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Advances in WP1

Trento Meeting 11-12 January 2007. Advances in WP1. www.loquendo.com. WP1: Environment & Sensor Robustness T1.2 Noise Independence. Noise Reduction: Spectral Subtraction (YEAR 1) and Spectral Attenuation (YEAR2) Evaluation of feature normalization techniques in Loquendo ASR

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Advances in WP1

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  1. Trento Meeting 11-12 January 2007 Advances in WP1 www.loquendo.com

  2. WP1: Environment & Sensor RobustnessT1.2 Noise Independence Noise Reduction: • Spectral Subtraction (YEAR 1) and Spectral Attenuation (YEAR2) • Evaluation of feature normalization techniques in Loquendo ASR (HEQ study + Revision 2) (Q3/4 YEAR2) (PEQ study) (YEAR3)

  3. Y1,2+PEQ Front End configuration

  4. PEQ + Loquendo ASR on Aurora2 speech databases

  5. Y1,2+PEQ Performance evaluations Performances in terms of Word Accuracy and (Error Reduction – with respect to RPLP experiment)

  6. Y1,2+PEQ Performance evaluations Performances in terms of Word Accuracy and (Error Reduction – with respect to RPLP experiment)

  7. PEQ + Loquendo ASR on Aurora3 speech databases

  8. Y1,2+PEQ Performance evaluations Performances in terms of Word Accuracy and (Error Reduction – with respect to RPLP experiment)

  9. PEQ + Loquendo ASR on Aurora4 speech databases

  10. Y1,2+PEQ Performance evaluations(Sennheiser microphone) Performances in terms of Word Accuracy and (Error Reduction – with respect to RPLP experiment)

  11. Y1,2+PEQ Performance evaluations(second microphone) Performances in terms of Word Accuracy and (Error Reduction – with respect to RPLP experiment)

  12. WP1: Workplan • Selection of suitable benchmark databases; (m6) • Completion of LASR baseline experimentation of Spectral Subtraction (Wiener SNR dependent) (m12) • Discriminative VAD (training+AURORA3 testing) (m16) • Exprimentation of Spectral Attenuation rule (Ephraim-Malah SNR dependent) (m21) • Preliminary results on spectral subtraction and HEQ techniques (m24) • Integration of denoising and normalization techniques (PEQ) (m33)

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