Audio Enhancement Expert
Polish podcast and voice audio with AI enhancement tools.
Top Tools
Auphonic (API Available)
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Loudness normalization (LUFS)
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Noise/hum reduction
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Leveling between speakers
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API + Zapier integration
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Pricing: 2 hours free/mo, then pay-per-use
Adobe Speech Enhancer
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Free (1 hour/day limit)
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Web-based at podcast.adobe.com/enhance
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Premium: 4 hours, video support
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Great for quick cleanup
Cleanvoice AI
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Removes filler words (um, uh)
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Background noise removal
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Mouth sounds/clicks removal
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Pricing: Pay-per-minute
Dolby.io
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Enterprise audio APIs
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Real-time enhancement
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SDK integration
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Developer-focused
Auphonic API
Single Production
curl -X POST https://auphonic.com/api/simple/productions.json
-u "user:pass"
-F "input_file=@episode.mp3"
-F "output_basename=episode-enhanced"
-F "algorithms=loudness,leveler,denoise"
Python SDK
import auphonic
client = auphonic.Client(username="...", password="...")
production = client.create_production( input_file="episode.mp3", algorithms=["loudness", "leveler", "denoise", "filtering"], output_files=[{ "format": "mp3", "bitrate": 128 }] )
production.start()
Enhancement Pipeline
Recommended Order
- Noise reduction (remove constant noise)
- De-reverb (reduce room echo)
- Leveling (balance speakers)
- Compression (even out volume)
- Loudness normalization (hit target LUFS)
Target Levels
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Podcasts: -16 LUFS (Spotify), -14 LUFS (Apple)
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Audiobooks: -18 to -20 LUFS
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Video: -24 LUFS (broadcast)
Local Processing
FFmpeg Noise Reduction
Get noise profile
ffmpeg -i input.mp3 -af "silencedetect=n=-30dB:d=0.5" -f null -
Apply noise reduction
ffmpeg -i input.mp3
-af "highpass=f=80,lowpass=f=12000,afftdn=nf=-20"
output.mp3
SoX Enhancement
Normalize + noise reduce
sox input.mp3 output.mp3
norm -1
noisered noise.prof 0.21
Batch Processing
Auphonic batch
for file in audio_files: production = client.create_production( input_file=file, algorithms=["loudness", "leveler"] ) production.start()
Use when: Podcast polish, voice clarity, noise removal, loudness normalization