# Kyoto2.org

Tricks and tips for everyone

# How many decibels is a teacher talking?

## How many decibels is a teacher talking?

If we consider that the teacher’s voice is usually between 50-50 dB, such high levels of background noise will make it impossible for the teacher to be heard unless they raise their voice to make up for the background noise (to about 78 dBA).

## How many decibels is too loud for a classroom?

In 50percent of the schools the average noise level measured was 70 dB. WHO recommends maximum noise levels of 35 dB in schools. As a rule of thumb, maximum noise levels of 45 dB is recommended outside buildings at night and 55 dB during the daytime. Noise levels between 60 and 65 dB are considered uncomfortable.

What is an appropriate noise level in a classroom?

35 decibels
According to the American National Standard on Classroom Acoustics, the noise level in empty classrooms should not exceed 35 decibels, or about the level of a whisper.

### What is the average signal to noise ratio in a classroom?

ANSI recommends that unoccupied classroom levels must not exceed 35 dBA, the signal-to-noise ratio (SNR) should be at least +15 dB, and reverberation time (RT) should not exceed 0.6-0.7 seconds (ANSI, 2010).

### How can you reduce sound in the classroom?

Some simple ways to make a classroom quieter include the following:

1. Place rugs or carpet in the room.
2. Hang curtains or blinds in the windows.
3. Hang soft materials such as felt or corkboard on the walls.
4. Place tables at an angle around the room instead of in rows.
5. Turn off noisy equipment when it is not in use.

How do I keep my classroom quiet?

15 creative & respectful ways to quiet a class

1. Sing a song. For the youngest students, use finger plays like the Itsy Bitsy Spider and Open, Shut Them.
2. Play a song.
3. Use a special sound.
4. Clap out a rhythm.
5. Get kids moving.
6. Do a countdown.
7. Try a hand signal.
8. Use sign language.

## What is noise measurement test?

Noise or sound level monitoring or measurement is a process to measure the magnitude of Noise in industries and residential area. Data collected from Noise level monitoring & Testing helps us to understand trends and action can be taken to reduce noise pollution.