PURPOSE: To measure the noise level of an optical sensor without a troublesome work by covering only a light path to a light-reception part with a black light path cover part for the light-reception part, and keeping the major part of the light from the light source away from the light-...
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Measuring noise levels in the workplace involves using a sound level meter, a device designed to quantify the intensity of sound. The process typically begins by selecting a suitable sound level meter and calibrating it to ensure accuracy. Measurement locations are then chosen, considering areas nea...
NOISE-MEASURING DEVICE FOR DUCT AND ITS METHOD 来自 百度文库 喜欢 0 阅读量: 23 申请(专利)号: JP特願平11-33366 申请日期: 19990210 公开/公告号: JP特開2000-230855(P2000-230855A)A 公开/公告日期: 20000822 申请(专利权)人: KAWASAKI HEAVY IND LTD 川崎重工業株式会社 发明人:...
Method and circuit arrangement for measuring speech level in a speech processing system The speech level measurement is particularly important for a successful echo compensation in telecommunications systems, for a noise suppression in a, for example, in offset, or in the speech recognition and in sa...
In this project we will use a normal Electret Condenser microphone with Arduino and try measuring the sound or pollution level in dB as close as possible to the actual value.
device's auto power off feature, adjustable between 1-9min, ensures energy efficiency and prolongs battery life. **Durable and Portable Design** Crafted for durability and portability, the Digital Wireless Sound Noise Level Meter Tester is encased in a shock-absorbent carrying case, making it ...
Device for measuring a signal having a very high noise level by an integrator circuit having an operational amplifier, characterized in that the device comprises a means for memorizing a voltage representative of the charge of the capacitor of the integrator circuit, a means for switching the volta...
;CONSTITUTION: A noise/vibration measuring and monitoring device is configured as simulation of a giraffe, being composed of a trunk 1, neck 2, head 3, and legs 4. Signals from a microphone 8 in the head 3 and a pickup on the ground are entered into a noise meter and vibration meter...
Effective Perceived Noise Level (EPNdB) • Speech Interference Level (SIL) Measuring methods have proliferated because the physical phenomenon, a pressure wave, is related to a physiological human response (hearing) and then to a psychological response (pleasure or irritation). Along the way, the...