Frequency modulation synchronization method, device and system, equipment and storage medium
A synchronous network and audio technology, applied in the direction of broadcasting devices, broadcasting transmission systems, broadcasting system reception, etc., can solve problems such as complex calculations, affecting the quality of audio streams, and difficulty in ensuring the accuracy of time information, so as to reduce the amount of calculations and improve audio transmission quality, effect of reducing impact
Active Publication Date: 2021-06-25
成都德芯数字科技股份有限公司
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[0004]
However, the application of the above method requires FSK modulation and FSK demodulation of the associated audio signaling, which is complex to calculate, and the associated audio signaling is superimposed on the audio stream for encoding and decoding, which affects the quality of the audio stream, and requires complex The indirect calculation of the time information, resulting in the accuracy of the time information is difficult to guarantee
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[0045] The core of the present application is to provide a frequency modulation synchronization method, device, system, equipment, and storage medium, which are used to reduce the difficulty of frequency modulation synchronization, reduce the impact of frequency modulation synchronization operations on audio data, and improve audio transmission quality.
[0046] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0047] figure 1 It is a flowchart of a frequency modulation synchronization method provided by the embodiment of the present appl...
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The invention discloses a frequency modulation synchronization method, device, system, equipment and storage medium. The method comprises the steps that an audio sending end adds time information corresponding to an audio data packet into a frequency modulation information packet after generating the audio data packet; after receiving the frequency modulation information packet, the audio receiving end performs time delay adjustment on the audio stream corresponding to the audio information packet according to the time information in the frequency modulation information packet. The frequency modulation information packet used for recording the information of the frequency modulation synchronization network is adopted to transmit the time information of the audio data, so that channel associated audio signaling does not need to be generated to transmit the time information, that is, the channel associated audio signaling does not need to be coded and decoded, and a decoder of an audio receiving end does not need to obtain global positioning system time to calculate and obtain the time information; And the time information does not need to be superposed into the audio data, so that the calculated amount of decoders of the audio sending end and the audio receiving end is greatly reduced, the difficulty of realizing frequency modulation synchronization is reduced, the influence of frequency modulation synchronization operation on the audio data is reduced, and the audio transmission quality is further improved.
Description
technical field [0001] The present application relates to the technical field of FM synchronous broadcasting, and in particular to a FM synchronization method, device, system, equipment, and storage medium. Background technique [0002] FM simulcasting refers to a form of broadcasting in which two or more transmitters located at different locations use the same frequency to broadcast the same program content. The establishment of the FM synchronous broadcasting network can well solve the problem of using a single frequency for large-scale FM broadcasting. However, due to the different distances of the audio signal from the broadcast control center of the radio station to the exciters of each transmitting station, the different routes of the transmission link, and the different ways of multiplexing and demultiplexing during signal transmission, the audio time of each exciter of each transmitting station is different. There may be a certain difference in delay, and this diffe...
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IPC IPC(8): H04H20/10H04H20/67H04H40/27
CPCH04H20/10H04H40/27H04H20/67Y02D30/70
Inventor 魏作贤李俊
Owner 成都德芯数字科技股份有限公司