CPC G10L 19/008 (2013.01) [G10L 19/02 (2013.01); G10L 19/04 (2013.01); G10L 19/12 (2013.01); G10L 19/20 (2013.01); G10L 19/00 (2013.01)] | 18 Claims |
1. An encoding method of an input signal performed by at least one processor, the encoding method comprising:
determining a frame of the input signal whether the frame is a speech frame or an audio frame;
encoding the input signal in a speech encoder based CELP coding scheme when the frame is the speech frame,
encoding the input signal in an audio encoder based MDCT coding scheme when the frame is the audio frame; and
generating a bitstream based on an encoded input signal, and
wherein the input signal is processed by using information for compensating a change of a frame unit between the speech frame and the audio frame when a switching occurs between the speech frame and the audio frame in a decoding process about the input signal,
wherein the information is included the bitstream,
wherein the input signal is encoded with respect to a core band,
wherein the core band is a low frequency band which is not expanded in a frequency band of the input signal,
wherein a high frequency band is generated from the core band based on a frequency band expander in a decoding process.
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