Decibel Sondex: dB sound meter

Sondex measures the noise around you — and shows exactly what it means for how you feel. Why does the noise around you matter? We sit in noisy cafes, work in open-plan offices, walk along busy streets — and rarely think about how all of this affects us. Constant background noise drains your energy, kills concentration, and over time, subtly impacts your well-being. Sondex helps you understand the sound environment around you — so you can make better decisions about where you spend your time. FOR EVERYONE — Simple and instant Open Sondex anywhere and see in real time how loud your surroundings are. No settings. No complex parameters. What you get:

• Live decibel indicator — always updating, always accurate
• Average, minimum, and peak noise levels for any session
• Noise threshold alerts when sound levels cross your personal comfort limit
• Session saving to compare your favorite places over time
• Export detailed PDF reports for any recorded session
• Human health impact analysis based on recorded noise levels Use it to:
• Find the quietest table at a café before you sit down
• Check if your home office is truly quiet enough for work
• Know when noise at the gym or a concert becomes excessive
• Monitor noise levels outdoors or in your yard You don't need to know anything about acoustics. Just open the app — and the answer is right in front of you. PRO — Deep analysis for serious users. Sondex is also a full-featured acoustic measurement tool — built for those who need more than just a number on a screen. Exposure Dose and TWA (Time-Weighted Average) Tracks how much noise you've been exposed to over an entire session. Calculates your time-weighted average level and predicts what a full 8-hour workday would look like for your ears. Based on international NIOSH and OSHA safety standards — the same criteria used by occupational safety professionals worldwide. Octave Band Analyzer Real-time frequency breakdown across 10 octave bands. Don't just find out how loud it is — understand what's creating the noise. Low-frequency hum from machinery? High-frequency whistle from ventilation? Mid-frequency conversational chatter? Sondex shows it all. Session Recording and Waveform Record any environment and analyze it later. Scroll through the full audio waveform, zoom in on individual moments, and see exactly when noise levels spiked. Source Timeline Switch between the built-in microphone, Bluetooth devices, or external microphones during a session. Sondex logs which source was active at each moment — displayed as a clean interactive timeline. PDF Reports Every session can be exported as a detailed PDF report, including all measured parameters, location data, device information, time-based breakdowns, and automated recommendations. Microphone Calibration Manual or automatic offset correction. When measurement accuracy matters, you have full control. Microphone Health Assessment Sondex analyzes your microphone's performance during each session — detecting clipping, wind noise, self-noise levels, and frequency anomalies. Each session receives a health score from 0 to 100.

Sondex is not a medical application and does not provide medical diagnoses or health advice.

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