Harman Professional Solutions has officially announced the release of two landmark software updates, Flux:: Spat Revolution 26.04 and Mira 26.04, signaling a significant leap forward in the field of immersive audio production and real-time system analysis. These updates represent the first major overhaul of the Flux:: ecosystem in over two years, integrating more than a quarter-century of French engineering expertise into a streamlined, unified workflow designed for live performance, fixed installations, and high-end content creation. By introducing AI-driven optimization tools and advanced media playback capabilities, Harman aims to bridge the gap between complex spatial audio design and the practical requirements of modern production environments.
A New Era for Immersive Audio Production
The release of Spat Revolution 26.04 marks a pivotal moment in the evolution of object-based audio. For years, spatial audio mixing required a cumbersome chain of external hardware and specialized software bridges. With the 26.04 update, Flux:: has introduced "Multi Media Recording and Playback," a feature that effectively turns the spatializer into a self-contained production hub. This allows engineers to record immersive sessions directly within the software environment, preserving every spatial coordinate and automation move without the need for an external Digital Audio Workstation (DAW) for playback.
The integrated Media Player is built around a timeline-based architecture. This allows for the storage and recall of multiple session timelines, which is particularly beneficial for theatrical productions or museum installations where different "scenes" or "exhibits" require distinct spatial configurations. Crucially, the software maintains the ability to mix live objects in parallel with pre-recorded content. For a live sound engineer, this means a concert can feature pre-produced immersive soundscapes while still allowing for the real-time spatial positioning of live vocalists or instruments, all within a single interface.
Advanced Show Control and Spatial Logic
Beyond simple playback, the update introduces a sophisticated Cue Sequencer. This tool expands the show-control capabilities of Spat Revolution by allowing users to define programmable events triggered by specific internal or external conditions. Whether triggered by timecode, MIDI, or OSC (Open Sound Control), these automated responses enable complex, conditional system reactions. This level of automation is essential for large-scale theme park installations or complex live broadcasts where manual intervention must be kept to a minimum.
One of the most technically impressive additions is the "Morphed Protection Zone." In previous iterations of spatial audio software, protection zones—areas where audio sources are prevented from getting too close to a listener or a specific microphone—were often restricted to fixed circular models. However, real-world venues are rarely circular. The Morphed Protection Zone allows the software to adapt its safety geometry to the actual physical dimensions of a room. This ensures that as audio sources move through a space, their level behavior remains consistent and spatial transitions remain smooth, regardless of the venue’s architectural irregularities.
Industry Compatibility and Interoperability
As the industry moves toward standardized formats for immersive audio, Flux:: has ensured that Spat Revolution 26.04 remains at the forefront of compatibility. The software now supports the import of Audio Definition Model (ADM) files. This is a critical development for engineers working with Dolby Atmos, as it allows for the direct loading of ADM-WAV files from DAWs like Pro Tools or Nuendo.
Once imported, these files can be rendered into any speaker configuration without the need to recreate automation or export individual stems. This feature is a game-changer for dynamic fixed installations, such as immersive art galleries, where content originally mixed for a standard 7.1.4 home theater setup can be instantly adapted to a custom 32-channel speaker array while preserving the creator’s original intent.
The Spat Revolution plugin has also seen a total overhaul. It now offers comprehensive control over spatialization parameters directly from all major DAWs, including Ableton Live, Logic Pro, and Reaper. In what Harman describes as "Phase 1" of a long-term unification strategy, the core Flux:: processing—which handles source, room, and output channel processing—is now embedded directly into the Spat Revolution audio chain. This integration brings 25 years of high-end signal processing expertise into a single, cohesive user experience.
Mira 26.04: AI-Driven System Optimization
While Spat Revolution focuses on the creative side of audio, Mira 26.04 addresses the technical challenges of system tuning and analysis. The headline feature of this update is the KI-gestützte (AI-powered) Auto-EQ. System tuning has traditionally been a time-consuming process requiring significant expertise to interpret measurement data and apply corrective equalization.
The new Auto-EQ function simplifies this by allowing users to define target frequency curves. A proprietary AI algorithm then analyzes the live acoustic environment and automatically generates EQ settings to match the target. This not only speeds up the setup process for touring engineers but also ensures a level of consistency across different venues that was previously difficult to achieve. To further support industry standards, Mira 26.04 includes native support for Harman’s OF (Optimal Frequency) target curves, ensuring that JBL and other Harman loudspeaker systems can be tuned to factory-preferred specifications with minimal effort.
High-Density Analysis and Measurement Workflows
Modern audio systems are increasingly complex, often involving dozens of discrete zones. To accommodate this, Mira 26.04 now supports an unlimited number of simultaneous input streams, with each stream capable of carrying up to 24 channels. This allows for the real-time, parallel analysis of massive loudspeaker arrays, providing a holistic view of system performance that single-channel analyzers cannot match.
For power users holding Mira Live or Ultimate licenses, the update introduces several workflow enhancements:
- Multiple Session Curves: Users can now create and overlay multiple calculated curves within a single session for easy comparison.
- Automated Measurement Sequences: This feature allows for "hands-free" sequential data acquisition, which is ideal for measuring large seating areas in stadiums or theaters.
- Reference-Free RTA: Real-Time Analysis can now be performed without a reference signal, providing flexibility in environments where a loopback or reference feed is unavailable.
The update also introduces new metrics for loudness monitoring, specifically Peak-to-Loudness Ratio (PLR) and Peak-to-Short-Term Loudness Ratio (PSR). These metrics provide deeper insights into the dynamic range and "crest factor" of a mix, which is vital for broadcast compliance and ensuring that live sound reinforcement does not become overly compressed or fatiguing for the audience.
Chronology and Development Background
The journey to the 26.04 updates began shortly after the acquisition of Flux:: Software Engineering by Harman Professional Solutions. Flux::, founded in France, built its reputation on high-precision plugins and the industry-leading Spat spatialization engine, originally developed in collaboration with the renowned IRCAM (Institut de Recherche et Coordination Acoustique/Musique).
Over the last two years, the development team has focused on merging the "boutique" precision of Flux:: with the "enterprise" scale of Harman. The 26.04 designation follows the naming convention of Harman’s software lifecycle, indicating a major release for the second quarter of 2026. This period of development was marked by intensive beta testing in high-stakes environments, including global concert tours and major sporting events, where the reliability of the Cue Sequencer and the accuracy of the AI Auto-EQ were rigorously vetted.
Broader Impact on the Pro Audio Industry
The implications of these updates extend far beyond simple software improvements. By integrating media playback directly into the spatializer, Harman is challenging the traditional dominance of hardware-centric spatial audio processors. This "software-first" approach allows for greater flexibility and lower entry costs for smaller venues and production houses that want to experiment with immersive audio.
Furthermore, the emphasis on AI-assisted tuning reflects a broader trend in professional audio toward "intelligent" systems. As loudspeaker arrays become more complex and production windows become shorter, the ability for software to handle the "heavy lifting" of acoustic analysis is becoming a necessity rather than a luxury.
The inclusion of multilingual support, specifically Chinese and Japanese, also signals Harman’s intent to capture a larger share of the burgeoning immersive market in Asia, where theme parks and high-tech performance spaces are seeing rapid growth.
Technical Data and System Requirements
To support the advanced features of the 26.04 updates, Harman has optimized the software for modern computing architectures. Both Spat Revolution and Mira are compatible with the latest macOS and Windows operating systems, with specific optimizations for multi-core processors to handle the high computational demands of real-time spatial rendering and AI analysis.
Spat Revolution 26.04 Key Specs:
- Input/Output: Support for up to 256 channels (hardware dependent).
- Sync Protocols: LTC, MTC, Ableton Link, and OSC.
- Format Support: ADM, HOA (Higher Order Ambisonics), VBAP, and more.
- UI Features: Customizable layouts, Daylight Mode, and high-DPI scaling.
Mira 26.04 Key Specs:
- Max Input Streams: Unlimited.
- Channels Per Stream: 24.
- Loudness Standards: ITU-R BS.1770-4, EBU R128.
- AI Engine: Proprietary Flux:: Neural Network for Auto-EQ.
As the first phase of a unified immersive production workflow, Flux:: Spat Revolution 26.04 and Mira 26.04 set a new benchmark for what professional audio software can achieve. By combining creative spatial tools with rigorous analytical capabilities, Harman Professional Solutions has provided a comprehensive toolkit for the next generation of sound designers and engineers. These updates ensure that whether the venue is a local theater or a global stadium, the tools to create and optimize immersive experiences are more accessible, powerful, and intelligent than ever before.