Hollywoodedge, Train Whistle 3 Vario AC011601

This sound effect can be found on Animation Collection, which was made by The Hollywood Edge. It's commonly referred to as "Mighty Mac's whistle". The whistle that is heard in this sound effect is most likely from a toy train whistle. It should not be confused with Sound Ideas, CARTOON, WHISTLE - TRAIN WHISTLE, HIGH.

Sound Effect Description

Train Whistle - 3 Effects; Various Blows.

The Cat in the Hat Knows a Lot About That! (Heard once in "I See Seeds".)
El Tigre: The Adventures of Manny Rivera (Heard once in "Miracle City Worker".)
The Fairly OddParents (Heard during the intro.)
GeoTrax (Animated Series) (Used in various pitches variants as Woohoo's whistle in "Steamer and Samuel Save the Day".)
Hey Duggee
Peppa Pig (Used as Gertrude's whistle.)
Robot Chicken (Heard once in "Ext - Forest Day".)
Seven Little Monsters (Heard in "And Baby Makes Eight" in normal and high pitches)
Thomas & Friends (Used as Mighty's whistle in a normal pitch, Mac's whistle in a high pitch in Series 11-12, and Harvey's whistle in a lower pitch in Series 12-24.)
Thomas & Friends: All Engines Go