This paper involves utilizing an Arduino Uno as the primary hardware to measure sound level in a library. The amount of noise region is measured using sensor. sensor signals are amplified operational amplifier function integrated circuit LM 567. There two types output available: audio and visual. takes form personalized message that played over speakers. LEDs employed offer visual feedback, wit...

Sound is one element of the vibration an object whare occurs around air that propagates from all directions results vary form pressure applies to surface eardrum heard, Motorcycles are vehicles ofthen used as transportation with this make it easier for users and sound produced exhaust a noise often heard on highway there based these problems, authors design miniature system measuring standard e...

In this paper the role of object identification in sanification system for Navigation Assistance Visually Impaired (NAVI) is discussed. The developed system includes Single Board Processing System (SBPS), vision sensor mounted headgear and stereo earphones. The vision sensor captures the vision information in front of blind user. The captured image is processed to identify the object in the ima...

Currently, imaging methods are used to diagnose loosening of endoprosthetic implants, but fail to achieve 100% accuracy. In this study, a passive sensor array which is based on the interaction between magnetic oscillators inside the implant and an excitation coil outside the patient was investigated. The excited oscillators produce sound in the audible range, which varies according to the exten...

Phonocardiography is a widely used method of listening to the heart sounds and indicating the presence of cardiac abnormalities. Each heart cycle consists of two major sounds - S1 and S2 - that can be used to determine the heart rate. The conventional method of acoustic signal acquisition involves placing the sound sensor at the chest where this sound is most audible. Presented is a novel algor...

In this paper, we propose a method for detecting the location of the speaker that is a target of automatic video filming in distance learning and lecture archive. It is required that a face of a speaking student is filmed in a lecture video. For this purpose, it is necessary to detect the location of a speaker. An acoustic sensor such as a microphone array is used widely to detect the location ...

Considerable interest has been devoted to converting mechanical energy into electricity using polymer nanofibres. In particular, piezoelectric nanofibres produced by electrospinning have shown remarkable mechanical energy-to-electricity conversion ability. However, there is little data for the acoustic-to-electric conversion of electrospun nanofibres. Here we show that electrospun piezoelectric...

This research addresses sensor-based tracking problems for autonomous cleaning mobile robot in a networked sensor space. To solve the problem, the difference among the traveling times of the sound source to each of three microphones has been used to calculate the distance and orientation of the sound source from the cleaning mobile robot, which carries the microphone array. The cross-correlatio...