1. Spanias, A., Painter, T., Atti, V.: Audio Signal Processing and Coding. Wiley, Hoboken (2007)
2. Valin, J.-M., Maxwell, G., Terriberry, T., Vos, K.: High-quality, low-delay music coding in the opus codec. In: AES 135th Convention (2013)
3. Vos, K., Sørensen, K.V., Jensen, S.S., Valin, J.M.: Voice coding with opus. In: AES 135th Convention (2013)
4. Chu, W.C.: Speech Coding Algorithms: Foundation and Evolution of Standardized Coders. Wiley, Hoboken (2003)
5. Sercov, V., Petrovsky, A.: Neural network quantizer of the parameters of the low bitrate vocoder with “speech + noise” speech formation model. In: Proceedings of the 4th International Conference “Digital signal processing and its applications”, pp. 426–428 (2002)