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Enhancement that was perceptually improvement of coded acoustic signal
Enhancement that was perceptually improvement of coded acoustic signal
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机译:感知到的编码声音信号改善的增强
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摘要
The invention relates to encoding of broadband and narrowband acoustic source signals (x) such that the perceived sound quality of corresponding reconstructed signals is improved in comparison to the known solutions. An enhancement estimation unit (102), operating in serial or in parallel with the regular encoding / decoding means (101), perceptually enhances a reconstructed acoustic source signal by utilisation of an enhancement spectrum (C) comprising a larger number of spectral coefficients than the number of sample values in corresponding frames of the signals carrying the basic encoded representation of the acoustic source signal. The thus extended block length of the enhancement spectrum fram provides a basis for accomplishing the desired improvement of the perceived sound quality. IMAGE
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