1. removing a covering or wrapping from something, especially to make it visible or audible
Usage: present participle of ‘unmuffle’
2. making a sound clearer or louder by removing something that dampens it
Usage: present participle of ‘unmuffle’

Examples

• She was unmuffling the microphone before the speech.
• The mechanic was unmuffling the car’s exhaust system.
• He spent the morning unmuffling his drums for the concert.
• The workers were unmuffling the construction equipment.
• They were unmuffling the speakers to test the sound quality.
• The technician was unmuffling the audio recording.