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• interdimensionalmeme@lemmy.ml ⁨1⁩ ⁨day⁩ ago

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  • interdimensionalmeme@lemmy.ml ⁨1⁩ ⁨day⁩ ago

    🛰️ Raytheon CAT&EAR System

    Cybernetic Auditory Telemetry & Echolocation with Anisotropic Reception

    Engineering Requirements Draft — v1.0

    📑 Document Overview

    This document outlines the full set of engineering requirements for the CAT&EAR system, a wearable, cybernetic auditory perception platform. CAT&EAR is a heterogeneous, phased-array auditory sensor suite that uses biomimetic design, ultrasonic telemetry, laser vibrometry, and advanced audio signal processing to enable real-time environmental awareness and communication.

    The system is designed to operate autonomously, using only open standards and open-source software, while supporting embedded AI-driven perceptual functions. This document reflects both functional and non-functional requirements for CAT&EAR across all relevant subsystems.

    System requirements

    🎤 Microphone Array & Acoustic Sensors

    Mic Diaphragm Diversity – Use MEMS and larger diaphragm mics.
    Earshape Mic Placement – Place mics at parabolic acoustic focus points.
    Ultrasound Transceivers – Include US sensors for echolocation and darksight.
    Ultrasound Data Comms – Use US transceivers for covert device communication.
    Heterogeneous Phased Array – Mic array shall be non-planar and diverse.
    Frequency-Profile Diversity – Use mics with different frequency sensitivities.
    Anisotropic Reception – Account for directional response patterns from ear shape.
    Psychoacoustic Focus – Detect and prioritize perceptually relevant signals.
    Mic Cross-Correlation – Synchronize all mic data spatially and temporally.
    Real-Time Acoustic Map – Build a 3D sound map from multi-mic input.
    Mic Calibration Pattern – Provide physical pattern for mic array calibration.
    Open Hardware Calibration – Use only open hardware for calibration tools.
    

    🧭 Ultrasonic Subsystem

    Ultrasound Mapping – Perform echolocation for 3D environmental awareness.
    True Transceiver Mode – Ultrasound sensors must transmit and receive.
    Ultrasound Band Amp – Include amplifier suitable for US transmission.
    Covert US Communication – Transmit data in inaudible US band.
    Spatial Mapping via US – Derive positional data from ultrasound TOF.
    

    👂 Ear Shape & Actuation

    Dynamic Ear Focus – Use moving ear shapes to focus sound.
    Servo Actuated Ears – Use servos to reorient ears toward signals.
    Double Helical Gears – Use quiet gears for mechanical actuation.
    Acoustic Dampened Gears – Coat gears to suppress audible reflections.
    Ultrasonic Motors Preferred – Prefer silent ultrasonic motors over gears.
    Backwards Reception – Ears must support rearward sound reception.
    Flexible Ear Shaping – Shape ear surfaces dynamically for beam control.
    Motion-Linked Focus – Ear movement must track beamforming direction.
    No Mechanical Noise Leakage – Prevent gear vibration from reaching mics.
    

    📡 Communication & Connectivity

    Wi-Fi + BLE Only – Support open wireless; no DECT or proprietary links.
    Open Standard Protocols – Use only open protocols for communication.
    Multichannel Audio Streaming – Support multiple audio streams over network.
    Driverless Operation – Require no proprietary drivers for functionality.
    

    🧠 Software & Signal Processing

    Open Source Only – All code and firmware must be fully open source.
    Offloaded Processing – All signal processing handled off-device.
    Max 20ms Latency – Entire processing pipeline must be under 20ms.
    Live Beamforming – Perform real-time signal steering and separation.
    Real-Time Source Relevance – Continuously rank sources by importance.
    Noise vs Signal Detection – Separate noise from structured signals.
    Real-Time Source Switching – Auto-switch auditory focus intelligently.
    Plug-and-Play Sensor Config – Support hot-swappable or modular sensors.
    Onboard Sub-Vocal Control – Allow silent vocal commands for control.
    

    🎧 Earbuds / Audio Output

    Canal Mic Feedback Loop – Use in-ear mics for real-time output correction.
    Open Firmware Audio Chain – Use programmable amps with open firmware.
    Drive Adaptation by Feedback – Earbud output adjusts based on canal feedback.
    

    🎮 Control Interfaces

    Myoelectric Input Support – Accept muscle signals as control input.
    Manual Steering Mode – One ear for beam steering via myoelectric input.
    Signal Selection Mode – One ear for selecting tracked signal via input.
    Sub-Vocal Command Mode – Use throat activity to control high-level tasks.
    

    🔦 Laser Pointer System

    Dual Laser Module – Use both red (visible) and IR (covert) lasers.
    Laser Aiming Reflects Beam – Beam direction matches acoustic focus.
    IR Laser for Stealth – IR laser used to show focus discreetly.
    

    🧾 Transcription & Recognition

    Live Audio Transcription – Convert incoming audio to live text.
    12 Channel Transcription – Handle at least 12 simultaneous streams.
    MP3QR & Digital Decoding – Decode digital audio formats in real time.
    Live Text Summarization – Generate summaries from live transcripts.
    Voice Signature Tagging – Identify and label speakers in text.
    

    💾 Storage

    4TB Local Storage – Minimum onboard capacity of 4 terabytes.
    

    ⚖️ Physical & Power

    ≤150g Head Weight – Total device weight must not exceed 150g (no battery).
    1-Min No-Battery Buffer – Must operate 1 minute without battery power.
    Dual Battery Swap – Hot-swap batteries without power loss.
    

    🎛️ Audio Encoding & Codecs

    HW Audio Codec Support – Hardware encoder/decoder for all ffmpeg codecs. 🧱 System Design Principles
    Modular Hardware – All subsystems must be physically modular.
    User Privacy by Default – All processing must be local and secure.
    No Cloud Dependency – System must function entirely offline.
    Mainline Linux Support – Fully supported by Linux kernel and stack.
    Open Protocol APIs – All I/O and control must use open APIs.
    

    🛡️ Counter-Acoustic Defense

    Passive Threat Detection – Detect and localize hostile audio sources.
    Acoustic Counter-Battery – Track and indicate direction of intrusive signals.
    

    🧪 Fallback & Safety

    Failsafe Passive Mode – Fall back to passive listening if system fails.
    

    🌡️ Environment & Durability

    Passive Cooling Only – No fans; silent passive thermal control only.
    Water-Resistant Design – Use hydrophobic materials for exterior protection.
    

    🧰 Maintenance & Testability

    Open Test Fixtures – All testing hardware must be reproducible and open.
    Self-Test & Calibration – System must run periodic self-alignment checks.
    Community Repairable – Designed to be easily maintained by users.
    

    🔗 Licensing

    Fully Open Licensed – All hardware, firmware, and software must use open licenses.
    

    🔦 Laser Microphone Capability

    Laser Mic via Microprism – Dual laser system shall include a microprism to enable laser microphone functionality.
    Aimed Surface Listening – System shall capture audio from vibrating surfaces (e.g. windows, walls) via laser beam reflection.
    Covert Through-Wall Listening – IR laser + sensor must support long-range audio pickup from remote surfaces without line-of-sight audio.
    

    ✅ Summary

    Total Requirements: 76
    System Class: Wearable, cybernetic, audio perception platform
    Design Goals: Open-source, real-time, stealth-capable, user-repairable

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