The body speaks in waves.
A health-tech blog by Chinmay Bhagat.
AntarSpand explains complex healthcare sensing, sleep science, biosignals, and monitoring systems in a clear, engineering-grounded way.
What your body is telling you
Latest writing
Listening to Women's Health
For most of a woman's life, the signals that matter most to her health move too slowly for a doctor's visit and too quickly for an annual panel. Wearables sit in the middle — and that is where the interesting data lives.
AI / MLKnowledge distillation: teaching a BCG model with ECG labels
When your teacher model is 85% accurate and your student input is noisier, you use that gap intentionally.
Sensor HardwarePVDF vs capacitive: which sensor survives a restless sleeper?
Two sensor modalities, one hostile environment. After six months of field testing, here is what actually breaks.
HealthTechThe engineering stack behind contactless vitals: from PVDF film to sleep stage
Sensor physics, ADC design, embedded firmware, cloud DSP, and the ML inference layer that ties it together.
HealthTechBLE for overnight ECG: what the spec sheets don't tell you
Bluetooth Low Energy looks ideal for overnight biosignal recording. The spec sheet omits the parts that will break your study.
Deep LearningTransformers for biosignals: what the hype gets right (and wrong)
Attention mechanisms are genuinely useful for long-context physiological signals. The implementation details are where most papers quietly fail.
BCGBuilding a Signal Quality Index from scratch
An SQI is the immune system of your BCG pipeline. Here is how to build one that actually rejects bad data without being paranoid.
BCGSnoring detection from BCG: separating breath from ballistic noise
Snoring produces a characteristic vibration signature in BCG. Isolating it from cardiac and respiratory signals requires understanding all three simultaneously.