Title :
Esophageal Speech enhancement using modified voicing source
Author :
Ishaq, Rizwan ; Garcia Zapirain, Begona
Author_Institution :
DeustoTech-LIFE, Univ. of Deusto, Bilbao, Spain
Abstract :
This paper presented the modification to Esophageal Speech (ES) enhancement using Adaptive Gain Equalizer (AGE) for modifying the voicing source. However, the voicing source used previously with AGE, obtained using conventional Linear Predication (LP) vocal tract transfer function (AGE-LP), has produced low quality speech due to sensitivity to background noise. The better quality ES can be obtained by estimating voicing source through Iterative Adaptive Inverse Filtering utilized Weighted Linear Prediction (WLP) vocal tract transfer function (AGE-IAIF). The system performance evaluated through Harmonic to Noise Ratio (HNR), and system has shown 3 dB enhancement by AGE-IAIF over previously enhancement method AGE-LP.
Keywords :
adaptive filters; iterative methods; speech enhancement; AGE; AGE-IAIF; AGE-LP; ES enhancement; HNR; adaptive gain equalizer; esophageal speech enhancement; harmonic-to-noise ratio; iterative adaptive inverse filtering; linear predication; modified voicing source; vocal tract transfer function; weighted linear prediction; Acoustics; Adaptation models; Adaptive equalizers; Flyback transformers; Speech; Vibrations; Esophageal speech; Filter bank; Iterative adaptive inverse filtering; Linear predictive coding; adaptive gain equalizer;
Conference_Titel :
Signal Processing and Information Technology(ISSPIT), 2013 IEEE International Symposium on
Conference_Location :
Athens
DOI :
10.1109/ISSPIT.2013.6781881
