Sughrue Mion, PLLC
Method and apparatus for encoding and decoding audio/speech signal
Provided is a method of encoding an audio/speech signal, the method including determining a variable length of a frame, that is, a processing unit of an input signal in accordance with a position of an attack in the input signal; transforming each frame of the input signal to a frequency domain and dividing the frame into a plurality of sub frequency bands; and, if a signal of a sub frequency band is determined to be encoded in the frequency domain, encoding the signal of the sub frequency band in the frequency domain, and if the signal of the sub frequency band is determined to be encoded in a time domain, inverse transforming the signal of the sub frequency band to the time domain and encoding the inverse transformed signal in the time domain. According to the present invention, the audio/speech signal may be efficiently encoded by controlling time resolution and frequency resolution.
SAMSUNG ELECTRONICS CO., LTD.
G G
G10L G10L
inventional inventional
Ki-hyun Eun-mi Chang-yong Kang-eun Jung-hoe Ho-sang
Choo Oh Son Lee Kim Sung