Abstract
An audio signal often consists of quasistationary episodes, each including a number of tonal frequency components, which are frequently interrupted by dramatic transients. To achieve optimal energy compaction and thus coding gain, a filter bank with fine frequency resolution is necessary to resolve the tonal components or fine frequency structures in quasistationary episodes. But this filter bank is an ill fit for transients which often last for no more than a few samples, hence require fine time resolution for optimal energy compaction. Therefore, filter banks with both good time and frequency resolution are needed to effectively code audio signals.
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You, Y. (2010). Transients. In: Audio Coding. Springer, Boston, MA. https://doi.org/10.1007/978-1-4419-1754-6_11
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DOI: https://doi.org/10.1007/978-1-4419-1754-6_11
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