CSCD 4301 Study Guide - Midterm Guide: Book Of Ezekiel, Mastoid Part Of The Temporal Bone, Phonetics

• School: Temple University
• Department: Communication Sciences and Disorders
• Course: CSCD 4301
• Professor: Mancano

Document Summary

Decibels reference for db il, spl, hl, sl. Normal hearing sensitivity: 10^12 w/m^2 (in mks) or 10 ^16 w/m^2. Db spl: standard reference level: 20 (log po/20 pa) Pascal = measure of force: 20 (log po/ . 0002 dynes/cm^2) Db il to spl: db il = 10 x log10. Inverse square law: decrease in a sound"s intensity with distance. Waveform(cid:9) (cid:9) e d u t i l p m. Number of cycles that occur in one second. Peak amplitude: from baseline to one of the peaks. Peak to peak: from most positive to most negative. Rms: avg amplitude of a waveform integrated over a period of time. Frequency range for normal hearing sensitivity: humans: 20 hz to 20 khz, below 20 hz, we feel a vibration rather than hear a sound, most people have very diminished sensitivity for frequencies > 8000-10, 000. Indicates the minimum average sound pressure levels by frequency for a group of people with normal hearing.