| 摘要 |
PURPOSE:To obtain a spatiality creating circuit in which a sound image is moved automatically with a prescribed period by providing a voltage controlled amplifier and a phase inverting device controlled by an output of a low frequency oscillator to one channel formed by branching an input signal. CONSTITUTION:An output signal of the voltage controlled amplifier 8 is changed by an output signal (e.g., sinusoidal wave signal) of the low frequency oscillator 10, branched by a branching means 7 and becomes larger than a signal S outputted directly to an output terminal 5b. On the other hand, the phase of an output signal of the amplifier 8 is inverted and outputted to an output terminal 5a as a signal Sd. Thus, the localization range of the sound image constituted by two speakers is moved automatically up to a range other than that between the two speakers and the sound field spatiality is obtained with less feeling of disorder as the sound field. |
