Inverse Decoding of PCM A-law and µ-law

Cuccovillo L, Aichroth P. Inverse Decoding of PCM A-law and µ-law. In: AES Conference: 2019 AES International Conference on Audio Forensics. Audio Engineering Society; 2019. Paper 21. Available from: https://aes.org/publications/elibrary-page/?id=20472

@inproceedings{Cuccovillo2019_20472,
  author = {Cuccovillo, Luca and Aichroth, Patrick},
  title = {{Inverse Decoding of PCM A-law and µ-law}},
  booktitle = {AES Conference: 2019 AES International Conference on Audio Forensics},
  note = {Paper 21},
  year = {2019},
  month = jun,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20472}
}

TY  - CPAPER
TI  - Inverse Decoding of PCM A-law and µ-law
AU  - Cuccovillo, Luca
AU  - Aichroth, Patrick
T2  - AES Conference: 2019 AES International Conference on Audio Forensics
M1  - Paper 21
PY  - 2019
DA  - 2019/06/06
UR  - https://aes.org/publications/elibrary-page/?id=20472
PB  - Audio Engineering Society
LA  - en
AB  - In this paper, we present a new approach for detecting traces of PCM A-law and PCM µ-law encoding within 16-bit PCM content. For both codecs, no previous detection approaches have been developed, despite the fact that they are often applied for land-line phone calls. An evaluation of our method has been carried out using the publicly available Librispeech ASR Corpus as a basis. The detection of both codecs, using analysis windows of 0.1s, is highly reliable even if automatic dithering noise is present, with an Equal Error Rate (EER) of 0% for PCM A-law and 1.05% for PCM µ-law.
ER  -