Name
Abstract | ||
|---|---|---|
We present the first experimental integrated-circuit vocal tract by mapping fluid volume velocity to current, fluid pressure to voltage, and linear and nonlinear mechanical impedances to linear and nonlinear electrical impedances. The 275 muW analog vocal tract chip includes a 16-stage cascade of two-port pi-elements that forms a tunable transmission line, electronically variable impedances, and a current source as the glottal source. A nonlinear resistor models laminar and turbulent flow in the vocal tract. The measured SNR at the output of the analog vocal tract is 64, 66, and 63 dB for the first three formant resonances of a vocal tract with uniform cross-sectional area. The analog vocal tract can be used with auditory processors in a feedback speech locked loop-analogous to a phase locked loop-to implement speech recognition that is potentially robust in noise. Our use of a physiological model of the human vocal tract enables the analog vocal tract chip to synthesize speech signals of interest, using articulatory parameters that are intrinsically compact and linearly interpolatable. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1109/TBCAS.2008.2005296 | IEEE Trans. Biomed. Circuits and Systems |
Keywords | DocType | Volume |
nonlinear resistor,nonlinear mechanical impedance,human vocal tract physiological model,glottal source,electronically tunable resistor,linear mechanical impedance,speech recognition,mapping fluid volume velocity,interpolation,analogue integrated circuits,nonlinear electrical impedance,nonlinear resistor models,phase locked loop,speech prosthesis,analysis-by-synthesis,articulatory parameters,speech synthesis,physiological models,feedback,phase locked loops,turbulent flow,speech signal synthesis,mos resistor,linear electrical impedance,speech recognition equipment,analog integrated-circuit vocal tract,auditory processors,laminar flow,feedback speech locked loop,biomedical electronics,vocal tract,turbulence,biomimetics,two-port pi-elements,analog vocal tract chip,speech codec | Journal | 2 |
Issue | ISSN | Citations |
4 | 1932-4545 | 5 |
PageRank | References | Authors |
0.69 | 7 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Keng Hoong Wee | 1 | 23 | 5.98 |
| L Turicchia | 2 | 99 | 14.56 |
| R Sarpeshkar | 3 | 746 | 110.05 |