This paper describes a Sub Band coding scheme for wideband speech signal. In this analyzed coder, band splitting approach is used. The lower band speech is encoded with ITU-T G.729E, which is known as a high-quality narrow band speech coder at 8/11.8 ...
This paper describes a Sub Band coding scheme for wideband speech signal. In this analyzed coder, band splitting approach is used. The lower band speech is encoded with ITU-T G.729E, which is known as a high-quality narrow band speech coder at 8/11.8 kbps. Since the encoding of the lower band is independent of upper band signal, the output speech of the decoder can be selected to be narrowband or wideband according to the channel conditions.
Possible wideband applications include high-quality audio conferencing, digital AM broadcasting and third-generation wireless communications