Automatic monitoring method and automatic monitoring device of simulated broadcast signals

A technology of analog broadcasting and automatic monitoring, applied in the field of communication

Active Publication Date: 2013-06-05
ACAD OF BROADCASTING SCI SARFT
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Problems solved by technology

The automatic identification of broadcast audio signal content has always been a problem in the broadcasting industry. Traditionally, broadcast station monitors face many monitored audio signals and can only judge whether the signal broadcast is normal by loop monitoring and observing the level display jump. Serious broadcast accidents may occur when the signal source is replaced by an external signal without the monitor being aware of it

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  • Automatic monitoring method and automatic monitoring device of simulated broadcast signals
  • Automatic monitoring method and automatic monitoring device of simulated broadcast signals
  • Automatic monitoring method and automatic monitoring device of simulated broadcast signals

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no. 1 example

[0065] In the first embodiment of the present invention, an automatic monitoring method for analog broadcast signals, such as figure 2 shown, including the following specific steps:

[0066] Step S101, embedding the program source identifier in the form of a digital audio watermark into the analog broadcast audio program stream in AES / EBU format or analog audio left and right channel format output by the studio of the analog audio broadcasting system.

[0067] In the present invention, the program source identification, as digital audio watermark information, can be represented by a 9-bit binary digital signal. These 9-bit numbers can represent the combination of the program source and program type of the analog broadcast audio program stream, and the upper 7 bits can represent the program source. For which radio station, the lower 2 bits can indicate the type of program being broadcast. For example, the news program of Beijing People's Broadcasting Station can be expressed ...

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Abstract

The invention discloses an automatic monitoring method and an automatic monitoring device of simulated broadcast signals. The automatic monitoring method comprises the steps: implanting source program identification a simulated broadcast audio frequency program stream output by a studio in a audio frequency watermark form, synchronously extracting the source program identification from the simulated broadcast audio frequency program stream in a monitoring point in the process of transmitting the simulated broadcast audio frequency program stream implanted with the source program identification, comparing the source program identification extracted from the simulated broadcast audio frequency program stream with accurate source program information, and reporting error when the source program identification extracted from the simulated broadcast audio frequency program stream is not confirm to the accurate source program information. According to the automatic monitoring method and the automatic monitoring device of the simulated broadcast signals, the simulated broadcast audio frequency program stream is implanted in the source program identification, attack and distortion by an audio processor are resisted, and no change is done to a broadcast framework of an existing simulated audio broadcast system, a plurality of monitoring points is arranged in the simulated audio broadcast system, under the condition that the listening effect of a wide audience is uninfluenced, whether the simulated broadcast audio frequency program streams broadcasted by different transmission positions are right or not is automatically monitored and error information is reported.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an automatic detection method and device for analog broadcast signals. Background technique [0002] Digital watermarking technology is a branch of information hiding technology, which has been widely used in the field of network audio and video in recent years, mainly for intellectual property protection and anti-counterfeiting of digital media products. Digital audio watermarking technology refers to loading hidden marks to be embedded into audio data by means of digital signal processing, such as program identification and user identification number. Such marks are usually invisible and imperceptible. Only through special Watermark detectors are able to extract. [0003] Digital audio watermarking technology uses the sensitivity of the HAS (Human Audio System) model to audio signals, embeds the watermark signal into the audio program stream, and detects and extracts di...

Claims

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Application Information

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IPC IPC(8): H04H20/14H04H60/23G10L19/018H04S7/00H04S1/00
Inventor 邸娜高鹏张鹏王鹏军李锦文杨明
Owner ACAD OF BROADCASTING SCI SARFT
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