Peter is not stupid

– he just can’t hear nor understand what the teacher is saying

1) “Speech Intelligibility in Classrooms” research project conducted by The Department of Building Engineering & Surveying of Herriot-Watt University in Edinburgh
2)Danish National Research Center for Working Environment: “Noise from human activity”
3)Julian Treasure, Sound Business, 2007
4)Source: Health Technical Memorandum 08-01: Acoustics