Young Han Lee

Publications (7)0 Total impact

• Conference Proceeding: Artificial Bandwidth Extension of Narrowband Speech Signals for the Improvement of Perceptual Speech Communication Quality.

  Nam In Park, Young Han Lee, Hong Kook Kim
  Communication and Networking - International Conference, FGCN 2011, Held as Part of the Future Generation Information Technology Conference, FGIT 2011, in Conjunction with GDC 2011, Jeju Island, Korea, December 8-10, 2011. Proceedings, Part II; 01/2011
• Conference Proceeding: A Real-Time Audio Upmixing Method from Stereo to 7.1-Channel Audio.

  Chan Jun Chun, Young Han Lee, Yong Guk Kim, Hong Kook Kim, Choong Sang Cho
  Communication and Networking - International Conference, FGCN 2010, Held as Part of the Future Generation Information Technology Conference, FGIT 2010, Jeju Island, Korea, December 13-15, 2010. Proceedings, Part II; 01/2010
• Article: Entropy coding of compressed feature parameters for distributed speech recognition.

  Young Han Lee, Hong Kook Kim
  Speech Communication. 01/2010; 52:405-412.
• Conference Proceeding: A media-specific FEC based on huffman coding for distributed speech recognition.

  Young Han Lee, Hong Kook Kim
  INTERSPEECH 2009, 10th Annual Conference of the International Speech Communication Association, Brighton, United Kingdom, September 6-10, 2009; 01/2009
• Source

  Available from: mirlab.org

  Conference Proceeding: Class-dependent and differential Huffman coding of compressed feature parameters for distributed speech recognition.

  Young Han Lee, Deok Su Kim, Hong Kook Kim
  Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2009, 19-24 April 2009, Taipei, Taiwan; 01/2009
• Conference Proceeding: Bandwidth Extension of a Narrowband Speech Coder for Music Streaming Services Over IP Networks

  Young Han Lee, Hong Kook Kim
  [show abstract] [hide abstract]
  ABSTRACT: In this paper, we propose a bandwidth extension (BWE) algorithm for a low-bit-rate narrowband CELP coder using a spectral envelope sharing approach to develop a wideband speech coder. The developed wideband speech coder, referred to here as the BWE coder, is constructed using an embedded structure by adding an enhancement layer to the narrowband CELP coder. To minimize the bit-rate increase caused by the enhancement layer, the proposed BWE coder shares the spectral envelope and excitation parameters both with the narrowband CELP coder and the enhancement layer. In this paper, we choose G.729EV layer 2 as the baseline narrowband speech coder, and mel-frequency cepstral coefficients (MFCCs) are used to reconstruct the higher frequency components at the enhancement layer. By doing this, the bit-rate of the proposed BWE coder is found to be 12.7 kbit/s, just 0.7 kbit/s higher than that of G.729EV layer 2. It is also demonstrated from a MUSHRA test with audio signals from four different music genres, that the BWE coder gives better quality than G.729EV layer 2 and comparable quality to G.729EV layer 3, corresponding to an overall bit-rate reduction of 1.3 kbit/s.
  Signal Processing Systems, 2007 IEEE Workshop on; 11/2007
• Conference Proceeding: Bandwidth Extension of a Narrowband Speech Coder for Music Delivery over IP.

  Young Han Lee, Hong Kook Kim, Mi Suk Lee, Do-Young Kim
  Advances in Hybrid Information Technology, First International Conference, ICHIT 2006, Jeju Island, Korea, November 9-11, 2006, Revised Selected Papers; 01/2006