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    • 3. 发明授权
    • System and method for improving audio during post-production of video recordings
    • 视频录像制作过程中改善音频的系统和方法
    • US07177526B2
    • 2007-02-13
    • US10184707
    • 2002-06-28
    • Michael A Goldsmith
    • Michael A Goldsmith
    • H04N7/52
    • G11B27/34G11B27/034
    • A system and method for improving audio quality, by means of signal processing on a computer, during post-production of recordings is disclosed. A recording of a “chirp” tone at the beginning of a scene is followed by analysis of the recorded chirp on the computer. For the acoustic signature of the recorded chirp, the computer can characterize the acoustic environment in which the recording was made and use those characteristics to improve the remainder of the audio. The processing that can be achieved by the computer includes, but is not limited to, frequency response correction and acoustic echo cancellation. A physical device for generating the chirp may be pre-built into a video recorder or may be an add-on device placed in physical proximity to the video recorder while the chirp is generated.
    • 公开了一种通过在计算机上的信号处理来提高音频质量的系统和方法。 在场景开始时记录“啁啾”音,然后分析计算机上记录的啁啾声。 对于记录的啁啾的声学签名,计算机可以表征在其中进行记录的声学环境,并且使用这些特征来改善音频的剩余部分。 计算机可以实现的处理包括但不限于频率响应校正和声学回声消除。 用于生成啁啾的物理设备可以预先构建到录像机中,或者可以是在生成啁啾时放置在物理上靠近录像机的附加设备。