SYSTEM AND METHOD FOR ALTERING PLAYBACK SPEED OF RECORDED CONTENT
    7.
    发明申请
    SYSTEM AND METHOD FOR ALTERING PLAYBACK SPEED OF RECORDED CONTENT 审中-公开
    用于改变记录内容的回放速度的系统和方法

    公开(公告)号:WO2007112176A3

    公开(公告)日:2008-12-24

    申请号:PCT/US2007063291

    申请日:2007-03-05

    Abstract: A method, apparatus (100) and system (200) for altering the playback speed of recorded content (105) to match a target syllable rate is provided. A user may enter a desired, target playback syllable rate through a user interface (101), such as a keypad or touch screen. Alternatively, the target playback syllable rate may be determined from identification of the source of the recorded content (105). An actual playback syllable rate (106) associated with the recorded content (105) is then determined. The recorded content (105) is then altered, by time domain harmonic scaling in one embodiment, such that the altered playback speed (109) substantially matches the target playback syllable rate. In so doing, a listener is able to receive recorded content (105) at a faster or slower rate than it is produced. Elements that may compromise the intelligibility of the recorded content (105), including distortion (114), background noise (113), ambient noise (117) and audible intonations (115), may be measured such that the target playback syllable rate may be compensated.

    Abstract translation: 提供了一种用于改变记录内容(105)的重放速度以匹配目标音节速率的方法,装置(100)和系统(200)。 用户可以通过诸如键盘或触摸屏的用户界面(101)输入期望的目标回放音节率。 或者,可以从记录内容的源的识别(105)确定目标回放音节率。 然后确定与记录内容(105)相关联的实际回放音节率(106)。 然后,通过在一个实施例中的时域谐波缩放来改变所记录的内容(105),使得改变的播放速度(109)基本上与目标播放音节速率相匹配。 在这样做时,听众能够以比产生的更快或更慢的速度接收记录的内容(105)。 可以测量可能损害记录内容(105)的可懂度的元件,包括失真(114),背景噪声(113),环境噪声(117)和可听音调(115),使得目标回放音节率可以是 补偿。

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