Naneedigital
- How do I calibrate my sound meter Android app?
- Is there an app to measure noise levels?
- Are phone app decibel meters accurate?
- What is the best dB Meter app?
- How can I measure dB?
- How quiet is 40 dB?
- What dB level is considered safe?
- What is the acceptable noise level in a residential area?
- What is 50 decibels sound like?
- How loud is 140 decibels?
How do I calibrate my sound meter Android app?
Calibrating Your Device
- Get something with a speaker. ...
- Put the 2 devices at the same distance of the speaker, with the microphones facing the speaker. ...
- Play the calibration tone and adjust the volume so the Sound Level Meter or the calibrated phone say that the level is between 60-70 dB to use as reference.
Is there an app to measure noise levels?
Decibel. This sound level meter application for the Android market is a simple tool that uses the smart phone's microphone to measure Sound Pressure Level (SPL).
Are phone app decibel meters accurate?
A new study provides the answer. The answer is, “Yes,” but only four apps that were tested measure up. The National Institute for Occupational Safety and Health (NIOSH) evaluated the apps at its acoustic testing lab. The tests also compared results for i-Phones and Android phones.
What is the best dB Meter app?
Apps for both Android and iOS
- Decibel X. iTunes rating: 4.6 stars, free, offers in-app purchases. Google Play rating: 4 stars, $3.99. ...
- SPL Meter. iTunes rating: 4.3 stars, $.99, offers in-app purchases. Google Play rating: 4.6 stars, free. ...
- Too Noisy Pro. iTunes rating: 4 stars, $4.99.
How can I measure dB?
When you measure noise levels with a sound level meter, you measure the intensity of noise called decibel units (dB). A sound meter uses a display with a decibel range and resolution to approximate to the ear's dynamic range, usually the upper range rather than the quiet part.
How quiet is 40 dB?
Topic Overview
| Noise | Average decibels (dB) |
|---|---|
| Leaves rustling, soft music, whisper | 30 |
| Average home noise | 40 |
| Normal conversation, background music | 60 |
| Office noise, inside car at 60 mph | 70 |
What dB level is considered safe?
Sounds at or below 70 dBA are generally considered safe. Any sound at or above 85 dBA is more likely to damage your hearing over time. Researchers have found that people who are exposed over long periods of time to noise levels at 85 dBA or higher are at a much greater risk for hearing loss.
What is the acceptable noise level in a residential area?
In dwellings, the critical effects of noise are on sleep, annoyance and speech interference. To avoid sleep disturbance, indoor guideline values for bedrooms are 30 dB LAeq for continuous noise and 45 dB LAmax for single sound events. Lower levels may be annoying, depending on the nature of the noise source.
What is 50 decibels sound like?
| Noise Source | Decibel Level | comment |
|---|---|---|
| Quiet suburb, conversation at home. Large electrical transformers at 100 ft | 50 | One-fourth as loud as 70 dB. |
| Library, bird calls (44 dB); lowest limit of urban ambient sound | 40 | One-eighth as loud as 70 dB. |
| Quiet rural area | 30 | One-sixteenth as loud as 70 dB. Very Quiet |
| Whisper, rustling leaves | 20 |
How loud is 140 decibels?
Comparative Examples of Noise Levels
| Noise Source | Decibel Level | Decibel Effect |
|---|---|---|
| Aircraft carrier deck | 140 | |
| Military jet aircraft take-off from aircraft carrier with afterburner at 50 ft (130 dB). | 130 | |
| Thunderclap, chain saw. Oxygen torch (121 dB). | 120 | Painful. 32 times as loud as 70 dB. |
