CYGNUS Lite
Current status: CYGNUS Lite is built and configured, but it is not yet wired into production. The page describes the implemented configuration and its target operating model.
Live conversation doesn't wait. When a person is sitting across from an AI avatar, speaking naturally, reacting in real time, the perception system has to keep up. Every millisecond of processing delay is a millisecond where the avatar is responding to stale information. In real-time interaction, speed isn't a nice-to-have. It's the difference between perception that feels alive and perception that feels disconnected.
CYGNUS Lite is the real-time configuration of the CYGNUS signal extraction engine. It processes the same three channels as CYGNUS Standard (facial, vocal, and postural), but it's been engineered from the ground up for speed. Every decision in CYGNUS Lite's architecture optimizes for one thing: delivering accurate behavioral signals fast enough to keep pace with live human conversation.
This isn't a stripped-down version of CYGNUS Standard. It's a purpose-built instrument for a fundamentally different operating environment.
A guided audio version of this page, adapted for clarity and flow rather than read word for word.
Speed is part of the perception quality
CYGNUS Standard processes up to 45 Action Units, the full prosodic feature set, and the complete postural parameter set at maximum resolution. For offline analysis, deep perception sessions, or research, that depth is exactly right. But maximum resolution comes with computational cost, and computational cost means latency.
In a live conversation, latency kills the experience. If the avatar takes 2 seconds to process what it just saw, the person has already moved on to a new thought, a new expression, a new emotional state. The avatar's response will be based on information that's already outdated. Worse, the person will feel the lag. Conversation has a rhythm, and perception that can't keep up with that rhythm breaks it.
CYGNUS Lite solves this by making intelligent tradeoffs between depth and speed. It doesn't process less. It processes smarter.
Same three channels. Different operating philosophy.
Signal Selection
CYGNUS Standard extracts all 45 Action Units simultaneously. CYGNUS Lite extracts a priority subset: the Action Units that carry the most behavioral information in conversational contexts.
Research consistently shows that a subset of Action Units accounts for the vast majority of meaningful facial signal variation in conversation. Brow movements (AU1, AU2, AU4), eye region dynamics (AU5, AU6, AU7), and mouth movements (AU12, AU15, AU17, AU20, AU24) carry more conversational signal per unit of computation than the full set. CYGNUS Lite focuses its processing budget on these high-value signals.
This doesn't mean the other Action Units are irrelevant. For deep analysis, subtle signals like AU14 or AU22 can be revealing. But in a live conversation where the avatar needs to respond in sub-second timescales, the priority set captures what matters most for real-time behavioral awareness.
Processing Pipeline
CYGNUS Standard runs its extraction pipeline in depth-first mode: every frame gets full processing before results are emitted. CYGNUS Lite runs in speed-first mode: results are emitted as soon as the priority signals are extracted, and additional processing happens in the background if spare compute cycles are available.
This means CYGNUS Lite's output arrives faster and more frequently. Instead of waiting for a complete extraction pass, the avatar receives continuous signal updates at a rate that matches conversational tempo.
Vocal Feature Set
The vocal channel in CYGNUS Lite extracts core prosodic features: fundamental frequency, speech rate, volume dynamics, and pause detection. These are the vocal signals most relevant for real-time conversational adaptation. CYGNUS Lite keeps the vocal channel strong by prioritizing the signals that drive live responsiveness first, while deeper secondary markers can remain available for non-live or extended analysis modes.
Postural Tracking
CYGNUS Lite tracks the primary postural parameters: head position, torso orientation, and a composite activity index. The design focus is immediate behavioral relevance inside live interaction. Standard mode can add deeper postural granularity, but Lite still preserves the signals that matter most for moment-to-moment adaptation.
Signals that arrive in time to matter
Avatar Responsiveness
When CYGNUS Lite feeds signals into the avatar pipeline, the avatar can adapt its behavior within the natural flow of conversation. If the person's facial signals shift, the avatar can adjust its tone in its next response. If the person's speech rate drops and pauses lengthen, the avatar can slow down and give more space. If postural engagement increases, the avatar can match that energy.
None of this works if the signal data arrives too late. CYGNUS Lite's sub-second delivery ensures the avatar is always responding to what's happening now, not what happened three seconds ago.
Paired with ORACLE RT
CYGNUS Lite provides the signal stream. ORACLE RT provides real-time pattern recognition on that stream. Together, they form a complete real-time perception system: signals are extracted and patterns are detected within the same sub-second window.
This pairing is the core of live avatar perception. CYGNUS Lite tells the system what the face, voice, and body are doing right now. ORACLE RT tells the system what those signals mean in combination. GLUE packages this into context that the language model can use to generate an informed response.
Paired with CANON
CANON's personal baseline calibration enhances every CYGNUS Lite extraction. When CANON has accumulated enough data about a person's typical facial dynamics, vocal range, and postural patterns, CYGNUS Lite's signals become personally meaningful.
In live sessions, CANON provides the baseline context that makes CYGNUS Lite's signals interpretable at the individual level. The signals themselves are the same regardless of CANON's status. But the downstream interpretation becomes dramatically more precise with personal calibration.
Standard vs Lite (Channel by Channel)
Lite is not the weaker column. It is the live column. Standard maximizes total depth. Lite maximizes signal usefulness per millisecond, so the system can stay inside the rhythm of an active conversation.
The choice is about context, not quality
The choice isn't about quality. It's about context.
Use CYGNUS Lite when the interaction is live. An avatar is responding in real time. A coaching session is happening synchronously. A video call is active. Any scenario where the person expects natural conversational pacing and where perception delay would degrade the experience.
Use CYGNUS Standard when the content has already been recorded. An uploaded video needs deep analysis. A research dataset is being processed. A session recording is being reviewed after the fact. Any scenario where depth matters more than speed and where the person isn't waiting for a real-time response.
Both produce valid, accurate signal data. The difference is which signals are prioritized and how fast they're delivered. CYGNUS Lite gives you the most important signals immediately. CYGNUS Standard gives you all the signals at maximum depth.
Same privacy model, narrower live scope
CYGNUS Lite produces the same data classification as CYGNUS Standard: Raw Data. The output is anonymous numerical values with no identity attached. No images are stored. No audio recordings persist. Frames and audio are consumed by the extraction process and discarded immediately.
The only difference is the scope of the output: fewer data points per frame, but at the same quality within those data points. A priority Action Unit extracted by CYGNUS Lite has the same precision and the same measurement methodology as the same Action Unit extracted by CYGNUS Standard.
A real-time extraction core developers can build on
CYGNUS Lite is available as an open-source component for developers who want to integrate real-time signal extraction into their own systems. The open-source release includes the core extraction pipeline and can be integrated with custom downstream processing or paired with ORACLE RT for a complete real-time perception stack.
For developers building AI avatars, virtual agents, or interactive systems that need behavioral awareness, CYGNUS Lite provides a foundation that can be deployed independently or as part of the broader OPM pipeline.
The practical questions around speed, scope, and deployment
For the signals it extracts, no. Each individual Action Unit, prosodic feature, or postural parameter is measured with the same methodology and the same precision. CYGNUS Lite extracts fewer signals, not worse signals. The priority set is the most informative subset for conversational contexts.