号与心理声学掩模组合来产生心理声谱谱掩模; 通过根据声信号频谱掩模调制数字数据产生声通信信号; 并将声通信信号与滤波后的信号进行组合。

    DEVICE AND METHOD FOR ACOUSTIC COMMUNICATION
    4.
    发明申请
    DEVICE AND METHOD FOR ACOUSTIC COMMUNICATION 有权
    用于呼声通信的装置和方法

    公开(公告)号:US20130346070A1

    公开(公告)日:2013-12-26

    申请号:US14011466

    申请日:2013-08-27

    IPC分类号: G10L21/0232

    摘要: Disclosed is an acoustic communication method that includes filtering an audio signal to attenuate a high frequency section of the audio signal; generating a residual signal which corresponds to a difference between the audio signal and the filtered signal; generating a psychoacoustic mask for the audio signal based on a predetermined psychoacoustic model; generating a psychoacoustic spectrum mask by combining the residual signal with the psychoacoustic mask; generating an acoustic communication signal by modulating digital data according to the acoustic signal spectrum mask; and combining the acoustic communication signal with the filtered signal.

    摘要翻译: 公开了一种声学通信方法,其包括对音频信号进行滤波以衰减音频信号的高频部分; 产生对应于音频信号和滤波信号之间的差的残差信号; 基于预定的心理声学模型产生用于音频信号的心理声学掩模; 通过将残留信号与心理声学掩模组合来产生心理声谱谱掩模; 通过根据声信号频谱掩模调制数字数据产生声通信信号; 以及将声通信信号与滤波信号组合。