A rising sawtooth sweep with a fast vibrato, ending on a bright sparkle of noise. Use it when a player picks up a power-up, charges a shot, unlocks a skill, or finishes a timer.
sawtooth 180 Hz -> 900 Hz over 360 ms, exponential pitch vibrato 26 Hz, depth 6% for the first half only second sawtooth one octave up at 35% level, same sweep, same envelope sparkle: noise 90 ms, high-pass 5 kHz, starting at 330 ms, fading out low-pass 6.5 kHz at the end to tame the saw envelope: 4 ms attack, held flat to 360 ms, 120 ms linear release