Whisper Audio Subtitle & Visual Waveform Workbench

Offline Web Audio & Whisper Engine
Visual Waveform & Region Editor
00:00.000 / 00:00.000
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Interactive Timecoded Subtitle Editor
# Start Time End Time Japanese Subtitle Text Action
Space Play/Pause / Frame Scrub (100ms) Shift + Drag Region Selection
Web Audio Parametric Noise Filter
Whisper Model Telemetry Benchmark

Local speech-to-text accuracy matrix (Japanese dataset evaluation):

Model VRAM Speed WER (Error Rate)
whisper-tiny ~1 GB 32x real-time 18.4%
whisper-base ~1 GB 16x real-time 12.1%
whisper-small.pt ★ ~2 GB 6x real-time 6.3%
whisper-medium ~5 GB 2x real-time 4.2%
whisper-large-v3 ~10 GB 1x real-time 2.8%
Active Preset Model: small.pt
Trimmed Range: 0.500s - 11.500s
Total Subtitle Lines: 3 Lines
DSP Filter Status: Active (120Hz - 6000Hz)
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