Examples:

• Sorry, i can't hear you.
• Hold on, i can't hear you.
• Nipul, i can't hear you!
• Speak up, please, i can't hear you.
• I can't hear you when you're covered in rocks.
• I can't hear you from all the way under this bus.
• I can't hear you, I have a buzzing in my ears.
• I can't hear you; I think my engine's too loud.