Veröffentlichungen – Details
An Information Theoretic View on Artificial Bandwidth Extension in Noisy Environments
- Autoren:
- Thomas Esch und Peter Vary
- Buchtitel:
- Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
- Veranstaltungsort:
- Kyoto, Japan
- Veranstalt.datum:
- 25.-30.3.2012
- Organisation:
- IEEE
- Veröffentlichungsort:
- Piscataway, NJ, USA
- Veröffentlich.datum:
- März 2012
- Seiten:
- 4073–4076
- Sprache:
- Englisch
Kurzfassung
Artificial Bandwidth Extension (ABWE) exploits spectral dependencies of speech signals and aims at recovering missing high frequency components if only the narrowband speech signal is available. This contribution provides an information theoretic view on ABWE when used in noisy conditions. Based on the results of [1], a performance bound of ABWE is formulated if the narrowband signal is disturbed by additive noise. The performance bound is evaluated using real entropy measurements and the influence of noise suppression prior to ABWE is investigated.
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