Linear Predictive Coding
نویسنده
چکیده
منابع مشابه
Evaluation of a warped linear predictive coding scheme
Basically all conventional digital signal processing techniques can be warped by introducing a simple modification to the system. In this paper, the focus is in warped linear predictive coding techniques with application to speech and audio coding. The performance of warped LPC is compared with a conventional LPC in listening tests and in terms of technical measures. This is done at various sam...
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I Recent studies have shown that non-linear prediction can be implemented with neural networks, and non-linear predictors will on average achieve about 2 3 improvement in prediction gain over conventional linear predictors. In this paper, we take the advantage of non-linear prediction with neural network, apply it to predictive speech coding and attempt to improve the speech coding performance....
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Speech and audio codecs model the overall shape of the signal spectrum using envelope models. In speech coding the predominant approach is linear predictive coding, which offers high coding efficiency at the cost of computational complexity and a rigid systems design. Audio codecs are usually based on scale factor bands, whose calculation and coding is simple, but whose coding efficiency is low...
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This paper is about the reduction of the computational complexity of a speech codec. A Linear Predictive Coding procedure is developed to allow its implementation with Number Theoretic Transforms. The use of Fermat Number Transform can reduce, in a significant way, the cost of Linear Predictive algorithm implantation on Digital Signal Processor.
متن کاملA comparison of warped and conventional linear predictive coding
Frequency-warped signal processing techniques are attractive to many wideband speech and audio applications since they have a clear connection to the frequency resolution of human hearing. A warped version of linear predictive coding (LPC) is studied in this paper. The performance of conventional and warped LPC algorithms are compared in a simulated coding system using listening tests and conve...
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