Browser Audio Studio

Trim, fit, loop, and polish AI BGM in your browser.

A lightweight browser audio studio for creators using AI-generated BGM, short-form clips, voiceovers, loops, and everyday audio checks. Start with local workflows before moving into heavier editing tools.

Fit AI BGM length Check audio duration

Audio Duration Checker

Check file length, size, type, and creator-friendly timing notes.

DurationBrowser local
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Audio Trimmer with Fade

Trim a local audio clip, add simple fade in/out, and export a WAV preview file.

Trim + FadeBrowser local
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Volume Adjuster

Preview and export simple volume changes as WAV with clipping warnings.

VolumeBrowser local
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Playback Speed Preview

Preview audio at 0.5x to 2.0x speed for scripts, lessons, and creator checks.

SpeedBrowser local
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BPM Tap Counter

Tap along with a track to estimate BPM without uploading any file.

BPMBrowser local
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Metronome

Run a simple browser metronome with BPM, beat count, and volume controls.

MetronomeBrowser local
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BGM Length Fitter

Turn AI-generated BGM into 15s, 30s, 60s, or custom video-ready cuts with fade-out.

AI BGMShorts
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Seamless Loop Maker

Create smoother loop-ready versions of AI BGM for games, web backgrounds, or reels.

LoopCrossfade
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Voiceover + BGM Mixer

Place AI BGM under narration with simple ducking so the voice stays readable.

VoiceoverDucking
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AI BGM Pack Builder

Build a creator pack from one BGM: short cuts, loop, fade-out, and voiceover bed.

PackCreator workflow
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BGM Volume Normalizer

Apply simple peak-based video background levels to AI-generated music.

NormalizeVideo BGM
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AI BGM Prompt Helper

Draft safer background music prompts by mood, use case, length, and instruments.

PromptSuno-style
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Creator Audio Workflow Bridge

Estimate voiceover length, BGM target length, cue density, and caption handoff notes before opening Caption Tools Lab v4.

Audio → CaptionsShorts workflow
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Creator route

Audio is the first half of a good caption workflow.

1. Estimate voiceoverPaste a script, estimate duration, and prepare caption timing notes. 2. Fit BGM lengthCreate 15s, 30s, 60s, or custom cuts for shorts and reels. 3. Build captionsSend the timing idea to Caption Lab for safe-zone checks and export.

Phase 1 + Phase 2 scope

Audio Tools Lab now includes core audio utilities plus an AI BGM post-production toolkit for creators: length fitting, loop making, voiceover mixing, simple normalization, pack building, and prompt planning. MP3 export, AI cleanup, vocal removal, and full DAW-style editing remain intentionally saved for later phases.

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