| 摘要 |
Reverberation imparting functions as are obtained by a mechanical type reverberation apparatus employing coil spring delaying elements are simulated by an electric circuit configuration. Three delay loop circuits are individually provided, each including a first and a second delay circuit and delaying and circulating an input signal to thereby simulate the propagation of vibrations through each individual coil spring. Multiplier circuits are provided to individually supplying the out puts from the first and the second delay circuit in one delay loop circuit to the input sides of the second and the first delay circuit in two other delay loop circuits after controlling the signal characteristic to thereby simulate the propagation of vibrations through the supporting plates for the coil springs. A combined signal supplying circuit is provided to combine the respective outputs from the first and the second delay circuits and supplying the combined signal to the respective delay loop circuits again after controlling the signal characteristic, thereby simulating the propagation characteristics between the springs and the outer box. The final output signal is fed back via a multiplier circuit and the combined signal supplying circuit to the respective delay loop circuits to thereby simulate the acoustic feed back to the coil springs.
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