BUTE Loudness Analyser 2 by Signum Audio loudness metering plugin interface

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

Rated 4.7/5 on Plugin Boutique (359 ratings)

BUTE Loudness Analyser 2 is a loudness metering plugin from Signum Audio for measuring short-term and momentary loudness, True Peak and RMS in mixing, mastering and post-production sessions.

VST3VST2AUAAXWindowsmacOS64-bit

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Free trial available from the developer

01Overview

BUTE Loudness Analyser 2 is the metering backbone of Signum Audio's loudness tools. It is built for work where levels must meet a delivery specification, such as broadcast, streaming, film, games and podcasts. Its history overview lets you browse up to 10 hours of loudness data at a glance, which suits long-form content. The developer describes it as offering high-end quality at a competitive price.

Best for

Streaming loudness masters
Broadcast delivery compliance
Long-form podcast levels
Film and dialogue balancing
Game audio levels
Mastering loudness checks

Developer: Signum Audio
Category: Metering
Store: Plugin Boutique

02Key features

What you get

Smart loudness metering tool focused on pro-audio workflows
Interactive history overview of up to 10 hours of loudness data
Red and yellow alerts flag areas that need attention
Automatic re-metering that syncs on load and follows DAW adjustments
Resizable compact read-out for short-term, momentary and True Peak
Built-in presets for major streaming and broadcast loudness standards
Linear phase upsampling for True Peak measurement
Stereo or Surround version, with Surround up to Atmos 7.1.2

03In depth

Metering Views and Workflow Features

The history overview is fully interactive, so you can jump to any point in a long program and see where loudness drifts. A custom alert system marks problem areas with red (severe) or yellow (warning) pointers, and the thresholds are set in the settings panel.

The plugin re-meters automatically on load and picks up adjustments you make in the DAW, reflecting them on the graphical display. Session data can be reloaded, and metering data can be saved, loaded and exported. The compact read-out is resizable both vertically and horizontally, so you can keep the numbers visible while saving screen space.

Display settings let you switch between True Peak and metering modes, relative and absolute scales, and max and live readings.

Standards Presets and Surround Support

BUTE Loudness Analyser 2 includes built-in presets for 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 Stereo version covers standard stereo work. The Surround version adds support for multi-channel configurations up to Atmos 7.1.2 and auto-detects the DAW channel layout, with a dropdown to select mono, stereo or surround. Signum Audio also states that free future updates are included.

The meter uses linear phase upsampling for True Peak measurement, and an IEC 60268-18 meter bar fallback is available for a more analogue-style display.

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 is BUTE Loudness Analyser 2 used for?

It is a loudness meter plugin for checking short-term and momentary loudness, True Peak and traditional RMS. It is aimed at mixing, mastering and post-production work where audio must meet a delivery specification.

Which formats and operating systems does it support?

It is available as VST3, VST2, AU and AAX, and runs on Windows and macOS. It is a 64-bit plugin, and a trial is available.

What do I need to run it?

It requires macOS 10.9 Lion or later, or Windows 7 or later, 64-bit only. The AAX version requires Pro Tools 12.6 or later.

Does it include loudness presets for streaming platforms?

Yes. Built-in presets cover standards and recommendations including EBU R128, ATSC A/85, Spotify, YouTube, Netflix and TIDAL, and you can save your own presets.