DocumentCode :
2253143
Title :
Digital sound reconstruction using arrays of CMOS-MEMS microspeakers
Author :
Diamond, B.M. ; Neumann, J.J., Jr. ; Gabriel, K.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
fYear :
2002
fDate :
24-24 Jan. 2002
Firstpage :
292
Lastpage :
295
Abstract :
We report on the generation of sound by the superposition of discrete sound pulses from arrays of micromachined membrane microspeakers or speaklets. Digital sound reconstruction (DSR) is unlike any other reconstruction approach in use, offering true, direct digital reconstruction of sound. CMOS-MEMS micromachining techniques allow the integration of hundreds to thousands of microspeakers as as well as sound optimization electronics on a single chip. Nonlinearities typically problematic for analog speakers can be controlled through membrane geometries and material properties to produce acoustic responses useful for DSR.
Keywords :
CMOS integrated circuits; acoustic transducer arrays; loudspeakers; membranes; micromachining; micromechanical devices; sound reproduction; CMOS-MEMS microspeaker array; acoustic response; digital sound reconstruction; discrete sound pulse; micromachined membrane microspeaker; single chip; sound optimization electronics; speaklet; Acoustic arrays; Acoustic pulses; Biomembranes; Control nonlinearities; Geometry; Loudspeakers; Material properties; Micromechanical devices; Nonlinear acoustics; Pulse generation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Micro Electro Mechanical Systems, 2002. The Fifteenth IEEE International Conference on
Conference_Location :
Las Vegas, NV, USA
ISSN :
1084-6999
Print_ISBN :
0-7803-7185-2
Type :
conf
DOI :
10.1109/MEMSYS.2002.984260
Filename :
984260
Link To Document :
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