Mel-frequency cepstrum encoding in analog floating-gate circuitry

P.D. Smith, M. Kucic, R. Ellis, P. Hasler, D.V. Anderson
2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353)  
This paper presents a continuous-time mel-frequency cepstrum encoding IC using analog circuits and floating-gate computational arrays. We present the dynamics of several floating-gate computational buildings blocks and accompanying experimental measurements. We also present a novel approach to programmable signal spectrum decomposition, analog frequency transforms, and spectrum compaction. Experimental data is presented from circuits fabricated on a 0.5 m nwell CMOS process available through
more » ... vailable through MOSIS. This system can act as the front-end for larger digital or analog speech processing systems.
doi:10.1109/iscas.2002.1010545 dblp:conf/iscas/SmithKEHA02 fatcat:2keeotn225dphd3dxq5ecdkde4