![](/images/iacf1.jpg)
Julian Treasure- Sound Consultant, 2012
"If education can be likened to watering a garden, which is a fair metaphor, sadly, much of the water is evaporating before it reaches the flowers, especially for some groups, for example, those with hearing impairment."
![Julian Treasure- Sound Consultant, 2012](/images/iacf1.jpg)
![Julian Treasure- Sound Consultant, 2012](/images/iacf1.jpg)
Julian Treasure- Sound Consultant, 2012
"If you can hear me, you can understand me without seeing me. If you can see me without hearing me, that does not work"
![Julian Treasure- Sound Consultant, 2012](/images/iacf2.jpg)
![Julian Treasure- Sound Consultant, 2012](/images/iacf2.jpg)
Nabelek and Nabelek, 1985
"Speech produced in one place in a room should be clear and intelligible everywhere in the room"
![Nabelek and Nabelek, 1985](/images/iacf3.jpg)
![Nabelek and Nabelek, 1985](/images/iacf3.jpg)
Accredited Standards Committee, 2002
"Reverberation times should not exceed 0.4 seconds in classroom primarily used by hearing disabled students or 0.6 seconds in general classrooms"
![Accredited Standards Committee, 2002](/images/iacf1.jpg)
![Accredited Standards Committee, 2002](/images/iacf1.jpg)
Haines, Stansfeld, Job, Berglund, & Head, 2001
"Excessive noise in schools has a negative impact on student learning and performance"
![Haines, Stansfeld, Job, Berglund, & Head, 2001](/images/iacf2.jpg)
![Haines, Stansfeld, Job, Berglund, & Head, 2001](/images/iacf2.jpg)
Committee to Review, 2006
"Teachers speaking in noisy classrooms may be at risk for voice impairment"
![Committee to Review, 2006](/images/iacf1.jpg)
![Committee to Review, 2006](/images/iacf1.jpg)
Tiesler & Oberdöster, 2008
"Loud or reverberant classrooms may cause teachers to raise their voices, leading to increased teacher stress and fatigue"
![Tiesler & Oberdöster, 2008](/images/iacf2.jpg)
![Tiesler & Oberdöster, 2008](/images/iacf2.jpg)