Abstract: In one embodiment, the method includes receiving an audio data frame having at least one channel. The channel is subdivided into a plurality of blocks, and at least two of the blocks are capable of different lengths. The embodiment further includes obtaining information from the audio signal indicating the subdivision of the channel into the blocks, and decoding the channel based on the obtained information. In one embodiment, the channel is subdivided into the plurality of blocks according to a subdivision hierarchy, the subdivision hierarchy has more than one level, and each level is associated with a different block length.

Abstract: In one embodiment, the method includes receiving audio frame data having at least first and second channel data. The first and second channel data includes a plurality of blocks, where the blocks are classified by a block type. Block information indicating the block type is obtained. The block information corresponds to the first and second channel data being common when the first and second channel data are paired. The first and second channel data is lossless decoded based on the block information.

Abstract: In one embodiment, the method includes receiving audio frame data having at least first and second channel data. The first and second channel data include a plurality of blocks, where the blocks are classified by a block type. The first and second channel data are provided jointly if the first and second channel data are paired with each other. The embodiment further includes obtaining block information indicating the block type, and lossless decoding the first and second channel data based on the block information.

Abstract: In one embodiment, the method includes receiving an audio data frame having at least first and second channels. The first and second channels have been independently subdivided into blocks if the first and second channels are not correlated with each other, and the first and second channels have been synchronously subdivided into blocks if the first and second channels are correlated with each other and difference coding is used. The embodiment further includes obtaining subdivision information from the audio data frame. The subdivision information includes first information and second information. The first information indicates whether the first and second channels are independently subdivided or synchronously subdivided, and the second information indicates how the subdividing is performed. The first and second channels are decoded based on the obtained subdivision information.

Abstract: In one embodiment, the method includes receiving an audio signal having configuration information and multi-channels, and reading an indicator from the configuration information. The indicator indicates whether or not channel mapping information is included in the configuration information. The method further includes reading the channel mapping information from the configuration information if the indicator indicates that the channel mapping information is included in the configuration information. The channel mapping information indicates to which speaker in a reproduction device to map each channel in the audio signal. Channel rearrangement information is read from the configuration information. The channel rearrangement information indicates the rearrangement of the multi-channels. The multi-channels are decoded based on the channel mapping information and channel rearrangement information.

Abstract: In one embodiment, the method includes receiving an audio signal including a prediction residual of a block of digital audio data and coded-coefficient values; and obtaining table index information from the digital audio data. The table index information indicates whether entropy coding of coded-coefficient values is performed, and the table index information further identifies a table from a plurality of tables to select if the table index information indicating that entropy coding of coded-coefficient values is performed. A set of prediction coefficient values is reconstructed from the coded-coefficient values if the table index information indicates that entropy coding of coded-coefficient values is performed.

Abstract: In one embodiment, the method includes receiving the audio signal including at least one block of audio data and configuration information, and reading coding type information from the configuration information. The coding type information indicates an entropy coding scheme used in encoding the audio signal. Partitioning information is read from the configuration information, and the partitioning information indicates whether the block is divided into sub-blocks. The partitioned sub-blocks are decoded based on the entropy coding scheme if the block is divided into sub-blocks.

Abstract: In one embodiment, the method includes receiving audio frame data having at least first and second channel data. The first and second channel data include a plurality of blocks, where the blocks are classified by a block type. The first and second channel data is provided jointly if the first and second channel data are paired with each other. The method further includes obtaining frame length information indicating a length of the audio frame data, and obtaining block information indicating the block type. The block information corresponds to the first and second channel data being common when the channel data are paired. The first and second channel data are lossless decoded based on the frame length information and the block information.

Abstract: In one embodiment, the method includes receiving the audio signal having configuration information and multi-channels, and reading a first indicator from the configuration information. The first indicator indicates whether or not channel mapping information is included in the configuration information. The channel mapping information is read from the configuration information if the first indicator indicates that the channel mapping information is included in the configuration information. The channel mapping information indicates to which speaker in a reproduction device to map each channel in the audio signal. A second indicator is also read from the configuration information. The second indicator indicates whether or not channel rearrangement information is included in the configuration information. The channel rearrangement information is read from the configuration information if the second indicator indicates that the channel rearrangement information is included in the configuration information.

Abstract: In one embodiment, the method includes receiving the audio signal including at least one block of audio data and configuration information, and reading coding type information and partitioning information from the configuration information. The coding type information indicates an entropy coding scheme used in encoding the audio signal, and the partitioning information indicates a sub-block partition scheme by which the block is divided into sub-blocks. Sub-block information is read from the block of audio data, and the sub-block information indicates a number of the sub-blocks into which the block is partitioned given the sub-block partitioning scheme. The number of the sub-blocks is determined based on the entropy coding scheme and the sub-block partition scheme. The partitioned sub-blocks are decoded based on the entropy coding scheme.

Abstract: In one embodiment, the method includes receiving audio frame data having at least first and second channel data. The first and second channel data includes a plurality of blocks, where the blocks are classified by a block type. The embodiment further includes obtaining frame length information indicating a length of the audio frame data, and obtaining block information indicating the block type. The block information corresponds to the first and second channel data being common when the first and second channel data are paired. The first and second channel data are lossless decoded based on the frame length information and the block information.

Abstract: In one embodiment, the method includes receiving an audio signal having configuration information and at least one channel, and reading an indicator from the configuration information. The indicator indicates whether or not channel mapping information is included in the configuration information. The channel mapping information is read from the configuration information if the indicator indicates that the channel mapping information is included in the configuration information. The channel mapping information indicates to which speaker in a reproduction device to map each channel in the audio signal. The channel is decoded based on the channel mapping information.

Abstract: In one embodiment, the method includes reading random access information from the audio signal. The random access information indicates whether or not random access operation is allowed in the audio signal. If the random access operation is allowed, the audio signal has a plurality of random access units. A random access unit includes one or more of frames and at least one of the frames is a random access frame. The random access frame is a frame encoded such that previous frames are not necessary to decode the random access frame, and the random access information further indicates a distance between random access frames in frames. The random access frame is decoded based on the random access information.

Abstract: In one embodiment, the method includes receiving audio frame data having at least first and second channel data. The first and second channel data includes a plurality of blocks, where the blocks are classified by a block type. The first and second channel data is provided jointly if the first and second channel data are paired with each other. The method further includes obtaining frame length information indicating a length of the audio frame data, obtaining block information indicating a block type, and lossless decoding the first and second channel data based on the frame length information and the block information.

Abstract: In one embodiment, the method includes receiving audio frame data having at least first and second channel data. The first and second channel data includes a plurality of blocks, where the blocks are classified by a block type. The first and second channel data is provided jointly if the first and second channel data are paired with each other. Block information indicating the block type is obtained. The block information corresponds to the first and second channel data being common when the first and second channel data are paired. The first and second channel data are lossless decoded based on the block information.

Abstract: In one embodiment, the method includes receiving an audio data frame having at least one channel. The channel is subdivided into a plurality of blocks, and at least two of the blocks are capable of having different lengths. The embodiment further includes obtaining indicator information indicating whether determining of a prediction order for each block is allowed, and determining the prediction order from the audio signal indicating the prediction order for each block if the indicator information indicating that determining of the prediction order for each block is allowed. The channel is decoded using the prediction order.

Abstract: In one embodiment, the method includes receiving the audio signal having a plurality of random access units. The random access unit includes one or more frames and at least one of the frames is a random access frame. The random access frame is a frame encoded such that previous frames are not necessary to decode the random access frame. The embodiment further includes reading location information from the audio signal. The location information indicates whether random access unit size information is stored or not in the audio signal. If the random access unit size information is stored, the location information further indicates a location where the random access unit size information is stored in the audio signal. Random access unit size information is read according to the location information. The random access unit size information indicates a distance between random access frames in bytes. The random access units are decoded based on the random access size information.

Abstract: In one embodiment, the method includes receiving an audio data frame having at least first and second channels. The first and second channels are synchronously subdivided into blocks such that the lengths of the blocks into which the second channel is subdivided correspond to the lengths of the blocks into which the first channel is subdivided if the first and second channels are correlated with each other and difference coding is used. The first and second channels are decoded and the subdivided blocks of the first and second channels are interleaved if the first and second channels are synchronously subdivided.

Abstract: In one embodiment, the method includes receiving an audio data frame having at least first and second channels. The first and second channels are independently subdivided into blocks if the first and second channels are not correlated with each other. The first and second channels are decoded, and the subdivided blocks of the first and second channels are not interleaved if the first and second channels are independently subdivided.

Abstract: In one embodiment, a block of audio data is partitioned into N sub-blocks, and a plurality of code parameters s(0), s(1), . . . s(N?1) are determined. The N sub-blocks are entropy encoded using a plurality of entropy codes defined by the plurality of code parameters, and the code parameters are transmitted. The code parameters may be transmitted by directly transmitting s(0) representing the code parameter of the first sub-block, and transmitting a difference s(i)?s(i?1) for i=1, . . . N?1, s(i) representing the code parameter of an ith sub-block following the first sub-block.