Stanzione & Kim, LLP
Adaptive encoding and decoding with forward linear prediction
An adaptive encoding method includes splitting an input signal into a low-frequency band signal and a high-frequency band signal; performing forward adaptive linear prediction on the low-frequency band signal and thus filtering the low-frequency band signal; selectively performing backward adaptive linear prediction or long-term prediction on the filtered low-frequency band signal according to the analysis result of the low-frequency band signal; transforming the low-frequency band signal, on which backward adaptive linear prediction or long-term prediction has been performed, into a signal in a frequency domain and quantizing the signal; and encoding the high-frequency band signal using the low-frequency band signal, on which backward adaptive linear prediction or long-term prediction has been performed, or the quantized signal. Therefore, compression efficiency of both speech and music signals can be enhanced, and a robust compression method can be provided for various audio contents at a low bit rate.
Samsung Electronics Co., Ltd.
G G G G G G
G10L G10L G10L G10L G10L G10L
additional additional additional inventional additional inventional
Jung-hoe Chang-yong Ki-hyun Eun-mi
Kim Son Choo Oh