Hidacs is a Swiss R&D consultancy specializing in audio signal processing and machine learning. We help R&D teams turn acoustic and audio challenges into working prototypes — feasibility studies, proof-of-concept, and production audio ML systems across speech, industrial, environmental, and health & safety domains.

Where is Hidacs based?

Hidacs Sàrl is based in Lausanne, Switzerland. We work with R&D teams across Switzerland, the European Union, and North America.

How does an engagement with Hidacs typically start?

Engagements start with a free 30–45 minute exploratory call to discuss your technical hypothesis and R&D goals. From there, we typically run a short, deliverable-based pilot project to validate feasibility, with optional ongoing collaboration via monthly retainer.

Hidacs was founded by Patrick Marmaroli, who holds a PhD in audio signal processing from EPFL and has 15 years of production experience shipping audio ML systems, including at Microsoft.

Tools | Hidacs Sàrl

Tools

Discover our specialized tools designed to help you with specific tasks

Audio DSP

Real-time freq. responseMultiple filter windowsC header exportWASM-accelerated

Digital Audio Filter Designer

Interactive FIR filter design tool for embedded systems. Upload audio, tune parameters, and export coefficients ready for Cortex-M/DSP deployment.

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Machine Learning

Research-based scoringArchitecture rankingPerformance benchmarksAzure AI integration

ML Audio Architecture Assistant

Get AI-powered recommendations for machine learning audio architectures based on your specific requirements and research-backed best practices.

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Acoustics & Law

Swiss law expertiseCompliance guidanceRegulatory analysisLegal best practices

Swiss Noise Law Assistant

Navigate Swiss noise regulations with expert guidance on compliance, legal requirements, and best practices for acoustic projects.

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Research

7-section reportBenchmarks & timelinesPDF / TXT / JSON exportEN / FR

SOTA Survey Generator

Generate comprehensive state-of-the-art research surveys with AI. Answer a few questions about your domain and get a structured, exportable report.

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Logistics

K-means clusteringInteractive mapPDF exportField dispatching

GeoKluster

Automatically group construction site addresses by geographic proximity. Paste Google Maps links, assign teams, and export a PDF report.

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IT Governance

12 issue categoriesStep-by-step fixesPowerShell scriptsInteractive checklist

SharePoint Remediation Guide

Interactive step-by-step guide to diagnose and fix SharePoint governance gaps. Covers deletion control, versioning, permissions, metadata, sharing policies, and more.

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Audio DSP

Real-time conversionSensitivity offsetReference tableClipping warnings

dB SPL ↔ dBFS Converter

Convert between dB SPL (Sound Pressure Level) and dBFS (digital full scale). Includes microphone sensitivity correction. Reference table for common recording scenarios.

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Education

Audio/video recordingShare by linkTimestamped annotationsZero sign-up

QariQuest

Web platform for sharing audio/video recordings between students and teachers, with no account or installation required. Timestamped annotations (emoji, text, or audio) for in-context feedback.

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Speech Therapy

Clinical voice analysisReal-time spectrogramsAI therapy plans30+ languages

Vocametrix

Clinical voice analysis and speech therapy platform. Real-time visualizations (spectrograms, waveforms), AI agents for personalized therapy plans, and interactive voice-controlled games.

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Document Management

Draw/type/image signatureEmail invitationAudit trailTracking dashboard

RBE eSign

Electronic signature platform: upload a PDF, add signatories, place signature zones, and collect digital signatures via email invitation links. Tracking dashboard and signed PDFs with audit trail.

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Health & Productivity

Webcam posture detectionSquat counterDo Not Disturb modeOpen source

SquatLock

Windows app that periodically locks your screen and requires webcam-detected squats to unlock it. Posture detection via MediaPipe with a "Do Not Disturb" mode for meetings.

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Audio DSP

FFT cross-correlationStereo WAV analysisCSV exportOpen source

GCC-PHAT

Command-line tool implementing the GCC-PHAT (Generalized Cross-Correlation Phase Transform) algorithm to measure time delays between stereo audio channels. FFT-based WAV processing with CSV export.

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Audio DSP

Windows Explorer integrationSpectrograms & waveformsSpeech transcriptionOpen source

AudioTooltip

Windows app that adds detailed audio analysis to the File Explorer context menu. Displays metadata, waveforms, spectrograms, and speech transcriptions (Azure Speech Services) with a right-click.

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Games & Events

5-step creationPrintable PDFsVirtual test modeFR / EN / ES

Treasure Hunt Designer

Web app to create custom treasure hunts in 5 steps: riddles, locations, per-participant routes, and printable PDF generation. Includes a virtual test mode and JSON import/export.

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