Abstract:
Provided are an extended Simple Aggregation Format (SAF) packet to support voluminous media data and a method of generating the extended SAF packet. The extended SAF packet includes an SAF access unit including an SAF fragment unit obtained by dividing the voluminous media data into a data size suitable for transmission through an SAF packet and a field that provides information about the type of the SAF fragment unit, and an SAF packet header including a field that provides information about whether the SAF access unit carries the SAF fragment unit. Thus, it is indicated that the SAF packet carries the SAF fragment unit from information of the SAF packet header, and the type of the SAF fragment unit, a sequence number of the SAF fragment unit and a total access unit length from information of the SAF access unit.
Abstract:
Disclosed are encoding and decoding apparatuses and methods based on variable sub-band analysis. The encoding method based on variable sub-band analysis includes: generating down-mixed signals out of inputted multiple audio objects and encoding the down-mixed signals; transforming the multiple audio objects into a frequency domain to thereby produce frequency-domain signals; dividing a sub-band of the frequency-domain signals into variable sub-bands based on a characteristic of the sub-band and generating variable sub-band information including information on the variable sub- bands; generating parameter information used for recovering the down-mixed signals based on the variable sub-bands; and encoding the variable sub-band information and the parameter information.
Abstract:
A three-dimensional audio signal processing apparatus using a Head Related Transfer Function (HRTF) includes an audio decoder for decoding audio data to restore original audio signals and a three-dimensional audio generator for generating three-dimensional signals corresponding to the audio signals restored by using the HRTF modeled according to physical characteristics of an user, wherein the HRTF modeled according to physical characteristics of an user is an individualized HRTF.
Abstract:
A multi-object audio encoding and decoding apparatus supporting a post downmix signal may be provided. The multi-object audio encoding apparatus may include: an object information extraction and downmix generation unit to generate object information and a dowmnix signal from input object signals; a parameter determination unit to determine a downmix information parameter using the extracted downmix signal and the post downmix signal; and a bitstream generation unit to combine the object information and the downmix information parameter, and to generate an object bitstream.