Support
Coquí Chorus — Version 1.0
Frequently Asked Questions
What is Coquí Chorus?
Coquí Chorus is a spatial stochastic synthesis app that simulates the nighttime chorus of Puerto Rico's E. coquí tree frog. It uses bioacoustically accurate models to generate a realistic, ever-evolving soundscape.
Does the app need an internet connection?
No. All audio is generated locally on your device in real time. Coquí Chorus works completely offline.
What do the temperature controls do?
Temperature affects call rate and frequency, just like in nature. Warmer temperatures produce faster, higher-pitched calls (Q10 ≈ 2.0, +0.8%/°C frequency scaling). You can adjust temperature to hear how the chorus changes across conditions.
What is the difference between the two habitats?
Puerto Rico is the native range (18–30°C) with natural population density. Hawai'i represents the invasive population (15–26°C) with a different density model reflecting ecological conditions there.
How does Spatial Audio work?
Each virtual frog is placed at a position around you. The app applies inverse-distance attenuation (closer frogs are louder) and propagation delay (closer frogs are heard sooner) to create an immersive 3D soundscape. Use headphones for the best experience.
Are the call frequencies accurate?
Yes. The fundamental frequencies are calibrated to field recordings: approximately 1529 Hz for the “co” note and 2713 Hz for the “quí” note, with natural harmonic overtones.
The app is not producing any sound.
Make sure your device is not in silent mode and the volume is turned up. If using Bluetooth headphones, ensure they are connected and selected as the audio output. Try force-quitting and reopening the app.