Abstract
Problem statement: In tonal-language speech, since tone plays important role not only on the naturalness and also the intelligibility of the speech, it must be treated appropriately in a speech coder algorithm. Approach: This study proposes an analytical study of the technique of High Pitch Delay Resolutions (HPDR) applied to the adaptive codebook of core coder of Multi-Pulse based Code Excited Linear Predictive (MP-CELP) coder. Results: The experimental results show that the speech quality of the MP-CELP speech coder with HPDR technique is improved above the speech quality of the conventional coder. An optimum resolution of pitch delay is also presented. Conclusion: From the analytical study, it has been found that the proposed technique can improve the speech coding quality.
Highlights
Structure of sounds or syllables is composed of one vowel unit or one diphthong, one, two or three
Approach: This study proposes an analytical study of the technique of High Pitch Delay Resolutions (HPDR) applied to the adaptive codebook of core coder of Multi-Pulse based Code Excited Linear Predictive (MP-CELP) coder
The experimental results show that the speech quality of the MP-CELP speech coder with HPDR technique is improved above the speech quality of the conventional coder
Summary
Structure of sounds or syllables is composed of one vowel unit or one diphthong, one, two or three. Scalable coder for Moving Picture Expert Group-4 ACELP with tonal language, it showed the degraded (MPEG-4) speech coder standards at low bit rate This speech quality when compared to those of toneless flexible coder employs the multi-pulse excitation which the number of pulses in fixed-entry codebook is selective for bitrate scalability and multiple bitrate functionality according to the MPEG-4 CELP speech coder requirements (Nomura et al, 1998; Chomphan, 2010b). To improve speech quality for background noise conditions, the adaptive pulse location restriction method are applied (Ozawa and Serizawa, 1998) This coder operates at various bitrates ranging from 4-12 language. Since Thai is a tonal language, a syllable is composed of consonants, vowels and tone (Wutiwiwatchai and Furui, 2007).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
