You must have come across a situation when you want to take pictures of your kids and when you try to take a snap, the camera shutter sound disturbed them and you missed the opportunity to capture more. This may also happen while taking pictures of pets when you don't want the camera shutter sound.
You can also control individual system event sounds on your Android device with the "Ultimate Sound Control" application. You can disable sound for system events like battery low, video record, unlock, lock and many other events.
You need Root privilege to do this. If you have not rooted your device, you please read "Safely Root Micromax A89 To Delete Unwanted Applications And Increase Internal Memory". The easy way to root your device.
The "Ultimate Sound Control" allows you to disable other system even sounds like video record, battery low warning, unlock and lock, dock, ring notification volume, alarm volume, media player volume and more. This application is free works with Android 2.3 and later versions.