Facing sound recording problem with my Asus K42F Laptop(windows 7)?

Facing sound recording problem with my Asus K42F Laptop(windows 7)?

After recording my voice by the voice recorder in pc it’s totally impossible to hear that record coz the recorded sound is unintelligible.the recording sounds like bird tweeting. I’ve checked the microphone windows but found nothing to solve it.the device 2-realtek high definition audio is enable…any solution plz?