| 摘要 |
PURPOSE: To provide a signal processing unit formed by a small number of components while keeping surround effect. CONSTITUTION: Left and right voice signals SL1 , SR1 received from input terminals 1,2 fed to a subtractor circuit 9 and an adder circuit 10. On the other hand, the voice signals SL1 , SR1 are subtracted in a subtractor circuit 5 and converted into a numeral by an ADC and the pitch is shifted by a tone scale conversion circuit 21 and the result is fed to the subtractor circuit 9 and the adder circuit 10 via a DAC 8. A surround effect is provided by the subtractor circuit 9 and the adder circuit 10 and its output is outputted to the outside of the unit from output terminals 11, 12. |
