| Popis: |
An input musical tone signal is amplified by a first VCA and then supplied to second and third VCAs. The second and third VCAs are controlled by sine-wave signals which have a 180°-phase difference. Musical tone signals, which have been so controlled that a pan-pot may move right and left, are supplied to right and left loudspeakers. The first VCA is controlled by a sine-wave signal whose phase is different by 90° from the phases of the signals supplied to the second and third VCAs. The volume of a composite musical tone made up of the tones generated by the loudspeakers is thereby controlled, thus also moving the pan-pot to the front and rearward. |
