Patent ID: 7869891
Filing Date: 2011-01-11
Classification: G10L

Abstract:
1. A method of generating a bitstream of an audio signal using an encoded audio signal and encoding information, the method comprising: generating a flag indicating whether the encoded audio signal is a multichannel audio signal; determining a possible maximum frame length of the bitstream to determine a number of bits assigned to data having frame length information according to the determined possible maximum frame length; generating frame length data of the bitstream as signal data encoded with the determined number of bits; generating a bitstream header including the generated flag; and generating the bitstream using the generated bitstream header, the generated frame length data, and the encoded audio signal, wherein the number of bits assigned to data having frame length information is variably set based on a number of channel signals included in the encoded audio signal to provide a non-limited frame length for the bitstream for the multichannel audio signal.