Finish podcast audio, finalize WAV precision or repair a recording.
Prepare a complete audiobook or podcast, write controlled 8, 16 or 24-bit PCM with dither, preserve audio while editing Broadcast Wave chunks, synchronize two recorders or repair signal damage. Forty-one local edit and conversion tools keep selected audio on this device.
Quick answer: Use Audiobook Production & ACX QC Studio for whole-book chapter preflight and delivery packaging; Bit Depth Converter for controlled WAV precision and dither; BWF Metadata Editor for bext, iXML and LIST/INFO data; and Audio Sync Drift Corrector when separate recorders gradually move apart.
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41 tools, grouped by job.
Control the samples, the metadata and the final container
Choose the delivered bit depth and dither, write auditable Broadcast Wave metadata, then confirm the resulting WAV before handoff.
All Edit & Convert tools
Split, loop, mix, author, pack & publish
Recover tracks from CUE indexes, search loop seams, prepare complete audiobooks, review podcast clip candidates, export frequency layers, build transitions and package reusable assets.
Audiobook Production & ACX QC Studio
A local whole-book preflight and preparation workspace that orders audiobook chapters, measures delivery constraints, explains chapter-to-chapter consistency and builds an open delivery package without uploading narration.
Open Audiobook Production & ACX QC Studio β CLIPSPodcast Clip Maker
A local podcast clipping workspace that ranks reviewable windows with transparent signal evidence, then lets an editor refine exact boundaries before exporting one clip or a reviewed batch.
Open Podcast Clip Maker β CUECUE Sheet Splitter
A frame-aware album-image cutter that reads CUE metadata and turns one continuous recording into individually named track WAV files.
Open CUE Sheet Splitter β β»Automatic Loop Point Finder
An automatic seam-search workspace that scores many nearby start and end pairs, ranks the least discontinuous loop candidates and lets the user audition and fine-tune them.
Open Automatic Loop Point Finder β β₯Multiband Stem Splitter
A frequency-layer export desk that turns one recording into complementary low, mid and high audio stems rather than guessing vocals, drums or instruments.
Open Multiband Stem Splitter β βDJ Transition Maker
A two-deck editor that creates a bar-length transition between Track A and Track B with explicit BPM, beat offset, crossfade curve and low-frequency handoff controls.
Open DJ Transition Maker β β€Cue Sheet Maker
An album-authoring workspace that combines ordered tracks and pregaps into one continuous audio image while writing matching CUE, M3U8 and JSON metadata.
Open Cue Sheet Maker β β°Audio Sprite Builder
A delivery tool that packs several short clips into one audio file and produces exact start and duration lookup data for triggering each clip by name in an app, game or website.
Open Audio Sprite Builder β β¦Sample Pack Builder
A batch delivery workspace that prepares several separate source samples with consistent silence trim, peak level, edge fades and collision-safe names.
Open Sample Pack Builder β β±Transient Slicer
An onset-based sample chopper that detects percussive attacks, turns them into editable slice boundaries and exports the resulting ordered clips without changing their timing inside each slice.
Open Transient Slicer β βοΈAudio Trimmer
A waveform editor for keeping or removing a selected time range, with optional fades at the cut edges.
Open Audio Trimmer β π§©Audio Splitter & MP3 Chunker Online
A local multi-output audio splitter for turning one decoded file into named parts by manual markers, equal count, fixed duration or detected silence.
Open Audio Splitter & MP3 Chunker Online β πAudio Joiner
A local audio joiner that places uploaded clips in order and can overlap neighboring files for a crossfade.
Open Audio Joiner β πAudio Loop Maker
A local audio looper that repeats a selected region and can reduce the end-to-start transition with bounded zero-crossing snap and crossfade controls.
Open Audio Loop Maker β γ°οΈAudio Fade In & Fade Out
A local full-duration volume-envelope editor for drawing fade-ins, fade-outs and multi-point gain changes without trimming or changing the file length.
Open Audio Fade In & Fade Out β πAudio Censor & Bleep Tool
A local waveform editor that applies a bleep tone, silence or reversed audio to one or more marked time ranges without changing the full-file duration.
Open Audio Censor & Bleep Tool β πPodcast Chapter Maker
A chapter-marker editor for one unchanged episode, with timestamp validation and exports for video descriptions, media metadata and cue sheets.
Open Podcast Chapter Maker β π·οΈAudio Watermark & Voice Tag
A local branding mixer that overlays a short voice tag or sound logo at the start, end, repeated intervals or manually chosen times.
Open Audio Watermark & Voice Tag βConvert, document & deliver
Choose format and bit depth, write MP3 or Broadcast Wave metadata, set the channel layout and prepare the final handoff.
Bit Depth Converter & Dither
A WAV finalization desk that writes selected integer or floating-point sample formats and can add deterministic dither before reducing precision.
Open Bit Depth Converter & Dither β BWFBWF Metadata Editor
A local RIFF/WAVE inspector and editor for Broadcast Wave bext, iXML and LIST/INFO metadata that preserves the source audio chunk during export.
Open BWF Metadata Editor β πAudio Converter
A local audio transcoder that decodes any browser-supported source and writes MP3 or WAV with selected rate and channel settings.
Open Audio Converter β π¬Video to Audio
A soundtrack converter that decodes audio from a browser-supported video file and re-encodes it as an audio download.
Open Video to Audio β ποΈAudio Compressor
A file-size reducer that lowers bitrate, sample rate or channel count and re-encodes the audio; it is not a dynamics-compressor effect.
Open Audio Compressor β βοΈStereo to Mono Converter
A local channel-layout converter for downmixing stereo, extracting or swapping left and right, or duplicating a mono source into dual mono without changing duration.
Open Stereo to Mono Converter β π·οΈMetadata Editor
An MP3 tag editor with a full single-file cover-art workflow and a separate 2-to-100-file batch workspace with explicit apply-mask controls.
Open Metadata Editor β πΌοΈFLAC Cover Art
A single-file and 2-to-50-file FLAC front-cover editor that preserves the encoded audio and unrelated metadata byte for byte.
Open FLAC Cover Art β πRingtone Maker
A guided waveform cutter for selecting up to about 40 seconds of a song and adding short fades.
Open Ringtone Maker β ποΈVoice Recorder
A simple microphone recorder that captures one take in the browser, then converts it to downloadable MP3 or WAV.
Open Voice Recorder βRepair, synchronize, level & transform
Correct recorder drift and bias, rebuild short dropouts, align stereo channels, finish spoken-word recordings, target loudness and reshape pitch or speed.
Audio Sync Drift Corrector
A two-recorder alignment desk that estimates initial offset plus linear clock drift from repeated correlation anchors and renders the secondary recording onto the reference timeline.
Open Audio Sync Drift Corrector β DCDC Offset Remover
A local repair workspace that measures each channel mean, recenters biased PCM or applies a gentle DC-blocking filter, and verifies the change before exact-length export.
Open DC Offset Remover β β±Audio Dropout Repair
A short-gap restoration editor that detects localized level collapses and rebuilds enabled events from a healthy stereo channel or nearby temporal context.
Open Audio Dropout Repair β βStereo Phase Aligner
A stereo repair tool that estimates one bounded left/right sample offset and polarity relationship, then renders a no-wrap alignment for before/after correlation and mono checks.
Open Stereo Phase Aligner β π©ΉFix Clipped Audio & Audio Declipper
A local audio declipper that finds flat-topped sample runs and reconstructs only short bounded regions when usable waveform context exists on both sides.
Open Fix Clipped Audio & Audio Declipper β π€«Silence Remover
An automatic dead-air editor that detects low-level sections and removes or shortens them according to a threshold.
Open Silence Remover β ποΈPodcast Audio Enhancer
A guided local spoken-word production chain that shortens long pauses, controls speech dynamics, estimates integrated loudness, moves the result toward a delivery target and exports the finished episode.
Open Podcast Audio Enhancer β ποΈAuto Audio Ducker
A local voiceover and background-music mixer that lowers music when its envelope detector finds active narration, then restores it with adjustable timing.
Open Auto Audio Ducker β πLoudness Normalizer
A loudness-matching tool that estimates integrated LUFS, applies gain toward a target and renders a new file.
Open Loudness Normalizer β πΉAudio Key Changer & Pitch Shifter
A local musical key changer and semitone pitch shifter that calculates a source-to-target key interval and transposes audio without ordinary playback-rate speed change.
Open Audio Key Changer & Pitch Shifter β β±οΈTempo Changer
A time-stretch tool that changes duration from roughly 50 to 200 percent speed while aiming to preserve musical pitch.
Open Tempo Changer β βͺReverse Audio
A literal reverse-audio tool that flips the decoded sample order so the entire file plays backward.
Open Reverse Audio β π΅432Hz Converter
A tuning-reference converter that applies the exact signed-cents ratio between an assumed source and a 430-to-446 Hz target while preserving decoded duration.
Open 432Hz Converter βChoose by outcome
Every card is one direct link. The full explanations remain visible to people, search engines and answer engines.
- I want toConvert WAV bit depth with controlled ditherBit Depth Converter writes PCM 8, 16 or 24-bit or float32, exposes seeded dither and quantization error, and preserves rate, channels and frame count.Open Bit Depth Converter & Dither
- I want toEdit Broadcast Wave metadataBWF Metadata Editor inspects RIFF chunks, validates bext and iXML fields and rebuilds metadata while preserving audio and unknown chunks.Open BWF Metadata Editor
- I want toSynchronize two drifting recordingsAudio Sync Drift Corrector matches repeated windows across a reference and secondary recording, estimates clock drift and renders the secondary onto the reference timeline.Open Audio Sync Drift Corrector
- I want toRemove DC offset from a waveformDC Offset Remover measures every channel and either subtracts its constant mean or applies a controlled very-low-frequency blocker before exact WAV export.Open DC Offset Remover
- I want toRepair short audio dropoutsAudio Dropout Repair detects local envelope collapses, distinguishes one-channel from full-signal losses and rebuilds enabled events from stereo or nearby temporal context.Open Audio Dropout Repair
- I want toSplit a continuous album from its CUE sheetCUE Sheet Splitter parses track metadata, INDEX 00, INDEX 01 and pregaps, then exports named WAV tracks with explicit boundary ownership.Open CUE Sheet Splitter
- I want toFind low-click loop boundaries automaticallyAutomatic Loop Point Finder searches near a target region, ranks seams by signal continuity and lets you fine-tune or crossfade the chosen candidate.Open Automatic Loop Point Finder
- I want toSplit low, mid and high frequency stemsMultiband Stem Splitter uses adjustable crossovers and complementary residual paths so three exact-length WAV layers reconstruct the decoded source.Open Multiband Stem Splitter
- I want toBuild a bar-synced DJ transitionDJ Transition Maker aligns two decks by BPM and bars, exposes beat offset, crossfade curve and bass handoff, then renders the complete local transition.Open DJ Transition Maker
- I want toAuthor an album cue sheetCue Sheet Maker combines ordered tracks and pregaps into one continuous WAV, then writes exact 75 fps INDEX positions plus M3U8 and project JSON.Open Cue Sheet Maker
- I want toPack clips into one audio spriteAudio Sprite Builder creates one packed WAV or MP3 and exact named cue maps for triggering its non-overlapping clips in an app, game or website.Open Audio Sprite Builder
- I want toPrepare a batch sample packSample Pack Builder trims silence, normalizes peaks, applies short fades and collision-safe names, then bundles separate WAV outputs locally.Open Sample Pack Builder
- I want toChapter one long episodePodcast Chapter Maker adds ordered, titled navigation points without cutting or re-encoding the source audio.Open Podcast Chapter Maker
- I want toFind and review podcast clip candidatesPodcast Clip Maker ranks bounded windows with transparent signal evidence, keeps the full source available for context and exports only editor-approved local clips.Open Podcast Clip Maker
- I want toFinish a spoken-word episodePodcast Audio Enhancer combines long-pause tightening, linked voice compression, gated loudness matching, honest comparison views and WAV/MP3/JSON delivery in one local workflow.Open Podcast Audio Enhancer
- I want toPrepare a complete audiobookAudiobook Production & ACX QC Studio organizes the whole book, measures each chapter and cross-chapter consistency, supports Before/Prepared/Difference review and exports an ordered MP3 package with open QC reports.Open Audiobook Production & ACX QC Studio
- I want toAdd a voice tag or sound logoAudio Watermark overlays a short branding clip at the start, end, intervals or custom times and can duck the main audio around it.Open Audio Watermark & Voice Tag
- I want toCut or combineTrimmer keeps or removes a selected range; Joiner concatenates multiple decoded files with optional crossfades.Open Audio Trimmer
- I want toSplit into many partsAudio Splitter creates named outputs by markers, equal count, duration or level-based silence and records exact boundaries in manifests.Open Audio Splitter & MP3 Chunker Online
- I want toSlice at percussive onsetsTransient Slicer detects attack-led boundaries, lets you edit and audition them, then exports named samples as WAV files or one ZIP.Open Transient Slicer
- I want toRepair short clipped peaksAudio Declipper reconstructs only bounded flat-topped runs with context on both sides and flags longer damage it cannot infer safely.Open Fix Clipped Audio & Audio Declipper
- I want toDraw fades and gain changesAudio Fade In & Fade Out preserves duration while editable automation points shape gain across the complete file.Open Audio Fade In & Fade Out
- I want toChange musical keyAudio Key Changer calculates a source-to-target semitone interval or accepts a manual shift while preserving decoded duration.Open Audio Key Changer & Pitch Shifter
- I want toChange format or sizeConverter writes MP3 or WAV; Audio Compressor trades bitrate, sample rate or channels for a smaller file.Open Audio Converter
- I want toChange channel layoutStereo to Mono Converter can downmix with stated math, extract or swap channels, and duplicate mono to dual mono.Open Stereo to Mono Converter
- I want toPrepare a targetUse Loudness Normalizer for LUFS-oriented gain or Ringtone Maker for a short phone-ready MP3/WAV excerpt.Open Loudness Normalizer
- I want toMix narration over musicAuto Audio Ducker follows the voice envelope and lowers a separate music file with adjustable attack, release and depth.Open Auto Audio Ducker
- I want toCensor marked regionsAudio Censor applies a bleep, mute or reverse treatment to manually selected ranges while keeping exact output duration.Open Audio Censor & Bleep Tool
- I want toTag several MP3 filesMetadata Editor applies only explicitly enabled bulk fields, preserves the MPEG payload and untouched ID3 frames, and bundles outputs with a manifest.Open Metadata Editor
- I want toRetune 440 Hz to 432 Hz432 Hz Converter calculates the signed cents ratio, keeps the decoded duration, supports synchronized A/B and records an exact tuning receipt.Open 432Hz Converter
- I want toApply one cover to a FLAC batchFLAC Cover Art updates the type-3 front cover across a bounded queue and bundles byte-preserving results with a manifest.Open FLAC Cover Art
- I want toRepair stereo timing and polarityStereo Phase Aligner estimates a bounded channel lag, recommends polarity correction and renders a no-wrap exact-duration alignment you can check in mono.Open Stereo Phase Aligner
Useful browser-audio workflows
- Video clip to shareable audio
- Video to Audio β Audio Trimmer β Audio Compressor
- Assemble a spoken episode
- Silence Remover β Audio Joiner β Loudness Normalizer
- Finish a podcast in one local pass
- Noise Remover β Podcast Audio Enhancer β Podcast Chapter Maker
- Turn one long episode into reviewed clips
- Podcast Audio Enhancer β Podcast Clip Maker β Audio Watermark & Voice Tag
- Prepare and package an audiobook
- Audiobook Production & ACX QC Studio β Mouth Click Remover β Metadata Editor
- Create a reusable audio bed
- Audio Trimmer β Audio Loop Maker β Loudness Normalizer
- Mix a narrated music bed
- Noise Remover β Auto Audio Ducker β Loudness Normalizer
- Prepare a radio-safe clip
- Audio Trimmer β Audio Censor & Bleep Tool β Loudness Normalizer
- Prepare a mono delivery
- Stereo Phase & Mono Compatibility Checker β Stereo to Mono Converter β Loudness Normalizer
- Shape an intro and outro
- Audio Trimmer β Audio Fade In & Fade Out β Loudness Normalizer
- Transpose for a vocal range
- Song Key Finder β Audio Key Changer & Pitch Shifter β Tempo Changer
- Chapter and publish an episode
- Silence Remover β Podcast Chapter Maker β Audio Watermark & Voice Tag
- Diagnose and repair clipping
- Audio File Analyzer β Fix Clipped Audio & Audio Declipper β Online Audio Limiter
- Prepare a labeled MP3 delivery
- Audio Converter β Metadata Editor β Audio File Analyzer
- Retune and document a reference
- 432Hz Converter β Audio Key Changer & Pitch Shifter β Audio File Analyzer
- Prepare a covered FLAC delivery
- FLAC Cover Art β Audio File Analyzer β Audio Converter
- Diagnose and align stereo channels
- Stereo Phase & Mono Compatibility Checker β Stereo Phase Aligner β Stereo to Mono Converter
- Chop a recording into samples
- Transient Slicer β Audio Splitter & MP3 Chunker Online β Beat Maker
- Condition and deliver a sample pack
- Sample Pack Builder β Transient Slicer β Soundboard
- Pack web or game audio
- Audio Sprite Builder β Procedural SFX Generator β Soundboard
- Author a continuous album image
- Cue Sheet Maker β Metadata Editor β Album Loudness Analyzer
- Build a DJ-ready two-track handoff
- BPM Detector β DJ Transition Maker β Loudness Normalizer
- Export frequency layers for a DAW
- Multiband Stem Splitter β Audio EQ β Audio Splitter & MP3 Chunker Online
- Recover tracks from a CUE album image
- CUE Sheet Splitter β Metadata Editor β Album Loudness Analyzer
- Find and package a reusable sustain loop
- Automatic Loop Point Finder β Audio Loop Maker β Sample Pack Builder
- Diagnose and repair short signal loss
- Audio File Analyzer β Audio Dropout Repair β Loudness Normalizer
- Synchronize a two-recorder production
- DC Offset Remover β Audio Sync Drift Corrector β Batch Loudness Matcher
- Prepare a documented WAV master
- Audio File Analyzer β BWF Metadata Editor β Bit Depth Converter & Dither
Limits and privacy
Core browser DSP keeps selected audio on the device and avoids an upload queue. Optional model-based or system-speech modes are disclosed on their own pages. Practical limits come from decoded duration, channel count, algorithm memory and the current device; compressed audio can expand substantially in memory.