portfolio


Microphone Array

 Video

Dual-Microphone-based Robust Speech Recognition (Interspeech2011)

 Publication

  1. Liao, H.-C., Liao, Y.-F., and Lee, C.-H., "Maximum Confidence Measure Based Interaural Phase Difference Estimation for Noise Masking in Dual-Microphone Robust Speech Recognition", In INTERSPEECH-2011, pp. 473-476, 2011.
  2. Liao, H.-C., "Investigation on Interaural Time Difference Based Speech Enhancement," ICL Technical Journal, No. 139, pp. 34-38, 2011.
  3. Chen, S-C., Chung, H.-C., Liao, Y.-F., and Liao, H.-C., "Improving Sub-band Likelihood Maximizing Beamforming for Microphone Array Signal Processing", National Symposium on Telecommunications, 2010.

 Patent

  1. (pending patent) Liao, H.-C., “SPEECH ENHANCEMENT METHOD,” United States patent application, 2011.
  2. (pending patent) Liao, H.-C., “SPEECH ENHANCEMENT METHOD,” PRC patent application, 2011.
  3. (pending patent) Liao, H.-C., “SPEECH ENHANCEMENT METHOD,” ROC patent application, 2011.
  4. (pending patent) Liao, H.-C., “MICROPHONE-ARRAY-BASED SPEECH RECOGNITION SYSTEM AND METHOD,” United States patent application, 2011.
  5. (pending patent) Liao, H.-C., “MICROPHONE-ARRAY-BASED SPEECH RECOGNITION SYSTEM AND METHOD,” PRC patent application, 2011.
  6. (pending patent) Liao, H.-C., “MICROPHONE-ARRAY-BASED SPEECH RECOGNITION SYSTEM AND METHOD,” ROC patent application, 2011.

Tone Assessment

 Video

Developing a prototype of an adaptive Chinese pronunciation training system

 Publication

  1. Liao, H.-C., Guan, Y.-H., and Tu, J.-J., "Developing a prototype of an adaptive Chinese pronunciation training system", submitted to Computer Assisted Language Learning .
  2. Chen, J.-C., Liao, H.-C., and Chang, S.-C., "Corrective Feedback Technique for Automatic Mandarin Tone Assessment," ICL Technical Journal, No. 139, pp. 39-45, 2011.
  3. Guan, Y.-H., Liao, H.-C. and Tu, J.-J., "Developing A Prototype of An Adaptive Chinese Pronunciation Training System", ACTFL ANNUAL CONVENTION AND WORLD LANGUAGES EXPO, 2010.
  4. Liao, H.-C., Chen, J.-C., Chang, S.-C., Guan, Y.-H., Lee, C.-H., "Decision Tree Based Tone Modeling with Corrective Feedbacks for Automatic Mandarin Tone Assessment", In INTERSPEECH-2010, pp. 602-605, 2010.
  5. Guan, Y.-H. and Liao, H.-C., “An Automatic Mandarin Tonal Error-Detection System: The Preliminary Results,” Chung Yuan Journal of Teaching Chinese as a Second Language, Vol. 35, No. 6, pp. 117–137, 2009.

 Patent

  1. (pending patent) Chang, S.-C., Liao, H.-C., and Chen, J.-C., “LANGUAGE LEARNING SYSTEM, LANGUAGE LEARNING METHOD, AND COMPUTER PRODUCT THEREOF,” United States patent application, 2010.
  2. (pending patent) Chang, S.-C., Liao, H.-C., and Chen, J.-C., “LANGUAGE LEARNING SYSTEM, LANGUAGE LEARNING METHOD, AND COMPUTER PRODUCT THEREOF,” PRC patent application, 2010.
  3. (pending patent) Chang, S.-C., Liao, H.-C., and Chen, J.-C., “LANGUAGE LEARNING SYSTEM, LANGUAGE LEARNING METHOD, AND COMPUTER PRODUCT THEREOF,” ROC patent application, 2010.

 Open Source Software

  1. Simple Prompt Recording
    • Simple Prompt Recording could help you to collect speech data by using your prompts easily. It is a simple recording program that could display prompt while recording. The program is based on The Snack Sound Toolkit and written in python.
    • Simple Prompt Recording is an open source software. It could be download from http://code.google.com/p/simple-prompt-recording/

Brain-Computer Interface

 Video

Brainket Demo ‎(2009)‎

EEG-Based eRobot Agent ‎(2005)‎

 Publication

  1. Liao, H.-C. and Tsai, S.-H., "A Google Earth Neurofeedback Game," Proceeding of 2009 Annual Symposium of The Biomedical Engineering Society of ROC, Dec. 2009.
  2. Liao, H.-C. and Wu, L.-W., "An EEG-based Brain-controlled robot agent," ICL Technical Journal, No. 128, pp. 85-92, 2009.
  3. Wu, L.-W., Liao, H.-C., Hu, J.-S., and Lo, P.-C., "Brain-controlled robot agent: an EEG-based eRobot agent," Industrial Robot, Vol. 35, No. 6, pp. 507–519, 2008.

 Patent

  1. Wu, L.-W. and Liao, H.-C., “Architecture of an Embedded Internet Robot System Controlled by Brain Waves,” United States Patent 7,260,430, August 21, 2007.
  2. Wu, L.-W. and Liao, H.-C., “Architecture of an Embedded Internet Robot System Controlled by Brain Waves,” ROC patent (Invention No. I 257214), June 21, 2006.


Meditation EEG Research

 Video

A simple game of HRV biofeedback

EEG vs HRV plot (2006)

Development of Real-time HRV Analyzer and its Application to the Biofeedback System

Alpha-dependent VEP for the Meditation EEG Research

Biofeedback for the Meditation Research ‎(December 2004)‎

Meditation EEG Research


 Publication

  1. Liao, H.-C. and Lo, P.-C., “Investigation of EEG Local Spatiotemporal Synchronization by Multivariate AR Model – a Preliminary Study,” Proceeding of 2008 Annual Symposium of The Biomedical Engineering Society of ROC, Dec. 2008.
  2. Liao, H.-C. and Lo, P.-C., “Investigation on Spatiotemporal Characteristics of Zen-Meditation EEG Rhythms,” the Journal of International Society of Life Information Science, vol. 25, no. 1, pp. 63–71, 2007.
  3. Liao, H.-C., Liu, C.-Y. and Lo, P.-C., “Investigation of Visual Perception under Zen-Meditation based on Alpha-dependent F-VEPs,” Journal of Biomedical Engineering Research, vol. 27, no. 6, pp. 384–391, 2006.
  4. Liao, H.-C. and Lo, P.-C., “Meditation EEG Overview Based on Subband Features Quantified by AR Model,” the Journal of International Society of Life Information Science, vol. 24, no. 1, pp. 19–28, 2006.
  5. Huang, C.-C., Liao, H.-C. and Lo, P.-C., “Development of Real-time HRV Analyzer and its Application to the Biofeedback System,” Proceeding of 2006 Annual Symposium of The Biomedical Engineering Society of ROC, Dec. 2006.
  6. Liao, H.-C. and Lo, P.-C., “Long-term Meditation EEG Interpretation Based on Subband AR Coefficients,” Proceeding of 2002 Annual Symposium of The Biomedical Engineering Society of ROC, pp.E1.48-49, Dec. 2002.
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