Speech waveform coding: Techniques and performance
نویسندگان
چکیده
منابع مشابه
Wideband Speech Coding at 4 kbps using Waveform Interpolation
In this paper we present a new low rate, wideband speech coder operating at 4 kbps and based on Waveform Interpolation (WI). An outline of WI speech coding is provided together with a description of its adaptation to wideband speech. Particular emphasis is placed on the quantisation of the WI parameters. Included is a detailed analysis of the quantisation requirements for the Line Spectral Freq...
متن کاملA Voice Production Model for Waveform Coding Speech
Voice production models are used for speech compression thus reducing the encoding data rates and storage space for speech signaling processing. The legacy voice production model consists of a vocal source model and a vocal tract model. This paper presents a simpler voice production model adapted to waveform coding of speech: the Mathieu Waveform Coder (MWC) model. The MWC model yields weighted...
متن کاملQuantization of Magnitude Spectra in Waveform Interpolation Speech Coding
Efficient quantization of magnitude spectra is one of the central issues in speech coding, especially with techniques operating at low bit rates. This paper presents a novel high-accuracy quantization scheme for the magnitude spectra in waveform interpolation speech coding. The performance of the proposed techniques, including both their accuracy and complexity, is studied using objective measu...
متن کاملCoding of Excitation Signals In a Waveform Interpolation Speech Coder
The goal of this thesis is to improve the quality of the Waveform Interpolation (WI) coded speech at 4.25 kbps. The quality improvement is focused on the efficient coding scheme of voiced speech segments, while keeping the basic coding format intact. In the WI paradigm voiced speech is modelled as a concatenation of the Slowly Evolving pitch-cycle Waveforms (SEW). Vector quantization is the opt...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1978
ISSN: 0001-4966
DOI: 10.1121/1.2003840