Speech receiving apparatus, and speech receiving method

To the audio receiver according to the present invention, low to restore the low-band speech signal of the previous frame is lost from the top frame of the band PLC module and a synthesis filter; To restore a high-band speech signal of the previous frame is lost from the top frame of the high band PLC module; Converter for converting the low-band speech signal into a frequency band; SBR unit for generating at least extended MDCT coefficients from the low-band speech signal converted by the conversion section, as the information for the high-band speech signal; Smoothing unit for smoothing the extension MDCT coefficients; Inverse conversion unit reversely converts the screen is extended MDCT coefficient smoothed in the smoothing in the time domain; And the low-band speech signal and a highband speech signal restored by the inverse transformation is the inverse transformation unit are combined to be included additional synthesis to output a wide-band speech signal. According to the present invention, it is possible to obtain a better speech quality by using bandwidth extension technique, even when packet loss.