BUTE Loudness Analyser 2 Surround by Signum Audio loudness metering plugin interface

BUTE Loudness Analyser 2 (Surround): Loudness Metering Plugin by Signum Audio Free Download

Rated 4.7/5 on Plugin Boutique (15 ratings)

BUTE Loudness Analyser 2 (Surround) is a loudness metering plugin from Signum Audio for pro-audio workflows. It measures short-term and momentary loudness, True Peak and RMS, and supports mono, stereo and surround channel setups.

VST3VST2AUAAXWindowsmacOS64-bit

AVAILABLE ATPlugin Boutique

Download Now

Free trial available from the developer

01Overview

BUTE Loudness Analyser 2 is the metering tool at the core of Signum Audio's BUTE Loudness Suite 2. It is aimed at engineers who need to check loudness against a delivery specification or a target platform before a project is finished. The Surround version extends support to multi-channel configurations up to Atmos 7.1.2, and the plugin is available in VST3, VST2, AU and AAX formats.

Best for

Streaming loudness checks
Broadcast delivery compliance
Dialogue and music balancing
Surround mix metering
Long-form content review
Mastering level control

Developer: Signum Audio
Category: Metering
Store: Plugin Boutique

02Key features

What you get

Smart history overview for browsing up to 10 hours of loudness data
Custom red and yellow alerts for areas that need attention
Auto re-metering that syncs on load and follows DAW adjustments
Resizable compact read-out view for short-term and momentary loudness
Display modes for True Peak, relative/absolute scale and max/live
Built-in presets for major loudness standards and platforms
Auto-detected channel setup with mono, stereo and surround options
Saves, loads and exports metering data with reloadable sessions

03In depth

Metering and Navigation for Long-Form Content

The history overview lets you browse up to 10 hours of loudness data interactively, which suits long programs, films and podcasts. A custom alert system marks areas that need attention with red for severe issues and yellow for warnings, and you set those thresholds in the settings panel.

Auto re-metering syncs when the plugin loads and reflects adjustments you make in the DAW on the graphical display. The compact read-out view can be resized vertically and horizontally to save screen space while keeping readings visible. Session data can be reloaded, and metering data can be saved, loaded and exported.

Presets and Display Options for Loudness Standards

Built-in presets cover a range of loudness standards and platform recommendations, including ITU-R BS.1770, EBU R128, ATSC A/85, ARIB TR-B32, Spotify, YouTube, Netflix and TIDAL. You can also save your own user-defined presets.

The display can switch between True Peak and metering views, relative and absolute scales, and max or live modes. Short-term and momentary loudness, True Peak and traditional RMS are all shown. Signum Audio says the plugin uses linear phase upsampling for its peak measurements, and it includes an IEC 60268-18 meter bar fallback for a more analogue look.

04Specs

Will it run?

Formats, systems and requirements as listed by Plugin Boutique. Missing details are left out, not guessed.

Developer	Signum Audio
Type	Plugin
Category	Metering
Formats	VST3, VST2, AU, AAX
Operating systems	Windows, macOS
Architecture	64-bit
Free trial	Yes

05FAQ

Questions, answered

What formats does BUTE Loudness Analyser 2 (Surround) support?

It is available in VST3, VST2, AU and AAX formats. The AAX version requires Pro Tools 12.6 or higher.

Which operating systems are supported?

The plugin runs on Windows and macOS. The listed requirements are Windows 7 or higher (64-bit only) and Mac OS X 10.9 Lion or higher.

What is the difference between the Stereo and Surround versions?

The Surround version adds support for multi-channel configurations up to Atmos 7.1.2, along with the mono, stereo and surround channel selection. The Stereo version is also available.