Evaluate Acoustic Metrics

Select the correct Audio Toolbox function for acoustic measurement, apply proper calibration, and choose appropriate standards — instead of reimplementing algorithms or calling nonexistent functions.

When to Use

• Computing psychoacoustic metrics (loudness, sharpness, roughness, fluctuation)
• Evaluating speech quality or intelligibility (ViSQOL, STOI, STI, SII)
• Assessing noise compliance (NC rating, RC rating, RNC, SIL)
• Measuring SPL from recordings (offline, calibrated)
• Computing broadcast loudness (EBU R 128 / LUFS)
• Measuring reverberation time (RT60) from impulse responses
• Detecting tonal content (tone-to-noise ratio, prominence ratio)
• Converting microphone sensitivity to CalibrationFactor
• User mentions PESQ or POLQA (redirect to correct alternatives)

When NOT to Use