Neuraudio is an AI-designed EEG ear product. Consumer EEG has always been a dedicated device you put on for a session — a headband for sleep, a cap for the lab. We put the electrodes inside the earbuds you already wear: dry, continuous, decoded on the device.
Neuraudio picks up microvolt-scale EEG with dry in-ear electrodes, denoises and decodes it on the device, then closes the loop back into audio. No gel, no headband, no round trip to the cloud.
Silver-fabric dry electrodes sit on the cymba conchae, the cavum conchae and the mastoid, with the reference behind the ear. One ADS1299-4 per ear at gain 12 — not 24, because a dry electrode's DC offset commonly runs 50–200 mV and gain 24 would rail.
A 50/60 Hz notch plus a 0.5–95 Hz bandpass, all causal: online processing never touches future samples, or every chunk seam becomes a discontinuity. Artifacts are flagged by amplitude threshold and band-power gating rather than quietly deleted.
ANC means the speaker is never silent — the trouble with ear EEG, and also its cure. The noise-cancelling subsystem already carries feedforward and feedback microphones; those two plus the IMU are exactly the known references artifact cancellation needs. Adaptive cancellation against a known reference is mature DSP. Four-channel blind source separation is not.
Concha-fit, with a stem. 25% taller than AirPods Pro, and the reason is stated plainly: the electrode blade has to span from the cymba to the cavum, and AirPods never have to do that. This is size that comes from function, not from weak design.
| Channels | 8 (4 per ear) |
|---|---|
| Sample rate | 500 SPS |
| Passband | 0.5 – 95 Hz |
| Decoding band | 0.5 – 40 Hz |
| EMG monitor band | 55 – 95 Hz |
| Analog front end | ADS1299-4 × 2 · gain 12 |
| Input-referred noise | 0.23 µVrms |
| Driver | ⌀10 mm dynamic |
| Microphones | MEMS × 3 per ear |
| Active noise cancellation | Feedforward + feedback |
| Inertial measurement | 6-axis per ear |
| End-to-end latency | < 200 ms |
| Per-earbud size | 38.7 × 27.5 × 19.0 mm |
| Size options | 3 blades × 3 arms = 9 combinations |
Teal marks neural-domain parameters, bronze marks acoustic-domain parameters.