騒音計、スペクトラム分析、カメラオーバーレイ
デシベルメーター
リアルタイム音圧解析・ノイズ検出
リアルタイムで精密な騒音レベル測定。信頼できるdB表示。
スタジオ、イベント、教室、作業場、建設現場、日常の騒音チェックに。
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dB SPL
適度
Realtime measurement
Readable dB values without a cluttered cockpit.
Decibel Meter uses iOS measurement mode, spectrum analysis and stable smoothing to keep current, minimum, maximum and average values easy to read while the sound changes around you.
Multiple dB modes
Measure in dB SPL, dB(A) or dB(C) depending on whether you need raw level, human-weighted loudness or low-frequency-aware readings.
Live spectrum
A realtime frequency view helps identify whether noise comes from bass, machinery, speech, traffic or high-frequency sources.
Reference categories
Color-coded loudness ranges help you interpret measured levels quickly, from quiet rooms to dangerous noise.
Documentation
Turn a moment of noise into a useful record.
Save measurements with history, audio, photo or video context. When a reading matters later, the app keeps more than just one number.
Data, audio, photo and video
Record measurement data alone or capture sound, images and camera video with a live dB overlay.
History and details
Review average, min and max values, device info, microphone, calibration offset and measurement settings.
Location and notes
Add context for documented measurements when you need to remember where and why a reading was taken.
Pro workflow
Built for real checks, not just a novelty number.
Use the app for music, environmental noise, studio monitoring, events, education, workshops, construction sites and everyday questions about loudness.
Calibration
Adjust measured levels against a known reference so readings can match your measurement setup more closely.
Saved overview
Browse compact, extended and map-based views, mark favorites and manage multiple measurements.
Export
Create PDF or CSV exports when measurements need to move into reports, logs or customer communication.
FAQ
Useful answers before you measure.
Which measurement types are supported?
The app supports dB SPL, dB(A) and dB(C) measurement modes.
Can I record video with the measurement?
Yes. Camera mode can record photos or videos with live dB overlay information.
Can I export measurements?
Yes. PDF and CSV export are available as Pro features.
Can a phone replace certified equipment?
No phone app should be treated as a certified class sound level meter. Decibel Meter is useful for practical checks, documentation and relative analysis, but legal or safety-critical measurements require certified hardware.
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