Dr.-Ing. Christoph Erdmann

Erdmann, C.: Hierarchical Vector Quantization: Theory and Application to Speech Coding, Ph. D. Dissertation IND, RWTH Aachen, Aachener Beiträge zu Digitalen Nachrichtensystemen (ABDN), 19, ISBN: 3-861-30646-8, Jul. 2005, ISBN: 3-861-30646-8

Erdmann, C. and Vary, P.: Performance of multistage vector quantization in hierarchical coding, in (ETT), Vol. 15, No. 4, pp. 363-372, Jul. 2004

Erdmann, C. and Vary, P.: Performance of multistage vector quantization in hierarchical coding, in Proceedings of International ITG Conference on Source and Channel Coding (SCC)(Erlangen, Germany), Jan. 2004

Hoelper, C., Frankort, A. and Erdmann, C.: Voiced/Unvoiced/Silence Classification for Offline Speech Coding, in Proceedings of International Student Conference on Electrical Engineering (POSTER)(Prague), May. 2003

Erdmann, C. and Vary, P.: Embedded Speech Coding Based on Pyramid CELP, in Proceedings of IEEE Workshop on Speech Coding (SCW)(Tsukuba, Japan), Oct. 2002

Hoelper, C., Frankort, A., Erdmann, C. and Vary, P.: A Novel Voiced/Unvoiced/Silence Classification Scheme for Offline Speech Coding, in Proceedings of European Signal Processing Conference (EUSIPCO)(Toulouse), Sep. 2002

Erdmann, C., Bauer, D. and Vary, P.: Pyramid CELP: Embedded Speech Coding For Packet Communications, in Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)(Orlando, Florida, USA), May. 2002

Erdmann, C., Vary, P., Fischer, K., Xu, W., Marke, M., Fingscheidt, T., Varga, I., Kaindl, M., Quinquis, C., Kövesi, B. and Massaloux, D.: A Candidate Proposal for a 3GPP Adaptive Multi-Rate Wideband Speech Codec, in Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)(Salt Lake City, Utah, USA), pp. 757 - 760, May. 2001

Erdmann, C., Vary, P., Fischer, K., Stegmann, J., Quinquis, C., Massaloux, D. and Kövesi, B.: An Adaptive Multi Rate Wideband Speech Codec with Adaptive Gain Re-Quantization, in Proceedings of IEEE Workshop on Speech Coding (SCW)(Delavan, Wisconsin, USA), pp. 145-147, Sep. 2000

Schnitzler, J., Eggers, J., Erdmann, C. and Vary, P.: Wideband Speech Coding Using Forward/Backward Adaptive Prediction with Mixed Time/Frequency Domain Excitation, in Proceedings of IEEE Workshop on Speech Coding (SCW)(Haikko Manor, Porvoo, Finland), pp. 4-6, Jun. 1999