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Effective implementation of the analysis and synthesis filter bank for MPEG · AAC and MPEG · AAC · ELD encoder / decoder
Effective implementation of the analysis and synthesis filter bank for MPEG · AAC and MPEG · AAC · ELD encoder / decoder
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机译：有效实施MPEG·AAC和MPEG·AAC·ELD编码器/解码器的分析和综合滤波器组
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摘要
It can include the MDCT filter bank which the encoder, advanced audio coding (AAC) algorithm and AAC enhansudo low - delay (ELD) can make in order to mount algorithm or both algorithm and be done. Vis-a-vis AAC algorithm, as for the sequence of the input sample, you send to the MDCT filter bank directly in order to obtain the sequence of the output sample. Vis-a-vis AAC ELD algorithm, the mark of the input sample of the sequence of the input sample reverses, the MDCT analysis filter bank is applied the mark of the input sample by the sequence which reverses in order to obtain the sequence of the output sample, order of the sequence of the output sample is reversed, the mark every of one output sample of the sequence of the output sample reverses. In the same way, as for the decoder, it can include the core IMDCT synthetic filter bank which can be used in order to mount the both of AAC ELD algorithm or AAC and AAC ELD algorithm. Step concerning the decoder simply the encoder is opposite.
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