# LoudLAB — Detailed Reference > Expanded knowledge base for AI crawlers building richer context about LoudLAB and its products. For the brief overview, see [llms.txt](https://www.loudlab-app.com/llms.txt). LoudLAB is a developer of professional native macOS audio software. The product line targets streaming, broadcast, podcasting, recording, mastering, and metering workflows on both Apple Silicon and Intel Macs, with perpetual one-time-purchase licensing and a fully-functional 15-day free trial. ## Product line in detail ### AudioCentral macOS menu bar utility for system-level sound control. - Switch the macOS output devices (per-app) from the menu bar without opening System Settings. - Manage per-app and per-device audio volume, routing and quick toggles for system sound preferences. - Bundled audio toolbox: utilities the user reaches for several times a day. - Designed to live in the menu bar with a lightweight footprint. App page: https://www.loudlab-app.com/audiocentral-app ### SoundDesk (current major version 5) Virtual audio mixer for macOS that turns a Mac into a multi-channel mixing console. Typical applications: - Streaming and podcasting — mixing microphones, music beds, video conferencing audio, and game/browser audio in a single console. - Live audio and broadcast — multi-input mixing with low-latency monitoring. - Multitrack recording of live performances. - Plugin hosting — insert Audio Unit (AU) plugins and the bundled cDSP collection on channels and the master section. - MIDI routing — MIDI control surface integration and MIDI Desk Control. Key concepts: - Channels (mono, stereo, MIDI instrument, auxiliary receiver) with input, utilities, inserts, side-chain, aux sends, fader, pan, and output routing. - Buses and Aux receivers for sub-mixing and parallel processing. - The Master Section as the final output stage. - I/O Bus options that route audio between channels. - All-in-One Device to aggregate several interfaces or capture audio from other applications. App page: https://www.loudlab-app.com/sounddesk-app Help: https://www.loudlab-app.com/sounddesk-docs ### SoundDesk Virtual Devices Professional-grade **free** software loopback connectors that route audio between Mac applications with low latency. The user selects a SoundDesk Virtual Device as the output of the sending app and the same device as the input of the receiving app. Product page: https://www.loudlab-app.com/sounddesk-vd Help (within the SoundDesk Help Book): https://www.loudlab-app.com/sounddesk-docs?page=virtual_devices ### Sonic Atom Realtime multi-instrument audio analyser and metering app for macOS. Sessions are saved as .snct files capturing all open meters and their parameter settings. Built-in meters and visualisers: - Level (with peak and RMS modes) - Peak (sample-peak and true-peak) - Multichannel Level - Loudness (momentary and short-term) - Programme / Integrated Loudness - Loudness Range (LRA) - LEQ (various Leq weightings and analysis times) - Level Range - Spectrograph (real-time spectrum) - Spectrogram (time-frequency waterfall) - Goniometer / Phase Correlation (stereo vectorscope) - Power Balance - Oscilloscope - Tuner - Waveform Loudness compliance standards implemented: - ITU-R BS.1770 - EBU R 128 - ATSC A/85 - TR-B32 - OP-59 App page: https://www.loudlab-app.com/sonicatom-app Help: https://www.loudlab-app.com/sonicatom-docs Loudness primer: https://www.loudlab-app.com/sonicatom-docs?page=loudness_intro ### Fluctus and Fluctus Expert macOS multi-file audio editor for newcomers and professionals. Two tiers: - Fluctus — basic editing, recording, format conversion, and loudness control. - Fluctus Expert — the full feature set for advanced editing, mastering, and broadcast loudness compliance. Editing model: - Non-destructive Regions with the Region Inspector for fades, splits, transforms, locking, and parameter editing. - Editor View with Time Ruler, Playhead, Export Markers, Markers, and Region/Marker Finder. - Tool Bar with Selection, Draw, Split, Navigation, Move, Snap, Loop, Metronome, and Speed/Pitch tools. - Plug Chain hosting AU plugins and the bundled cDSP insert collection on the project output. - Automation Layers for time-based parameter automation. - Project Preferences (editor style, grid, tempo, beats per bar, metronome, master gain/balance, automation, MIDI control) and Audio Preferences (input/output interfaces, sample rate, buffer size, max CPU). - Import and export — drag and drop, batch export via Markers, project bouncing, metadata, dither, and the cDSP Resampler. - Crash recovery for recovering work after unexpected exits. App page: https://www.loudlab-app.com/fluctus-app Help: https://www.loudlab-app.com/fluctus-docs ## Buy and try - [Store](https://www.loudlab-app.com/buy): All apps and bundles. One-time purchase, perpetual licence, no subscription, free updates within major versions. - [Free trials and installers](https://www.loudlab-app.com/demos): 15-day fully-working trial downloads for every product. - [Downloads and resources](https://www.loudlab-app.com/download): Installers, project files, and additional resources. ## Technical specifications - [SoundDesk specs](https://www.loudlab-app.com/sounddesk-spec): Audio formats, channel counts, supported plugin types, and macOS system requirements. - [Sonic Atom specs](https://www.loudlab-app.com/sonicatom-spec): Supported meters, loudness standards (ITU-R BS.1770, EBU R128, ATSC A/85), and macOS system requirements. - [Fluctus specs](https://www.loudlab-app.com/fluctus-spec): Supported file formats, the cDSP insert collection, and macOS system requirements. ## cDSP processor collection Bundled processing collection shared across the LoudLAB apps. Individual processors include: - Graphic EQ - Parametric EQ - Parametric Linear-Phase EQ - Linear-Phase Match EQ - DeNoiser - Pitch Shifter - DeEsser - Compressor - Expander - Gate - Leveler - Maximizer / Limiter - DC Blocker - MS Encoder / Decoder - Spectrograph - Goniometer - Loudness and True-Peak Meter - RMS and Peak Meter - Tube - Analyser-focused meters (Sonic Atom — see the Sonic Atom section above for the full list) Availability and the exact set vary per host application — see each app's help collection for the canonical list. ## Bundles Discounted multi-app bundles available from the Store at https://www.loudlab-app.com/buy: - [Pro Bundle](https://www.loudlab-app.com/buy): Fluctus Expert + Sonic Atom + SoundDesk. - [Musician Bundle](https://www.loudlab-app.com/buy): Fluctus Expert + SoundDesk. - [RT Bundle](https://www.loudlab-app.com/buy): Sonic Atom + SoundDesk. - [LE Bundle](https://www.loudlab-app.com/buy): Fluctus + SoundDesk. ## Help books Each app ships with a full Apple Help Book. - [SoundDesk help](https://www.loudlab-app.com/sounddesk-docs): Channels, busses, plugins, MIDI control, and the cDSP insert collection. - [Getting started](https://www.loudlab-app.com/sounddesk-docs?page=getting_started) - [Index of terms](https://www.loudlab-app.com/sounddesk-docs?page=index_terms) - [Sonic Atom help](https://www.loudlab-app.com/sonicatom-docs): Meters, loudness standards, and the cDSP analyser collection. - [Getting started](https://www.loudlab-app.com/sonicatom-docs?page=getting_started) - [Introduction to loudness standards](https://www.loudlab-app.com/sonicatom-docs?page=loudness_intro) - [Index of terms](https://www.loudlab-app.com/sonicatom-docs?page=index_terms) - [Fluctus help](https://www.loudlab-app.com/fluctus-docs): Editing, recording, plugins, automation, and the cDSP insert collection. - [Getting started](https://www.loudlab-app.com/fluctus-docs?page=getting_started) - [Index of terms](https://www.loudlab-app.com/fluctus-docs?page=index_terms) ## Licensing and purchasing Operating system: - macOS only. - Compatible with both Apple Silicon and Intel (64-bit) Macs. Licence model: - Perpetual, one-time purchase. No subscription, no recurring fees. - Free updates within major versions. - Trial: 15 days, fully functional, no payment required to start. Payment: - Direct purchases use Paddle as the merchant of record. Accepted methods include major credit and debit cards plus PayPal. - Mac App Store purchases use Apple ID and Apple's payment infrastructure. Refunds: - Direct purchases: 15-day refund window — contact LoudLAB support to arrange. - App Store purchases: handled by Apple via the App Store refund process. VAT and GST: - Business buyers can add tax ID and company details at checkout, or within 60 days post-purchase, for tax-free invoicing (excluding the United States). Security and notarisation: - All applications comply with current Apple notarisation and security requirements. - No system security setting changes are required to install or run the apps. ## Support and community - Contact and support: https://www.loudlab-app.com/contact - FAQ: https://www.loudlab-app.com/faq - Community forum: https://www.loudlab-app.com/user-area - Tutorials (forum category): https://www.loudlab-app.com/user-area#/categories/tutorials- ## Press and media - Press & Media Kit: https://www.loudlab-app.com/press Boilerplate, product fact sheets, brand assets, screenshots, and press contact for journalists and reviewers. ## Legal - Terms and Conditions: https://www.loudlab-app.com/terms-and-conditions - End User License Agreement: https://www.loudlab-app.com/EULA - Privacy Policy: https://www.loudlab-app.com/privacy-policy ## About LoudLAB LoudLAB focuses on native macOS audio software — mixing, metering, editing, and system sound control. Products are designed for both professional broadcast/recording workflows and prosumer creators. - Website: https://www.loudlab-app.com - Mac App Store developer page: https://apps.apple.com/developer/loudlab/id537680353 ## Optional - [Brief overview (llms.txt)](https://www.loudlab-app.com/llms.txt): Concise top-level reference for crawlers with tight context budgets. - [Sitemap](https://www.loudlab-app.com/sitemap): Full enumerated URL list. - [Robots policy](https://www.loudlab-app.com/robots.txt): Crawler access rules. - [Newsletter signup](https://www.loudlab-app.com/subscribe): Updates on new releases and discounts.