Compression Artifacts in Perceptual Audio Coding

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Audio Codec Enhancement with Generative Adversarial Networks (2020, methodology): “For example, quantization noise in the quiet region prior to a transient event in a decoded audio signal can be perceived as pre-echoes [1],[2] at the attack portions of”
Studying the behaviour and sensory ecology of marine mammals using acoustic recording tags: a review (2009, background): “Higher compression ratios are possible with lossy compression algorithms such as MP3 (e.g. c = 8), but these introduce artefacts in the recording that may reduce the value of the data (Liu et al 2008).”
Temporal Noise Shaping with Companding (2018, methodology): “One option is to employ the TNS tool, but it is well-known that TNS introduces artificial pre- and post-aliasing artifacts [15] due to the time-domain aliasing of MDCT.”