Data transmission method and device based on audio interface
A data transmission method and a technology of a data transmission device, which are applied in the field of data transmission, can solve problems such as low reliability and high cost, and achieve the effects of improving work reliability, strong confidentiality, and wide application
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[0030] The present invention will be further elaborated below with reference to the accompanying drawings.
[0031] see figure 1 According to an audio interface-based data transmission method provided by the present invention, the decoded signal is sent through the audio interface, and / or the encoded second audio signal is sent through the audio interface.
[0032] Further, the decoding process includes:
[0033] Step 101, performing audio processing on a received first audio signal to obtain a first square wave signal.
[0034] Step 102: Sampling and sending the first square wave signal at a sampling rate to obtain a first discrete signal.
[0035] Step 103, detect the information header and synchronous character of the first discrete signal; if the information header and synchronous character are detected, decode the information body of the first discrete signal according to the audio decoding protocol to obtain a decoded signal.
[0036] Encoding processing includes:
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