Free Online Tool
Text to Speech Silence Trimmer
Remove dead air from any text-to-speech audio file. Instant, browser-based, and completely free.
Text-to-Speech Audio Is Full of Dead Air
Text-to-speech engines produce audio with unnatural silence gaps. Whether you're using Google TTS, Amazon Polly, Microsoft Azure, or any cloud-based engine, the exported audio contains mechanical pauses between sentences and paragraphs. These gaps are processing artifacts that make otherwise high-quality synthetic speech sound robotic.
Why does text-to-speech audio have awkward pauses?
Cloud TTS systems split input text into processing segments. Each segment is synthesized independently, and the reassembly process introduces timing gaps. Unlike human speech — where breath pauses are 200-400ms — TTS gaps are typically 1.5-3 seconds of complete digital silence. SilentCut's silence detection algorithm distinguishes between these artificial gaps and natural speech pauses by analyzing the dB level and duration of each silent segment.
How It Works
Generate your TTS audio
Create your audio using any text-to-speech engine and export to MP3, WAV, or M4A.
Open SilentCut Studio
Drop your TTS audio file into SilentCut. No account, no installation, no upload — runs in your browser.
Apply AI Voiceover preset
One click to optimize settings for TTS audio. Fine-tune the threshold and duration if needed.
Download trimmed audio
Preview the result, then export to your preferred format with custom bitrate settings.
Optimized Preset
"TTS Optimized" Detection Settings
One-click preset calibrated for this exact use case.
Frequently Asked Questions
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Ready to fix your audio?
Drop your file and get clean audio in under 60 seconds.
Trim Your TTS Audio Now