Results 11 to 20 of about 52,178 (320)

THERMOACOUSTIC REFRIGERATOR SYSTEM PERFORMANCE USING THE PVC (POLYVINYL CHLORIDE) STACK BY POWER INPUT VARIATION [PDF]

Jurnal Neutrino: Jurnal Fisika dan Aplikasinya, 2017
The thermoacoustic refrigerator is an innovative alternative and did not use substances that had a negative impact on the environment such as freon, but using air as the working substance.
Indah Kharismawati
doaj   +5 more sources

AudioUnlock: Device-to-Device Authentication via Acoustic Signatures and One-Class Classifiers [PDF]

Sensors
Acoustic fingerprints can be used for device-to-device authentication due to manufacturing-induced variations in microphones and speakers. However, previous works have focused mostly on recognizing single devices from a set of multiple devices, which may
Alfred Anistoroaei, Patricia Iosif, Camelia Burlacu, Adriana Berdich, Bogdan Groza   +4 more
doaj   +2 more sources

Application of an improved spherical omnidirectional loudspeaker array model in environmental noise pollution control. [PDF]

Sci Rep
Li Y, Li W, Fu M, Wang Z, Li Y.
europepmc   +3 more sources

Loudspeaker Equalization with Post-Processing [PDF]

EURASIP Journal on Advances in Signal Processing, 2002
Loudspeaker equalization is an essential technique in audio system design. A well-known equalization scheme is based on the deconvolution of the desired equalized response with the measured impulse response of the loudspeaker.
Ser Wee, Wang Peng, Zhang Ming
doaj   +2 more sources

Equalizing the In-Ear Acoustic Response of Piezoelectric MEMS Loudspeakers Through Inverse Transducer Modeling. [PDF]

Micromachines (Basel)
Massi O, Giampiccolo R, Bernardini A.
europepmc   +3 more sources

Spherical harmonic representation of the observed directional wave front in the time domain [PDF]

JASA Express Letters, 2022
Sound field reproduction algorithms require loudspeaker directivity, which is usually measured at discrete frequencies. A time domain model of loudspeaker directivity benefits broadband applications. This Letter proposes the concept of a directional wave
Jiarui Wang, Thushara Abhayapala, Prasanga Samarasinghe, Jihui Aimee Zhang   +3 more
doaj   +1 more source

Drone Applications Fighting COVID-19 Pandemic—Towards Good Practices

Drones, 2022
Of the recent epidemics, the impact of the COVID-19 pandemic has been particularly severe, not only putting our health at risk, but also negatively affecting our daily lives.
Ágoston Restás
doaj   +1 more source

Total Harmonic Distortion of a Piezoelectric MEMS Loudspeaker in an IEC 60318-4 Coupler Estimation Using Static Measurements and a Nonlinear State Space Model

Micromachines, 2021
We propose a method to evaluate the Total Harmonic Distortion generated by a cantilever-based PZT loudspeaker inside an IEC 60318-4 coupler. The model is validated using experimental data of a commercial loudspeaker.
Romain Liechti, Stéphane Durand, Thierry Hilt, Fabrice Casset, Christophe Poulain, Gwenaël Le Rhun, Franklin Pavageau, Hugo Kuentz, Mikaël Colin   +8 more
doaj   +1 more source

Selecting Program Material by Audio Features for Low-Frequency Perceptual Evaluation of Loudspeakers

Applied Sciences, 2021
The program material is of great importance for the results of the listening tests on loudspeakers, while the process of how to select the program material remains ambiguous.
Pei Yu, Shufeng Zhang, Xuelei Feng, Ziyun Liu, Yong Shen   +4 more
doaj   +1 more source

The effect of housing volume of a converting loudspeaker on the output electric power of a loudspeaker-based acoustic energy harvester

Journal of Physics: Theories and Applications, 2020
Acoustic energy harvester is a device that converts sound or acoustic energy into electrical energy. Generally, the main components of this instrument are an acoustic transducer and an acoustic resonator.
Ikhsan Setiawan
doaj   +1 more source