Stereo audio encoding method and device, audio stream decoding method and device
A coding method and stereo sound technology, applied in the field of coding and decoding audio data, can solve complex and expensive problems
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[0080] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0081] figure 1 is a block diagram of an encoding device according to a preferred embodiment of the present invention;
[0082] refer to figure 1 , the encoding device encodes audio data into fewer bits by eliminating redundant data between channels, and includes a transformation unit 11 , a psychoacoustic unit 12 , a quantization unit 13 , a bit packing unit 14 and a redundant information elimination unit 15 .
[0083] The transformation unit 11 transforms audio samples obtained from a plurality of channels. In more detail, the transformation unit 11 receives Pulse Code Modulation (PCM) audio data as a time-domain audio signal, and transforms the signal into a frequency-domain signal with reference to information on a psychoacoustic model provided by the psychoacoustic unit 12 . When the difference between the characteristics of the audio sig...
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