A selective excitation mode design for a wider high-to-low frequencies tunable capacitive MEMS resonator

2021 ◽  
Author(s):  
Hassen M. Ouakad
Keyword(s):  
Selective Excitation ◽  
Low Frequencies ◽  
Excitation Mode ◽  
Mode Design ◽  
Mems Resonator ◽  
Capacitive Mems

On the mechanical behavior of a wide tunable capacitive MEMS resonator for low frequency energy harvesting applications

2020 ◽  
Vol 26 (8) ◽  
pp. 2389-2398 ◽  
Author(s):  
Salar Ghasemi ◽  
Saeid Afrang ◽  
Ghader Rezazadeh ◽  
Sima Darbasi ◽  
Behzad Sotoudeh
Keyword(s):  
Energy Harvesting ◽  
Mechanical Behavior ◽  
Low Frequency ◽  
Mems Resonator ◽  
Capacitive Mems

Comparison of RSG-MOSFET and capacitive MEMS resonator detection

2005 ◽  
Vol 41 (5) ◽  
pp. 242 ◽  
Author(s):  
N. Abelé ◽  
V. Pott ◽  
K. Boucart ◽  
F. Casset ◽  
K. Séguéni ◽  
...  
Keyword(s):  
Mems Resonator ◽  
Capacitive Mems

The S-SH Confusion Test and the Effects of Frequency Lowering

2019 ◽  
Vol 62 (5) ◽  
pp. 1486-1505
Author(s):  
Joshua M. Alexander
Keyword(s):  
Cognitive Processing ◽  
Hearing Aids ◽  
Response Times ◽  
Nonlinear Frequency ◽  
Low Frequencies ◽  
Frequency Compression ◽  
Negative Side ◽  
Minimal Word ◽  
Low Pass ◽  
Negative Side Effects

PurposeFrequency lowering in hearing aids can cause listeners to perceive [s] as [ʃ]. The S-SH Confusion Test, which consists of 66 minimal word pairs spoken by 6 female talkers, was designed to help clinicians and researchers document these negative side effects. This study's purpose was to use this new test to evaluate the hypothesis that these confusions will increase to the extent that low frequencies are altered.MethodTwenty-one listeners with normal hearing were each tested on 7 conditions. Three were control conditions that were low-pass filtered at 3.3, 5.0, and 9.1 kHz. Four conditions were processed with nonlinear frequency compression (NFC): 2 had a 3.3-kHz maximum audible output frequency (MAOF), with a start frequency (SF) of 1.6 or 2.2 kHz; 2 had a 5.0-kHz MAOF, with an SF of 1.6 or 4.0 kHz. Listeners' responses were analyzed using concepts from signal detection theory. Response times were also collected as a measure of cognitive processing.ResultsOverall, [s] for [ʃ] confusions were minimal. As predicted, [ʃ] for [s] confusions increased for NFC conditions with a lower versus higher MAOF and with a lower versus higher SF. Response times for trials with correct [s] responses were shortest for the 9.1-kHz control and increased for the 5.0- and 3.3-kHz controls. NFC response times were also significantly longer as MAOF and SF decreased. The NFC condition with the highest MAOF and SF had statistically shorter response times than its control condition, indicating that, under some circumstances, NFC may ease cognitive processing.ConclusionsLarge differences in the S-SH Confusion Test across frequency-lowering conditions show that it can be used to document a major negative side effect associated with frequency lowering. Smaller but significant differences in response times for correct [s] trials indicate that NFC can help or hinder cognitive processing, depending on its settings.

Scattering by a buried conducting object of general shape at low frequencies

1991 ◽  
Vol 138 (3) ◽  
pp. 213 ◽  
Author(s):  
A. Helaly ◽  
A. Sebak ◽  
L. Shafai
Keyword(s):  
General Shape ◽  
Low Frequencies

INTERNAL FRICTION AND MODULUS MEASUREMENTS IN COLD-WORKED AND ELECTRON-IRRADIATED COPPER AT LOW FREQUENCIES

1971 ◽  
Vol 32 (C2) ◽  
pp. C2-147-C2-147
Author(s):  
H. BRUMME ◽  
H. EBENER ◽  
G. SOKOLOWSKI
Keyword(s):  
Internal Friction ◽  
Low Frequencies ◽  
Cold Worked
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