auktoriteetti yhteiskunta suola equal loudness peto lähestyä Kaupunki
等ラウドネス曲線 - Wikipedia
Equal-loudness-level contour with rePhase | diyAudio
Loudness - an overview | ScienceDirect Topics
Equal-loudness contour - Wikipedia
Linux Studio Plugins Project
Prediction of absolute thresholds and equal-loudness contours using a modified loudness model: The Journal of the Acoustical Society of America: Vol 120, No 2
Doctor ProAudio.com (el DoPA)
File:Equal loudness no caption.svg - Wikimedia Commons