Sound Ideas, CARTOON, WHISTLE - SIREN WHISTLE

This sound effect can be found on Series 4000 Hollywood Sound Effects Library, which was made by Sound Ideas. It is a low pitched version of Sound Ideas, COMEDY, ACCENT - WHOOP WHISTLE: SHORT from The General Series 6000 Sound Effects Library. It shouldn't be confused with H-B ZIP, CARTOON - LOW WHISTLE ZIP OUT due to sounding similar. An identical sound effect, Hollywoodedge, Cartoon Streaks 6 SS016506 can be found on The Super Single Volume 1, which is likely an edited version of this sound effect.