https://grainworks.tech/tags/audio/Recent content in Audio on grainworksHugoen-USWed, 10 Jun 2026 16:00:00 -0400https://grainworks.tech/projects/pocket-recorder/Wed, 10 Jun 2026 16:00:00 -0400https://grainworks.tech/projects/pocket-recorder/<p><strong>Status: Design research complete.</strong></p> <p>A design exploration for a pocket-sized voice recorder — I²S digital audio capture, local storage, optional LoRa sync for off-grid field recording, and integration with Hermes backend for AI transcription and note extraction.</p> <h2 id="design-goals">Design Goals</h2> <ul> <li><strong>Pocket-sized</strong> — small enough to carry always, discrete enough to use in meetings</li> <li><strong>High-quality audio</strong> — I²S MEMS microphone, 16-bit/44.1kHz or higher</li> <li><strong>Local-first</strong> — onboard storage (SD or SPI flash), no cloud dependency</li> <li><strong>Off-grid sync</strong> — LoRa-based sync to the Grainworks mesh when WiFi is unavailable</li> <li><strong>AI pipeline</strong> — upload to Hermes for transcription, summarization, and note extraction</li> </ul> <h2 id="key-questions">Key Questions</h2> <ul> <li>Battery life tradeoffs (continuous recording vs. voice-activated)</li> <li>Storage capacity vs form factor (how many hours before offload?)</li> <li>Wireless sync strategy (WiFi when available, LoRa when not)</li> <li>Transcription accuracy with I²S MEMS mics in real-world acoustic environments</li> </ul> <h2 id="source-files">Source Files</h2> <ul> <li><strong>Design doc:</strong> <code>/Volumes/Mini_1Tb/Projects/research/pocket-recorder-design.md</code></li> </ul>