Sound has a direct impact on our physiological and psychological wellbeing. For example, white noise helps infants sleep, while relaxing sounds reduce stress and anxiety – and have a positive effect on heart rate and blood pressure. In a similar way, Endel uses sound to align your mind and body to any task or goal.
Endel’s generative soundscapes adapt in real-time to different personal inputs – like location, weather, and heart rate.
Your biological clock is in tune with nature’s organic rhythms and cycles. Endel complements these to improve how you feel – night and day.
Endel uses pentatonic scale and pure intonation to create simple sounds that are both pleasant and physiologically natural.
We’ve developed Endel’s sound engine using specially tuned noises to make distracting sounds and harsh interruptions less audible.
How Endel works
The Circadian Rhythm
The base input for Endel is the circadian rhythm: the internal biological clock that regulates the body’s sleep and wake cycles — as well as natural energy peaks and slumps — over a 24-hour period.
However, the circadian rhythm can get disrupted by the surrounding environment.
The surrounding environment affects the body throughout the day and can make the circadian rhythm out of sync. Personal inputs (time zone, natural light, heart rate, motion type) are essential for Endel to realign a user’s current state with the circadian rhythm. It is made possible by an adaptive soundscape.
The resulting soundscape adapts to inputs in real-time. The input that currently matters most is shown in the app below the circadian phase.
Endel compensates for the lack (or excess) of light outside by adapting the soundscape’s intensity.
Endel adjusts the beat to your real-time heart rate, borrowing it from the Health (Google Fit) app and comparing it with your normal resting HR.
Endel reacts to the outdoor temperature with variations in sound.
Endel alters sound intensity according to the number of steps taken per minute during your walking session.
Endel’s sound engine consists of sound layers, modulations, and effects — all created in line with psychoacoustic studies. An algorithm processes user state information and generates a soundscape accordingly — by constructing unique combinations of sound engine components.
This happens on the fly, reacts to changes, and allows Endel to sync a user state with the circadian rhythm.