Decibel Core: SPL & Dosimeter
In-app purchases
100+
Downloads
Everyone
info
About this app
Occupational Noise Screening & Acoustic Analysis.
Decibel Core is a comprehensive Noise Screening Tool. Designed for safety officers, industrial hygienists, and audio engineers, Decibel Core combines a real-time SPL meter with a NIOSH/OSHA compliant noise dosimeter calculator.
Generate PDF reports, track Time-Weighted Average (TWA), and analyze frequency spectrums for initial noise assessments.
NOISE DOSIMETRY SCREENING
Turn your phone into a safety awareness tool. Monitor noise risk and screen workplace noise levels.
• NIOSH & OSHA Standards: Calculates dose based on NIOSH (85dB/3dB exchange) and OSHA (90dB/5dB exchange) formulas.
• TWA & Dose %: View real-time noise dose percentages and projected 8-hour exposure.
• Risk Thresholds: Visual alerts for Safe (<85dB), Caution (85-94dB), and Danger (>=105dB) zones.
REPORTING & LOGGING
Ideal for preliminary workplace assessments and environmental monitoring.
• PDF Export: Generate detailed TWA reports with graphs and session statistics.
• Data Logging: Record measurements with timestamps and export to CSV.
• Leq Tracking: Monitor Equivalent Continuous Level (Leq) for fluctuating noise sources.
REAL-TIME FFT ANALYSIS
Identify frequency peaks in noise sources.
• Frequency Analysis: 2048-point FFT with Hamming window.
• Weighting Filters: Support for A-Weighting, C-Weighting, and Z-Weighting.
MICROPHONE CALIBRATION
Smartphone microphones vary by manufacturer. Decibel Core includes a Multi-Point Calibration engine to help align your device with reference equipment.
• Linear Regression: Adjusts slope and offset for better alignment.
• Adaptive Presets: Quick settings for common microphone profiles.
IMPORTANT: HARDWARE LIMITATIONS
Please Read Before Downloading:
Decibel Core is a software tool, but it is limited by the physical hardware of your smartphone's microphone.
1. Hardware Clipping: Most smartphone microphones physically stop measuring (clip) above 90dB - 105dB. This is a hardware limit, not a software error. This app cannot measure sounds louder than your device's hardware allows.
2. Voice Optimization: Phone microphones are tuned for human voice frequencies. They may not be accurate for very low bass or very high frequency industrial noise.
3. Screening Use Only: This app is intended for screening (identifying potential issues) and educational use.
TECHNICAL SPECS
• Calculations: Based on IEC 61672-1 weighting and NIOSH/OSHA dose formulas.
• Audio Engine: 44.1 kHz 16-bit PCM input.
DISCLAIMER
This application is for informational and screening purposes only.
• Not a Class 1 Device: This software is NOT a substitute for a calibrated ANSI/IEC Class 1 Sound Level Meter for official regulatory, legal, or occupational safety compliance.
• Accuracy: Without external calibration, smartphone readings may vary significantly from professional equipment.
• Liability: The developer assumes no responsibility for decisions made or hearing damage sustained based on this data. Always verify critical measurements with certified equipment.
Decibel Core is a comprehensive Noise Screening Tool. Designed for safety officers, industrial hygienists, and audio engineers, Decibel Core combines a real-time SPL meter with a NIOSH/OSHA compliant noise dosimeter calculator.
Generate PDF reports, track Time-Weighted Average (TWA), and analyze frequency spectrums for initial noise assessments.
NOISE DOSIMETRY SCREENING
Turn your phone into a safety awareness tool. Monitor noise risk and screen workplace noise levels.
• NIOSH & OSHA Standards: Calculates dose based on NIOSH (85dB/3dB exchange) and OSHA (90dB/5dB exchange) formulas.
• TWA & Dose %: View real-time noise dose percentages and projected 8-hour exposure.
• Risk Thresholds: Visual alerts for Safe (<85dB), Caution (85-94dB), and Danger (>=105dB) zones.
REPORTING & LOGGING
Ideal for preliminary workplace assessments and environmental monitoring.
• PDF Export: Generate detailed TWA reports with graphs and session statistics.
• Data Logging: Record measurements with timestamps and export to CSV.
• Leq Tracking: Monitor Equivalent Continuous Level (Leq) for fluctuating noise sources.
REAL-TIME FFT ANALYSIS
Identify frequency peaks in noise sources.
• Frequency Analysis: 2048-point FFT with Hamming window.
• Weighting Filters: Support for A-Weighting, C-Weighting, and Z-Weighting.
MICROPHONE CALIBRATION
Smartphone microphones vary by manufacturer. Decibel Core includes a Multi-Point Calibration engine to help align your device with reference equipment.
• Linear Regression: Adjusts slope and offset for better alignment.
• Adaptive Presets: Quick settings for common microphone profiles.
IMPORTANT: HARDWARE LIMITATIONS
Please Read Before Downloading:
Decibel Core is a software tool, but it is limited by the physical hardware of your smartphone's microphone.
1. Hardware Clipping: Most smartphone microphones physically stop measuring (clip) above 90dB - 105dB. This is a hardware limit, not a software error. This app cannot measure sounds louder than your device's hardware allows.
2. Voice Optimization: Phone microphones are tuned for human voice frequencies. They may not be accurate for very low bass or very high frequency industrial noise.
3. Screening Use Only: This app is intended for screening (identifying potential issues) and educational use.
TECHNICAL SPECS
• Calculations: Based on IEC 61672-1 weighting and NIOSH/OSHA dose formulas.
• Audio Engine: 44.1 kHz 16-bit PCM input.
DISCLAIMER
This application is for informational and screening purposes only.
• Not a Class 1 Device: This software is NOT a substitute for a calibrated ANSI/IEC Class 1 Sound Level Meter for official regulatory, legal, or occupational safety compliance.
• Accuracy: Without external calibration, smartphone readings may vary significantly from professional equipment.
• Liability: The developer assumes no responsibility for decisions made or hearing damage sustained based on this data. Always verify critical measurements with certified equipment.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
Fixed older devices memory issues.
App support
About the developer
Sebastian Kubiak
sebastian.qbiak@gmail.com
Średnia 64
71-812 Szczecin
Poland
