ISCA Archive Interspeech 2007
ISCA Archive Interspeech 2007

A robust mel-scale subband voice activity detector for a car platform

A. Álvarez, R. Martínez, P. Gómez, V. Nieto, V. Rodellar

Voice-controlled devices provide a smart solution to operate add-on appliances in a car. Although, speech recognition appears as a key technology to produce useful end-user interfaces, the amount of acoustic disturbances existing in automotive platforms usually prevents satisfactory results. In most of the cases, noise reduction techniques involving a Voice Activity Detector (VAD) are required. Through this paper, a robust method for speech detection under the influence of noise and reverberation in an automobile environment is proposed. This method determines a consistent speech/non-speech discrimination by means of a set of Order-Statistics Filters (OSFs) applied to the log-energies associated to a mel-scale based subband division. The paper also includes an extensive performance evaluation of the algorithm using AURORA3 database recordings. According to our simulation results, the proposed algorithm shows on average a significantly better performance than standard VADs such as ITU-G.729B, GSM-AMR or ETSI-AFE, and other recently reported methods.

doi: 10.21437/Interspeech.2007-92

Cite as: Álvarez, A., Martínez, R., Gómez, P., Nieto, V., Rodellar, V. (2007) A robust mel-scale subband voice activity detector for a car platform. Proc. Interspeech 2007, 226-229, doi: 10.21437/Interspeech.2007-92

  author={A. Álvarez and R. Martínez and P. Gómez and V. Nieto and V. Rodellar},
  title={{A robust mel-scale subband voice activity detector for a car platform}},
  booktitle={Proc. Interspeech 2007},