Strange cracking distorted sound just started when playing any type of sound

when playing sound of any kind (music, garageband,youtube etc) it sounds very distorted like a broken speaker. it also plays distorted through the headphones. and it is set on low but seems to be sounding quite loud.
i am not sure but it may have started after i downloaded an app hangman rss pro which i like to play. i was playing the free version and decided to upgrade. anyway, i dont see how that could affect the sound throughout the ipad but just thought i would throw it out there.

are there any settings i might try to fix this? its almost like its on "overdrive" or something

Thanks
k

I shut the ipad off. then turned it on..... didn't change anything ......everything is working again. lucky I guess .......we'll have to wait and see......