A Low Delay Filter Bank for Audio Coding with Reduced Pre-echoes
نویسنده
چکیده
A low delay filter bank for audio coding is presented. The low delay allows to reduce the length of pre-echoes generated by quantization errors. The structure provides perfect reconstruction and a system delay which can be pre-specified independent of the filter length. A robust algorithm for the design of such filter banks is developed. In an explained example for audio coding the length of the pre-echo is reduced to about one third for a filter bank with 128 equally spaced bands when compared to known filter structures.
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