my left ear drum is fully destroyed 4 years ago. Due to which now I am seeing the changes in my life style. Actually when I speak I do not listen my voice clearly and I have to put force and pressure and speak up for any content ,which decrease my energy for long speeches. I think my voice does not vibrate through eardrum, which ensure us that whatever we are speaking is right. And I also saw symptoms of changing and deep voice but the voice I listen when I speak is totally different. My parents also observed this.