Abstract: A delayed vibrato signal generating arrangement comprises an envelope signal generator having a capacitor, a switching device for discharging the capacitor at the instant of key depression, and two charging circuits providing different charging time constants for charging the capacitor to produce an envelope signal; a semiconductor unidirectional device coupled to the envelope signal generator; and a vibrato signal generator coupled to the unidirectional device. The capacitor is relatively rapidly charged to a predetermined potential level by both the two charging circuits and then gradually charged by only one of the charging circuits. The signal portion of the envelope signal substantially below the predetermined potential level is clipped off by the unidirectional device to provide a time delay for delayed vibrator. The time delay is virtually determined by the time constant for charging the capacitor to the predetermined potential level.