DSP / Audio Analytics Consultant (Gunshot/Impact/Vape Fusion) — Part-Time

3 weeks ago

New Delhi, India SafeSpace Global Full time

Location : Hyderabad, India About the engagement Our campuses include mics and vape sensors (bathrooms = audio/vape only, no video). We need an audio expert to deliverlow-latency acoustic anomalydetection (gunshot/impact/shout) and to define sensor-fusion timing with optical events. Time : 4–8 hrs/week (flex).Location : Remote. What you’ll do Select and adaptedge-friendly audio modelsfor gunshot/impact/shout (Apache-friendly where possible) and define thresholds per zone. Engineer robust preprocessing: resampling, VAD, log-mel/spec features, clipping/AGC handling, channel calibration. Define±Δt gatingvs. optical events; handle device offsets and publish evidence (onset time, spectral signature). If applicable, designmic-array/TDOAroadmap (future): array geometry, beamforming options, calibration SOP. Build an evaluation set (curated clips + confusers) and scorecards; tune for low false alarms. Must-have 5+ years DSP/audio ML (torchaudio/librosa), real-time classification on edge hardware. Model deployment experience (ONNX/TensorRT where relevant), streaming pipelines, latency profiling. Practical know-how with noisy environments (reverberation, HVAC, impulse sounds, crowd noise). Nice-to-have Experience with public audio model families (e.g., PANNs-style architectures) and license vetting. Mic placement, array processing (GCC-PHAT, beamforming), AEC/denoise familiarity. Timeseries analytics (onset/peak detectors) and event synchronization. Deliverables (first 4–6 weeks) Audio model + preprocessing config achieving target precision/recall on our clips; latency budget & CPU/GPU load report. Zone-wise threshold table, Δt gates, andprivacy policynotes (bathroom handling). Test suite + confusion matrix and a simple monitoring dashboard for false-alarm drift. Selection Criteria: ·Live/Whiteboard/IDE (90-120 min) around Acoustic event design, Thresholds & zone gating, Sensor fusion windowing, Mic placement & future TDOA and Edge deployment ·Take-Home (Next steps: If interested please email your cover letter and resume to Ashwin at ashwin.jaiswal@safespaceglobal.ai

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