The purpose of this study is to find a stable spectral feature and illustrate the usability of this feature in compressing the original signal. The compression method is suitable for vibrotactile ...

The use of surface plasmon resonance (SPR) 1,2 for gas detection and biosensing dates back to 1982 (refs 3, 4). Since then, we have witnessed considerable research activities aimed at the development ...

Modulation is the act of translating some low-frequency or baseband signal (voice, music, and data) to a higher frequency. Why do we modulate signals? There are at least two reasons: to allow the ...