Was wondering if anyone had any ideas,

Basically driving down the road this morning listening to the radio when it decides to cut off (stereo is still lit) although it sounded like the car was about to explode! Really bad bleeping noise, which when i turned the radio off, the sound got lower but could still hear the beeping. Even when I turned the ignition off the bleeping still carrys on until the car fully shuts down.

Could this be the battery on its way out? or the Stereo/Speakers gone.