HK637-2 Train Sound Effects Generator IC

HK637-2  Train Sounds Generator IC
Price: $2.99
Datasheet: 

HK637-2 Train Sound Effects Generator IC.

This IC can produce 4 different Train sounds:

1. Train whistle + Train driving, Warning Bell and Train passing a bridge.

2. Train whistle.

3. Train warning bell.

4. Train passing a bridge.

It also has provision for LED indications.

The App Note shows how to set it up and how to modify the sounds. The IC comes in a DIP-16 package.