DRA Audio Coding Standard: An Overview
Time-Frequency Analysis: Frequently referred to as an analysis filter bank, it transforms each channel of the input audio signal into a set of time-frequency parameters suitable for quantization and encoding so that their statistical redundancy and perceptual irrelevance can be readily exploited. It may come in the form of Fourier transform, discrete cosine transform(DCT), linear prediction, or subband filter banks. Modified discrete cosine transform (MDCT) is a filter bank widely used in audio coding standards.
Joint Channel Coding:...
KeywordsFilter Bank Audio Signal Window Function Current Frame Quantization Noise
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