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检索条件"主题词=Linear predictive coding"
2455 条 记 录,以下是821-830 订阅
Exploiting simultaneously masked linear prediction in a WI speech coder
Exploiting simultaneously masked linear prediction in a WI s...
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7th IEEE Workshop on Speech coding
作者: Lukasiak, J Burnett, IS Univ Wollongong Whisper Labs TITR Wollongong NSW 2522 Australia
This paper uses a method of incorporating simultaneous masking into the calculation of a linear predictive filter (SMLPC) as the front end to a 2kbps waveform interpolation (WI) speech coder. A modification to the mas... 详细信息
来源: 评论
Performance comparison of intraframe and interframe LSF quantization in packet networks
Performance comparison of intraframe and interframe LSF quan...
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7th IEEE Workshop on Speech coding
作者: Wang, J Gibson, JD So Methodist Univ Dept Elect Engn Dallas TX 75275 USA
Line Spectrum Frequencies(LSF) have been the prevailing parameter set to represent LPC coefficients in speech coding. Extensive research has been performed to exploit their interframe and intraframe correlations and q... 详细信息
来源: 评论
A sinusoidal LPC vocoder
A sinusoidal LPC vocoder
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7th IEEE Workshop on Speech coding
作者: Hedelin, P Chalmers Univ Technol Dept Signals & Syst Informat Theory Grp S-41296 Gothenburg Sweden
Twenty years of work with sinusoidal modeling of speech has lead to very competitive principles of low rate coding. In this study, we discuss a few issues in the design of a sinusoidal coding system. We stress that by... 详细信息
来源: 评论
Subband synthesized LPC vector quantization (SBS-LPC-VQ)
Subband synthesized LPC vector quantization (SBS-LPC-VQ)
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7th IEEE Workshop on Speech coding
作者: Cao, BS Lucent Technol Bell Labs Innovat Wireless Network Syst Whippany NJ 07981 USA
This paper presents a new LPC parameter quantization method - SubBand Synthesized LPC Vector Quantization (SBS-LPC-VQ) [9]. In the subband synthesis process, the relationships between subband spectra and whole band LP... 详细信息
来源: 评论
An information theoretic perspective on the speech spectrum process
An information theoretic perspective on the speech spectrum ...
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7th IEEE Workshop on Speech coding
作者: Nordén, F Eriksson, T Hedelin, P Chalmers Univ Technol Dept Signals & Syst Informat Theory Lab S-41296 Gothenburg Sweden
In this paper, an information theoretic study of properties of the speech spectrum process is performed. Various techniques to model the probability density function are applied to the spectrum source to compute rate-... 详细信息
来源: 评论
Efficient parameter quantisation for 2.4/1.2 kb/s split-band LPC coding
Efficient parameter quantisation for 2.4/1.2 kb/s split-band...
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7th IEEE Workshop on Speech coding
作者: Villette, S Cho, YD Kondoz, AM Univ Surrey Ctr Commun Syst Res Guildford GU2 7XH Surrey England
Speech coding at very low bit rates has many applications such as answering machines, IP telephony, mobile communications, military communications etc. Most low bit rate coders operate at around 2.4 kb/s, as the speec... 详细信息
来源: 评论
Design and performance of a 4.0 kbit/s speech coder based on Frequency-Domain Interpolation
Design and performance of a 4.0 kbit/s speech coder based on...
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7th IEEE Workshop on Speech coding
作者: Bhaskar, U Nandkumar, S Swaminathan, K Hughes Network Syst Germantown MD 20876 USA
The 4.0 kbit/s speech codec described in this paper is based on a Frequency Domain Interpolative (FDI) coding technique, which belongs to the class of prototype waveform Interpolation (PM;I) coding techniques. The cod... 详细信息
来源: 评论
Combined speech and audio coding by discrimination
Combined speech and audio coding by discrimination
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7th IEEE Workshop on Speech coding
作者: Tancerel, L Ragot, S Ruoppila, VT Lefebvre, R Univ Sherbrooke Dept Elect Engn Sherbrooke PQ J1K 2R1 Canada
We propose in this paper a general solution for combined speech and audio coding. Particularly, we describe a speech/music discrimination procedure for multi-mode wideband coding. The speech/music decision is updated ... 详细信息
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Low-rate quantization of spectral information in a 4 kb/s pitch-synchronous CELP coder
Low-rate quantization of spectral information in a 4 kb/s pi...
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7th IEEE Workshop on Speech coding
作者: Guerchi, D Mermelstein, P Univ Quebec INRS Telecommun Montreal PQ M5A 1C6 Canada
A new efficient algorithm for quantizing the spectral information for a Pitch-Synchronous CELP (PSCELP) speech coder is proposed. LPC analysis in the PSCELP is carried out once per pitch period. Direct quantization of... 详细信息
来源: 评论
A 1200 bps speech coder based on MELP
A 1200 bps speech coder based on MELP
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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
作者: Tian Wang K. Koishida V. Cuperman A. Gersho J.S. Collura SignalCom Inc. Goleta CA USA National Security Agency Fort Meade MD USA
This paper presents a 1.2 kbps speech coder based on the mixed excitation linear prediction (MELP) analysis algorithm. In the proposed coder, the MELP parameters of three consecutive frames are grouped into a superfra... 详细信息
来源: 评论