Especially the speech coding algorithm, which has low bit rate and high quality, provides qualified multimedia services based on limited channel width. The paper studies the application of DSP technology of TMS320VC5509 in data speech coding algorithm, the overall plan of coding design, AIC23 ...
undergoing a rapid growth in terms of both performance and applications and this is fueHed by the advances being made in the areas of microelectronics, computation and algorithm design.Speech processing relates to three aspects of voice communications: -Speech Coding and transmission which is mainly ...
This paper presents the design and implementation of a digital telephone answering device with a built-in 8 kbit/s speech coding algorithm.The hardware consists of a low-cost DSP chip which performs speech compression in real-time as well as all house-keeping functions for handling the telephone...
8, 2002, entitled “Fine Grain Scalability Speech Coding for Multi-Pulses CELP Algorithm.” These related applications are expressly incorporated herein by reference. DESCRIPTION OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention is generally related to speech coding ...
1.Based on the SELP vocoder algorithm which coding speed is 600bps, this paper brings out a kind of new speech CODEC vocoder circuit design to meet the requirement of algorithm which is complicated and large, and makes vocoder work under low speed, gets goool speech quality.基于编码速率600bps...
ACRcould dynamically adjust the speech coding algorithm used based on the current user environment. For example, the trade-off between speech and error-correction bits could change in response to current radio channel conditions, as in the 4.7 to 12.2 kbps GSM-AMR cellular algorithm, allowing high...
In the design of low-bit-rate (LBR) speech coding algorithms, language variability is often considered to be of secondary importance in comparison with other operational factors such as speaker variability and noise. Given that languages differ extensively in the composition of the spectral envelope ...
A speech coding system and associated method relies on a speech coder and a speech decoder. The speech coder provides speech spectrum information, including Line Spectral Frequency (LSF) information, for respective frames of speech. The LSF information is provided to the speech decoder. The speech...
In a speech coding system with a speech encoder and a speech decoder cooperating with said speech encoder, the speech encoder comprises a pre-processor and an ADPCM (adap
A method and apparatus for the variable rate coding of a speech signal. An input speech signal is classified and an appropriate coding mode is selected based on this clas