Relative by default
Uncalibrated levels are dBFS relative to digital full scale. A visual display offset cannot convert dBFS into physical sound pressure.
Measurement and use limitations
Know what the result means before relying on it.
Apple’s Standard Licensed Application EULA applies. These product-specific notes explain the scientific and media-use boundary; they are not a claim of certification.
Calibration is evidence-gated
Derived dB SPL appears only while user-provided reference evidence matches the actual input route, sample format, channel policy, and validity period. Mismatch or expiration falls back to dBFS.
Not a certified instrument
AcoustoViz is not an IEC 61672 Class 1/2 certified meter, legal metrology, a medical device, hearing-protection advice, or an occupational, environmental, safety, or regulatory determination.
Accuracy depends on the chain
Results depend on device hardware, microphone/interface, acoustic field, reference source, environment, settings, and user procedure. Use qualified equipment and expertise when consequences matter.
Media, consent, and sharing
You are responsible for permission to record, import, analyze, export, and share media and for applicable copyright, privacy, consent, workplace, and local recording laws. AcoustoViz never chooses a recipient. A third-party destination’s terms apply after you select it.
Safety
Do not rely on AcoustoViz alone for hazardous-environment, legal, medical, hearing-conservation, or compliance decisions. Preserve original media and calibration evidence when traceability matters.