Biomedical Engineering 403

Introduction to Psychophysical Experimentation

Please be familiar with the following concepts:

• Sound intensity discrimination in its dynamic range (Roughly 10 dB to 120 dB)
• General note for the exam: if your answer is far above this range, you probably have the wrong answer. A sound pressure level (SPL) on the order of 5000 dB would probably destroy Los Angeles.
• ULL (Uncomfortably Loud Level, around 120 dB)
• Weber's Law
• Weber's Fraction
• Phon (this is a perceived level of loudness. e.g., 40 phons = a sound at a given frequency perceived to be as loud as a 1 KHz tone at 40 dB. Some other guy might perceive the exact same sound to be louder or softer).
• Equal-loudness contour map
• Sone (another subjective scale. This is more arbitrary. If a given sound is assigned a value of 1 sone, then a sound that is perceived to be twice as loud would be given a value of 2 sones.)
• Stephen's Loudness Funciton

No!
Please don't make me go to any of those pages!
I want to go somewhere completely different!