Transcription quality depends heavily on audio quality. A few simple recording improvements can dramatically boost accuracy.
The 80/20 of Audio Quality
You don't need expensive equipment. Focus on: distance to microphone, background noise, and room echo. These three factors matter more than mic quality.
Microphone Distance
- Too far: Room noise dominates, speech unclear
- Too close: Plosives (p, b sounds) cause distortion
- Ideal: 6-12 inches from mouth
Reducing Background Noise
- Turn off fans and AC if possible
- Close windows to block traffic noise
- Move away from computer fans
- Put phone on silent (no vibrations)
- Record during quiet hours
Room Acoustics
Hard surfaces create echo that confuses transcription. Soft furnishings absorb sound. A closet full of clothes is often the best recording booth in a home.
Recording Settings
- Sample rate: 16kHz minimum, 44.1kHz is fine
- Format: WAV or high-quality MP3
- Channels: Mono is sufficient
- Levels: Peak around -6dB to -3dB
Quick Fixes
- Use earbuds with inline mic (surprisingly good)
- Cup hand behind mic to block room noise
- Record under a blanket for isolation (really works)
- Face away from noise sources
Transcribe Any Audio
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