By Topic

Quality Preserving Compression of a Concatenative Text-To-Speech Acoustic Database

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Shoham, T. ; Dept. of Electr. Eng., Technion - Israel Inst. of Technol., Haifa, Israel ; Malah, D. ; Shechtman, S.

A concatenative text-to-speech (CTTS) synthesizer requires a large acoustic database for high-quality speech synthesis. This database consists of many acoustic leaves, each containing a number of short, compressed, speech segments. In this paper, we propose two algorithms for recompression of the acoustic database, by recompressing the data in each acoustic leaf, without compromising the perceptual quality of the obtained synthesized speech. This is achieved by exploiting the redundancy between speech frames and speech segments in the acoustic leaf. The first approach is based on a vector polynomial temporal decomposition. The second is based on 3-D shape-adaptive discrete cosine transform (DCT), followed by optimized quantization. In addition we propose a segment ordering algorithm in an attempt to improve overall performance. The developed algorithms are generic and may be applied to a variety of compression challenges. When applied to compressed spectral amplitude parameters of a specific IBM small footprint CTTS database, we obtain a recompression factor of 2 without any perceived degradation in the quality of the synthesized speech.

Published in:

Audio, Speech, and Language Processing, IEEE Transactions on  (Volume:20 ,  Issue: 3 )