Acoustics+Vocabulary

//__Concepts __//  **Sound pressure level:** The pressure variations caused by sound waves in air.  **Sound strength:** is a single-figure value used to describe the total sound strength for all frequencies in a way similar to the sensitivity of the ear.  **Speech intelligibility:** Speech intelligibility is directly dependent on the level of background noise, reverberation time and the shape of the room. **Acustic:** is the term for the study of sound and how sound is experienced. **Articulation Class:** A classification of suspended ceilings according to their ability to contribute to the acoustic privacy between work stations.The Articulation Class (AC) can be calculated from the interzone attenuation. A high Articulation Class gives some privacy, a lower Articulation Class means lower privacy. **Articulation Loss of CONSonants:** One method of objectively measuring speech intelligibility is Articulation Loss of CONSonants, showing the number of consonants being missed as a percentage. Consonants play a much more significant role in speech intelligibility than vowels.