Method and system for processing audio surround signal
A signal and signal processing technology, applied in information recording media, receiving systems, transmission systems, recording devices, recording surround signals, processing surround signals, devices for recording surround signals, and systems for processing surround signals, can solve difficult and accurate problems Problems with decoding, difficulty accurately expressing pan forward or backward motion, limitations, etc.
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no. 1 example
[0048] refer to figure 1 , an AC-3 decoder 1 receives an input digital audio signal in AC-3 format and decodes the input digital audio signal in a known manner into a left signal L, a right signal R, a center signal C, a left surround signal SL, a right surround signal SR, and a subwoofer signal. Usually, the left signal L, the right signal R, the center signal C, the left surround signal SL, the right surround signal SR, and the subwoofer signal are all analog. The left signal L, the right signal R, the center signal C, the left surround signal SL, and the right surround signal SR constitute a set of 5-channel signals. The left surround signal SL and the right surround signal SR are rear signals, while the left signal L and right signal R are front signals. The frequency of the subwoofer signal can vary within a range less than or equal to 100 Hz. Subwoofer signals are not used in subsequent stages.
[0049] Following the AC-3 decoder 1 is a signal processing circuit 2 . ...
no. 2 example
[0081] refer to Figure 5 , the AC-3 decoder 1 receives an input digital audio signal in AC-3 format and decodes the input digital audio signal in a known manner into a left signal L, a right signal R, a center signal C, A left surround signal SL, a right surround signal SR, and a subwoofer signal. Usually, the left signal L, the right signal R, the center signal C, the left surround signal SL, the right surround signal SR, and the subwoofer signal are all analog. The left signal L, the right signal R, the center signal C, the left surround signal SL, and the right surround signal SR constitute a set of 5-channel signals. The left surround signal SL and the right surround signal SR are rear signals, while the left signal L and right signal R are front signals. The frequency of the subwoofer signal can vary within a range less than or equal to 100 Hz. Subwoofer signals are not used in subsequent stages.
[0082] Following the AC-3 decoder 1 is a signal processing circuit 2A...
no. 3 example
[0113] refer to Figure 7, the personal computer 6 includes an optical disc drive 4, a network terminal 5, a CPU 6a, a RAM 6b, a data converter 6c, an audio interface 6d, a keyboard interface 6e, and a keyboard 6f. The optical disc drive 4, the network terminal 5 and the data converter 6c are connected by a bus. CPU 6a, RAM 6b, data converter 6c, audio interface 6d, and keyboard interface 6e are connected by a bus. The CPU 6a includes a RAM. The keyboard 6f is connected to the keyboard interface 6e. The audio interface 6d is connected to the speakers 3L and 3R. The network terminal 5 is connected to a communication network such as the Internet (Internet). The network terminal 5 transmits and receives data to and from the communication network according to a known protocol such as "TCP / IP".
[0114] The AC-3 surround signal processing program is stored on a CD. When the optical disc is set in the optical disc drive 4, the personal computer 6 can read out the AC-3 surround...
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