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Show HN: Live breath detection and biofeedback from a phone microphone

read original get Biofeedback Smartphone App → more articles
Why This Matters

This innovative app demonstrates how smartphones can be used for real-time breath detection and biofeedback, promoting mindfulness without distractions or additional devices. By processing audio locally, it offers a private and accessible way for users to increase self-awareness through their breathing patterns, potentially transforming mental wellness tools in the tech industry.

Key Takeaways

shii·haa breath detection

Live breath detection and biofeedback using a phone microphone.

Can an app use breathing feedback to increase self-awareness instead of becoming another distraction?

That question is the reason this project exists. Most "mindfulness" software ends up competing for attention rather than handing it back. We wanted to know whether the phone could do the opposite: stay quiet, listen to how you breathe, and reflect it back closely enough that you notice your own pattern, without a wearable, without a coach, without turning it into a game.

The hard part is the listening. A phone microphone in a real room is a messy signal: room tone, traffic, a fan, the phone resting on fabric, the person shifting position. Out of that, we try to recover where one breath ends and the next begins, and which phase you are in right now.

What it does

Reads audio from the phone microphone and processes it on-device .

and processes it . Estimates the current breathing phase (inhale, exhale, and the transitions and holds between them) and tracks completed breath cycles.

Drives biofeedback: the interface responds to the breath in close to real time, so the signal you see or feel is your own.

What it does not do

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