منابع مشابه
Speech Compression using ADPCM
We propose a simple speech compression algorithm using subband division and ADPCM (Adaptive Differential Pulse Code Modulation) algorithm. Although speech data are stored in a semiconductor memory device, its capacity and the available network capacity are limited. Therefore, it is necessary to compress the data as much as possible. The first is that the reconstructed datum must be understood c...
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Adaptive Differential Pulse Code Modulation, or ADPCM, is a digital compression technique used mainly for speech compression in telecommunications. ADPCM is a waveform codec that can also be used to code other signals than speech, such as music or sound effects. ADPCM is simpler than advanced low bit-rate voice coding techniques and doesn’t require as heavy calculations, which means encoding an...
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A pipelined architecture for adaptive pulse code modulation (ADPCM) is presented. The architecture is developed by the application of relaxed fo rm of look-ahead. The hardware overhead is only the the pipelining latches and is independent of the number of quantizer levels, the predictor order and the pipelining level. The codec latency is smaller than the level of pipelining. Under the assumpti...
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This paper describes a meta modeling technique which permits to describe a KBS (Knowledge Base Systems) according to three axis: the object of reuse axis , the levels of granularity axis and the reuse process axis. The object of reuse axis allows to see a KBS as a set of inter-related components for reuse purposes. The levels of granularity axis allows to describe the KBS components according t...
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section, leading to the introduction of our proposed variable bit rate system. After some coverage of the performance of the system with a standard linear predictor, we introduce a Kalman predictor, and show an approach to reduce the computational complexity. We discuss the use of perceptual weighting within the system, and bit error resynchronization for the Arithmetic Coding (AC) data stream....
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ژورنال
عنوان ژورنال: Pacific Science Review A: Natural Science and Engineering
سال: 2015
ISSN: 2405-8823
DOI: 10.1016/j.psra.2015.12.004