An apparatus for coding of variable bit-rate wideband speech and audio signals, and a method thereof

The present invention relates to a wideband speech and audio coding apparatus and method for transmitting in the encoding of the wideband speech and audio of VBR (variable bit rate), to determine the effective bit rate by the audio sound. Wideband Speech and Audio Coding (wideband speech and audio coding) device of a variable bit rate according to the present invention, a) the audio voice and classification means for classifying each of the signal input to the codec as a speech or audio signal; b) if the classification of the input signal is a voice signal, the narrow-band encoding means for performing narrow-band coding; c) if the input signal is classified audio signals, and low-bit rate adjustment means for adjusting each of the encoding bit rate of the high-band; And d) a wideband coding means for performing coding to the adjusted bit rate in the bit rate adjustment means. By wideband speech encoder of the variable bit rate according to the present invention allocates coding bits to the high-band in the low bit rate, it is possible to also prevent the deterioration of the sound quality, if included, the audio signals to the input signal, by effectively changing the bit rate VBR the can improve the performance of wideband speech encoder. A variable bit rate, encoding, broadband, narrowband, voice, audio