TrailPulse: An Offline-First Spatial Audio Guide for Zero Screen-Time Outdoors

Описание и применение

TrailPulse предоставляет офлайн‑путеводитель с пространственным аудио, позволяя туристам слушать описания местности через наушники без экранов и подключения к сети.

Задача

Outdoor apps that enrich nature experiences often require constant visual attention and rely on cellular connectivity, which is unavailable in many backcountry trails.

Результат

TrailPulse enables hikers to experience spatial audio guides without screens or internet, improving immersion and reliability in remote trails.

Рабочий процесс

• Prepare GPX track at home
• Upload GPX to TrailPulse server
• Server queries Overpass API for POIs
• Generate sensory scripts with Gemma 2 via Ollama
• Convert scripts to audio with ElevenLabs TTS
• Package audio and manifest into a ZIP bundle
• Download bundle to device
• Unpack ZIP with JSZip, store audio in IndexedDB
• During hike, navigator.geolocation polls GPS
• Haversine proximity check triggers alerts within 25–40m
• Play audio vignette through earbuds
• Lock‑screen MediaSession displays landmark name and pause/resume controls

Доказательства

TrailPulse is an offline‑first Progressive Web App (PWA) that converts standard GPX routes into location‑triggered spatial audio narratives.

Источник

Dynamic Haversine geofencing continuously monitors satellite coordinates in the background.

Источник

Gemma 2 was prompted to write concise, 30–45 word sensory scripts focusing strictly on physical touchpoints.

Источник