This work proposes a method to predict the fundamental frequency and voicing of a frame of speech from its MFCC representation. This has particular use in distributed speech recognition systems where the ability to predict fundamental frequency and voicing allows a time-domain speech signal to be reconstructed solely from the MFCC vectors. Prediction is achieved by modeling the joint density of MFCCs and fundamental frequency with a combined hidden Markov model-Gaussian mixture model (HMM-GMM) framework. Prediction results are presented on unconstrained speech using both a speaker-dependent database and a speaker-independent database. Spectrogram comparisons of the reconstructed and original speech are also made. The results show for the speaker-dependent task a percentage fundamental frequency prediction error of 3.1% is made while for the speaker-independent task this rises to 8.3%.
|Number of pages||4|
|Publication status||Published - Sep 2005|
|Event||9th European Conference on Speech Communication and Technology - Lisbon, Portugal|
Duration: 4 Sep 2005 → 8 Sep 2005
|Conference||9th European Conference on Speech Communication and Technology|
|Period||4/09/05 → 8/09/05|