Threshold Lab Audio Laboratory

Product tour · macOS edition in development

One laboratory.
Six connected workspaces.

Threshold Lab meets the listener at several levels: a finished session to explore, an explanation to study, an AI-assisted plan to inspect, or a complete timeline to author by hand.

Tour the workspaces Open the learning center
31Complete studio bundles
40–1200 HzCarrier range
0.5–40 HzBeat-difference range
Up to 12Local profiles

Current macOS interface

The feature list is extensive. The application makes it concrete.

Threshold Lab keeps advanced controls visible without turning every task into the same screen. These current captures show the manual workbench, the Library, and profile separation at full application scale.

Session Creator
Threshold Lab Session Creator showing session controls, voice settings, transport, status panels, and the editable binaural stack.
Session Creator The complete manual workbench, from transport to stacked tone layers.
Session Library
Threshold Lab Session Library showing a ready-to-listen calibration design and its prompt, plan, description, and WAV learning bundle.
Session Library Finished audio and its construction record stay together.
Local Profiles
Threshold Lab Local Profiles showing profile statistics, profile switching, and editable local identity fields.
Local Profiles Separate working histories for as many as twelve people or practices.

The application map

A clear place for every stage of the work.

Workspaces stay distinct so listening, planning, authoring, education, and reflection do not collapse into one complicated screen.

01Protocol

A repeatable way to learn from listening.

Protocol explains a practical loop: orient, calibrate, choose a baseline, listen, observe only if useful, change one meaningful variable, and return safely.

  • Comfort and headphone calibration
  • Comparison-first experimentation
  • Reliable return as a design requirement
02Education

Science and a complete user guide inside the app.

Seven Learn chapters explain audio perception, frequency vocabulary, sound beds, voice guidance, session architecture, evidence, and safety. Fourteen guide chapters cover every workspace and advanced field.

  • Worked binaural-frequency examples
  • Noise color and nature-bed reference
  • Advanced tone-layer field guide
03AI Lab

Natural-language planning without an opaque result.

Describe the intended session in ordinary language. A supported provider proposes a bounded plan, then Threshold Lab validates and displays its audio, narration, and protocol timelines before local rendering begins.

  • Built-in example based on The Witness at the Threshold
  • Generate, clear, import, and export plan controls
  • Local voice rendering, audition, and WAV export

Provider credentials belong to the user. The provider proposes JSON; the app performs narration and procedural audio rendering on the Mac.

04Session Library

A listening library that also teaches construction.

Twenty curated design blueprints span eight families. Eleven additional original sessions bring the current studio library to 31 complete prompt, plan, description, and WAV bundles. A fresh installation includes the curated blueprints and renders their WAVs locally.

  • Twenty built-in blueprints plus eleven additional original sessions
  • Independent transport for ready audio: play, pause, stop, previous, and next
  • Prompt, plan, and description inspection before rendering
  • Direct opening in AI Lab for adaptation or rendering
05Experience Records

Optional observations tied to the exact session version.

Record body rest, awareness continuity, return quality, free-form observations, and a possible next change. Every field is optional.

  • Readable local JSON records
  • No streaks, grades, required entries, or locked content
  • Direct link back to the related session version
06Session Creator

The advanced manual workbench.

Start from a guided preset, an explorer preset, imported text, a session recipe, an AI plan, or external audio. Then edit the complete timeline and signal architecture.

  • Editable, reorderable timed segments
  • Stacked tone layers with per-layer routing, offsets, gain, and fades
  • Voice, noise, nature, binaural, and master mix controls

Session Creator deep dive

Every important audio choice remains explicit.

A segment may carry as many as eight independent tone layers. Each layer has a carrier pair, beat-difference journey, gain, channel routing, active window, and edge fades.

Tone, noise, nature, voice, and master remain separate buses, making it possible to preserve narration clarity and headroom without rewriting the timeline.

ControlRange or choicesWhat it changes
Carrier center40–1200 HzAudible center pitch
Beat difference0.5–40 HzLeft/right frequency separation
CurveHold or linearFixed value or gradual journey
RoutingBoth, left, rightStereo pair or advanced single-channel texture
Layer windowOffsets + fadesWhere a layer enters and leaves its parent segment
Voice speed.75, 1.0, 1.25Local narration delivery

Five independent buses

Layered by design. Balanced by ear.

The app reports digital gain, but it does not pretend to know the sound pressure at the ear. Headphones, system volume, fit, and hearing remain part of the complete playback chain.

01

Binaural / Tone

All generated tone pairs and stacked layers.

02

Noise

One of seven procedurally shaped noise colors.

03

Nature

Ocean, rain, waterfall, stream, or none.

04

Voice

Rendered or imported narration with stereo pan.

05

Volume / Master

The complete output with session-edge fades.

AI-assisted, user-directed

Planning is online only when you request it. Rendering stays local.

The Mac App Store edition is designed for a provider API key supplied by the user and stored with macOS secure storage. No AI subscription or provider usage is bundled with the application.

Review the complete data boundary
  1. 1
    Your requestIntention, duration, style, and constraints
  2. 2
    Selected providerReturns a proposed structured plan
  3. 3
    Local validationChecks limits, timing, fields, and return structure
  4. 4
    Local renderingVoice, tones, beds, playback, and WAV export

Learn from complete examples

The Library reveals the source materials before you render the sound.

The built-in collection contains twenty curated blueprints across eight design families. Eleven additional original sessions bring the current studio library to 31 complete examples. Prompt provenance remains visible, and a local render completes the fourth part of each new bundle.

Calibration Foundation Witness Silence Study Return Confidence Loving Awareness Threshold Variability Integration
  • TXTPromptWhy the session was requested
  • JSONPlanHow the session is timed and built
  • TXTDescriptionWhat the finished plan does
  • WAVLossless masterCompletes the bundle after local rendering

A shared app with personal workspaces

Profiles organize the work. Themes make the laboratory comfortable.

Up to twelve local profiles can keep separate current sessions, pinned items, history, voice choice, and saved AI Lab state on one Mac.

Profiles are an organization tool, not an operating-system security boundary. The installed Library, exported files, Experience Records folder, appearance, and AI connection remain shared within the same Mac login.

JW AR MK SL
Light Dark System Custom

What the first edition is designed to deliver

A serious creative instrument that still teaches the new user what each control means.

Original learning library Built-in science education Fourteen-chapter user guide AI-assisted plan creation Direct manual authorship Local narration rendering Lossless WAV export Readable companion files Optional Experience Records Up to twelve local profiles Light, dark, system, and custom themes Clear safety and evidence boundaries

Continue the tour

Understand the technology before deciding how to use it.

The learning center explains binaural perception, frequency vocabulary, noise colors, voice-guided design, evidence limits, and listening safety.

Enter the learning center