Monday, June 7, 2010

Classroom Acoustics affects Students With APD

An inexpensive low fidelity 3.5 inch speaker, ...Image via Wikipedia
Performance in school is very dependent on hearing.  Students with Auditory Processing Disorder often don't hear everything in class and, as a result, have lower grades or behavior problems.

Four factors can impact how well a student with Auditory Processing Disorder (APD) can hear the teacher:
  • The Teacher's Voice
    • The Teachers voice needs to be 15 to 20 decibels louder than the background noise.  Many times a teacher's voice is only at the level of ambient noise.
  • Ambient Noise in the Room
    • Ambient noise mask critical speech signals, particularly the consonants, contributing to spoken language misperception. 
    • Classrooms are highly reverberant because of the hard and reflective surfaces of the walls, floors, and ceilings
  • The Distance between the Teacher and the Students
    •  In a standard classroom, the best accoustics are in the yellow field in the diagram to the right.  In a Soundfields, (a type of speaker system) enhanced classroom, accoustics are good throughout the room..
    • Distance between a teacher and the student greatly impacts the student's ability to hear

Max Note 4

Bookmark and Share
Reblog this post [with Zemanta]