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    • 35. 发明授权
    • Loop tape recorder
    • 环形录音机
    • US4339980A
    • 1982-07-20
    • US182773
    • 1980-08-29
    • Helen HookeDavid Lerner
    • Helen HookeDavid Lerner
    • G10H1/00G10H1/40G10H3/03
    • G10H1/40G10H1/0033Y10S84/12
    • A series of beat signals (e.g. sixteen) corresponding to a desired rhythm or tempo are recorded on one track of a multi-track magnetic tape, which is then cut and spliced into a loop just long enough to contain the entire series of recorded beats. During a performance the loop is used in a recorder designed to cause the recorded beat signals repeatedly to be played back by a first head at a first terminal, which can be connected through an amplifier to an ear-piece and/or lamp so that the reproduced beat signals can be heard and/or seen only by the performer. A second, combination record-playback-erase head in the recorder is mounted adjacent a second track on the tape and is connected by, for example, a foot-operated switch to a circuit which enables the second head instantaneously to be switched from a record to a playback mode, and vice versa. The performer can then use the foot-operated switch momentarily to switch the second head into its recording mode to record on the second track, during one complete revolution of the tape, background music or rhythm compatible to the beat signals. The last-recorded material can then be amplified and instantly played back through a second terminal to a live audience repeatedly as the performer continues the performance. The beat signals appearing at the first-named terminal can also be utilized to energize a synthesizer or a light show.
    • 对应于期望的节奏或速度的一系列节拍信号(例如,十六)被记录在多磁道磁带的一个磁道上,然后将其剪切并拼接成刚刚足够长的循环,以容纳整个记录的节拍序列。 在执行期间,该循环用于记录器中,该记录器被设计成使得记录的节拍信号在第一终端处被重复地由第一头重放,该第一终端可以通过放大器连接到耳机和/或灯, 再现的节拍信号可以被演奏者听到和/或看到。 记录器中的第二个组合记录重放擦除磁头安装在磁带上的第二磁道附近,并且通过例如脚踏操作的开关连接到电路,该电路使第二磁头能够从记录切换 到播放模式,反之亦然。 然后,表演者可以立即使用脚踏开关将第二个磁头切换到记录模式,以便在磁带的一个完整的旋转期间,与拍子信号兼容的背景音乐或节奏进行记录。 然后,随着演员继续演出,最后录制的材料可以被放大,并通过第二个终端立即回放到现场观众。 出现在第一名终端的节拍信号也可以用于激励合成器或灯光显示。