Alfonso Avila-Ortega

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Handheld electrolarynx is a popular device used to produce voice by laryngectomized patients. A switching capacitor CMOS based device for hands free electrolarynx activation using electromyographic signals, is proposed. The prototype intends to give laryngectomized patients an option to produce voice in a more comfortable and natural way. The prototype is(More)
The TCP protocol has a checksum operation to verify the data integrity. This operation is performed over all bytes of a TCP segment, consuming several clock cycles and occupying precious processing time from embedded processors. This paper presents the implementation of the TCP checksum in an independent hardware module to reduce the processing time. This(More)
This paper develops an active noise control system (ANC) prototype to be used over a duct network model. The FX-LMS and FBFX-LMS algorithms were implemented using the TMS320C50 fixed point DSP system. Test results show that the FX-LMS algorithm achieves attenuations of up to 43 dB (at 300 Hz) and a mean attenuation of 38.72 dB for frequencies from 100 to(More)
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