Apparatus and Method for Highband Coding of Splitband Wideband Speech Coder

1. Technical Field of the invention defined in the claims The present invention will on the high-band speech encoding apparatus and a method of wideband speech encoder. 2. The invention attempts to solve the technical challenges The present invention is a low-band speech encoding information and TNS (Temporal Noise Shaping) by and using the techniques coding a band speech landscape arising from the high-band speech encoding process, - high-band in which to reduce the echo overt, wideband speech encoder that aims to provide a speech coding apparatus and method. 3. Resolution of the subject matter of the invention, The present invention is a low-band encoding information and by using the high-band speech signal for coding a band speech encoding apparatus in a wideband speech coder, domain conversion means for converting the input high-band speech signal into a frequency domain; Linear prediction order determination means for determining a linear prediction order by using the pitch information of the low-band speech signal as the low-band encoding information; Linear prediction analysis means for analyzing the high-band speech signal converted into the frequency domain in accordance with the determined linear prediction order to generate the linear prediction coefficients; A linear predictive coefficient quantization means for as the low-band encoding information to quantize the linear prediction coefficients using the synthetic low band signal; And dequantizing the quantized linear prediction coefficients to obtain a residual signal, including a residual signal quantizing means for quantizing the residual signal. 4. An important use of the invention, The invention yiyongdoem like voice coding. Split-band, broadband, high-bandwidth voice, encoding, decoding, the low band voice