Voice Boost: Better Audio for Every Podcast
Voice Boost is earsay's real-time audio enhancement system. It normalizes volume levels, enhances voice clarity, and reduces background noise—making every podcast sound like it was professionally mastered, regardless of original production quality.
How It Works
When you play a podcast with Voice Boost enabled, earsay analyzes the audio in real-time using Apple's Accelerate framework. It identifies voice frequencies and applies targeted enhancement: boosting clarity in the speech range, compressing dynamic range so quiet and loud sections match, and filtering out rumble and background noise. All processing happens on your device.
Benefits
- Consistent volume across all podcasts—no more adjusting
- Quiet podcasters become as clear as loud ones
- Background noise and room echo are reduced
- Jarring ad volume spikes are smoothed out
- Works equally well on streamed and downloaded episodes
- Real-time processing with no pre-processing delays
Try Voice Boost
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Free download. No subscription required.
Frequently Asked Questions
Will Voice Boost make music sound weird?
Voice Boost is optimized for speech frequencies. Music segments in podcasts pass through with lighter processing to preserve their original sound. It's not designed for music-only content.
Does Voice Boost work offline?
Yes! All audio processing happens on your device. Voice Boost works identically whether you're streaming or playing downloaded episodes, online or offline.
Can I adjust how much enhancement is applied?
Yes. earsay offers three enhancement levels: Subtle (light normalization), Normal (balanced enhancement), and Strong (maximum clarity boost for low-quality recordings).
Why do some podcasts sound worse than others?
Production quality varies wildly. Some podcasters use professional studios while others record in echoey rooms with cheap microphones. Voice Boost can't perform miracles, but it significantly improves clarity for most poorly-produced shows.
Does this use more battery?
Voice Boost uses Apple's hardware-accelerated audio processing for efficient on-device enhancement.