Acoustic contributions and characteristics of floor treatments for elementary school classroom background noise levels

2012 ◽  
Vol 132 (3) ◽  
pp. 2072-2072
Author(s):  
Robert Celmer ◽  
Clothilde Giacomoni ◽  
Alex Hornecker ◽  
Ari M. Lesser ◽  
Adam P. Wells ◽  
...  
Keyword(s):  
Elementary School ◽  
Background Noise ◽  
Noise Levels ◽  
School Classroom

Contribution of non‐verbal and non‐ventilation noise sources to background noise levels in elementary school classrooms.

2011 ◽  
Vol 129 (4) ◽  
pp. 2523-2523
Author(s):  
Alex Hornecker ◽  
Clothilde Giacomoni ◽  
Michelle C. Vigeant ◽  
Robert D. Celmer
Keyword(s):  
Elementary School ◽  
Background Noise ◽  
Noise Levels ◽  
Noise Sources

Dessert Dilemma

2013 ◽  
Vol 20 (1) ◽  
pp. 8-10
Author(s):  
Erin R. Moss
Keyword(s):  
Elementary School ◽  
School Classroom ◽  
Good Problem

A good problem can capture students' curiosity and can serve many functions in the elementary school classroom: to introduce specific concepts the teacher can build on once students recognize the need for additional mathematics or to help students see where to apply already-learned concepts. We encourage teachers to use the monthly problem in their own classrooms and report solutions, strategies, reflections, and misconceptions to the journal audience.

The Canterbury Child's Aid: A Binaural Spatial Sensor for Research with Blind Children

1979 ◽  
Vol 73 (5) ◽  
pp. 179-184
Author(s):  
E. R. Strelow ◽  
J. T. Boys
Keyword(s):  
Future Development ◽  
Background Noise ◽  
Field Of View ◽  
Basic Operation ◽  
Noise Levels ◽  
Design Features ◽  
Blind Children ◽  
Automatic Level

A binaural sensory aid for research with blind children is described along with the rationale for its design features. The basic operation of this form of aid is described in detail with particular reference to those features that control the sensing parameters of range, direction and field of view. A novel automatic level controller which ensures that device sounds remain audible but not excessively loud, in spite of changes in background noise levels, is also described. The likely future development of these forms of sonic aids is discussed.

scholarly journals Background noise analysis in urban airport surroundings of Brazilian cities, Congonhas Airport, São Paulo

2016 ◽  
Vol 50 (0) ◽  
Author(s):  
Fabio Scatolini ◽  
Cláudio Jorge Pinto Alves
Keyword(s):  
Traffic Control ◽  
Background Noise ◽  
Noise Analysis ◽  
Exposure Level ◽  
Noise Levels ◽  
Sound Exposure ◽  
Operational Characteristics ◽  
Data Compilation ◽  
Noise Measurements ◽  
Noise Data

ABSTRACT OBJECTIVE To perform a quantitative analysis of the background noise at Congonhas Airport surroundings based on large sampling and measurements with no interruption. METHODS Measuring sites were chosen from 62 and 72 DNL (day-night-level) noise contours, in urban sites compatible with residential use. Fifteen sites were monitored for at least 168 hours without interruption or seven consecutive days. Data compilation was based on cross-reference between noise measurements and air traffic control records, and results were validated by airport meteorological reports. Preliminary diagnoses were established using the standard NBR-13368. Background noise values were calculated based on the Sound Exposure Level (SEL). Statistic parameters were calculated in one-hour intervals. RESULTS Only four of the fifteen sites assessed presented aircraft operations as a clear cause for the noise annoyance. Even so, it is possible to detect background noise levels above regulation limits during periods of low airport activity or when it closes at night. CONCLUSIONS All the sites monitored showed background noise levels above regulation limits between 7:00 and 21:00. In the intervals between 6:00-6:59 and 21:00-22:59 the noise data, when analyzed with the current airport operational characteristics, still allow the development of additional mitigating measures.

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