← Back to Specula
- FixWaveform amplitude zoom. The minus button beneath the waveform, which zooms the amplitude back out, now responds reliably on every click.
- NewEBU R128 / ITU-R BS.1770-4 loudness. Momentary, short-term, integrated, loudness range, and 4× oversampled true peak, verified against the EBU Tech 3341 / 3342 loudness test signals. Read it live while a file plays, or offline over the whole file or a time selection.
- NewSpeech-gated loudness with neural speech detection. A bundled Silero VAD model gates loudness to dialogue only, so room tone, music beds, and silence are excluded and podcast and film dialogue read true. It runs fully offline, with no download and no network connection.
- NewA 22-target compliance catalog across four modes. Music reports the gain each platform applies (Spotify, Apple Music, YouTube, Tidal, Amazon Music, Deezer, SoundCloud, AES TD1008); Podcast / Spoken word mixes streaming penalties with the ACX audiobook spec including the −60 dB RMS noise-floor check; VOD verifies the Netflix / Prime / Apple TV+ / Disney+ / Max −27 LKFS dialog-gated band; Broadcast verifies EBU R128, R128 S1 short-form, ATSC A/85 (CALM Act), ARIB TR-B32, and OP-59. Each row gives a hard verdict; Match previews the level by ear and Normalize / Limit TP commit it with a two-pass true-peak limiter.
- NewSpectrum, spectrogram, and stereo views. An FFT spectrum with five selectable windows, a configurable-overlap spectrogram, per-channel peak / RMS / crest / DC, dynamic range, and a stereo correlation and phase scope.
- NewReference compare, up to six files. Load up to six masters, level-match them by integrated LUFS, auto-align to the sample, and hear the A−X residual, the part that actually differs, as its own waveform you can solo, scrub, and export.
- NewNon-destructive editing without a DAW. Trim, cut with a crossfade join, insert silence, gain, fade, invert phase, remove DC, swap channels, split to mono, normalize to a peak or LUFS target, and a standalone Limit TP, all keyboard-driven with 16-level undo. Specula always saves a new file and never overwrites the source.
- NewChapter mode for audiobooks. Segment a book at its silences, score every chapter against the three ACX gates (RMS, true peak, noise floor) and against the book's own median, level every chapter to a common loudness in one move, and put the per-chapter table in the PDF, or export it as CSV.
- NewDialogue mode. Hand-correct the detected speech regions that drive dialog-gated loudness and the noise floor (add / drag / Mark In-Out), with provenance tinting and a JSON sidecar so corrections travel with the file.
- NewSurround and downmix. A per-channel routing matrix with BS.775 and Pro Logic II fold-down presets (real ±90° phase, not just polarity), correct BS.1770 weighting for non-SMPTE multichannel orders such as AAC 5.1 and 7.1, and Render to File to write the routed result.
- NewReports you can hand off. A dark-themed PDF / HTML / JSON report with every metric, a per-target verdict, the loudness curve, and the chapter table. The JSON carries an inline verdict per target so a script can branch on pass/fail without recomputing it.
- NewCommand line and Shortcuts. A
specula command-line tool (analyze / compare / edit / report) ships inside the app, plus eight App Intents and three Finder Services, all on the same engine, so batch QC scripts and automations get the exact same numbers as the app.
- NewBuilt for current macOS. Liquid Glass chrome and an Icon Composer app icon on macOS 26, document-app conventions (Open With, drag onto the Dock, Open Recent, multi-file open), and automatic updates. Free 7-day trial; after it ends you can still run two 5-minute test sessions a day. Requires macOS 14 Sonoma or later.
