An audio multi-carrier modulation and demodulation device and system
A technology of multi-carrier modulation and demodulation device, applied in phase modulation carrier system, ultrasonic/sonic/infrasonic transmission system, transmission system, etc., can solve the problem of low demodulation compatibility, slow transmission rate, and inconsistent frequency response characteristics of intelligent terminals and other problems, to achieve the effect of improving the transmission rate and improving the compatibility
Active Publication Date: 2019-04-12
NATIONZ TECH INC
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[0002] As wireless audio is used as a channel for data communication, more and more peripheral devices of smart platforms, such as wireless audio keys, wireless audio card readers, etc., are currently commonly used in single-carrier applications. Due to the frequency response characteristics of smart terminals Inconsistency and low frequency lead to the use of single carrier for data modulation, low demodulation compatibility, and slow transmission rate
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] See figure 1 as shown, figure 1 It is a structural schematic diagram of an audio multi-carrier modulation and demodulation device according to an embodiment of the present invention. Such as figure 1 As shown, the audio multi-carrier modulation and demodulation device 1 disclosed in this embodiment includes: an audio input module 10, a main control module 20 and an audio output module 30; wherein, the main control module 20 is connecte...
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Disclosed are an audio multi-carrier modulation and demodulation apparatus and a system. The audio multi-carrier modulation and demodulation apparatus comprises: an audio input module, an audio output module and a main control module, the main control module being connected to the audio input module and the audio output module respectively, wherein the audio input module comprises an analogue input module and at least one path of a demodulation module, the demodulation module comprises an IIR filter module used for completing multi-carrier filtering and filtering out data in a non-frequency band and a PSK demodulation mechanism module used for realising a PSK demodulation mechanism. By means of the method above, the present invention can improve a transmission rate and promote compatibility.
Description
technical field [0001] The invention relates to the technical field of audio multi-carrier modulation and demodulation communication, in particular to an audio multi-carrier modulation and demodulation device and system. Background technique [0002] As wireless audio is used as a channel for data communication, more and more peripheral devices of smart platforms, such as wireless audio keys, wireless audio card readers, etc., are currently commonly used in single-carrier applications. Due to the frequency response characteristics of smart terminals Inconsistency and low frequency lead to data modulation and demodulation compatibility using a single carrier, and slow transmission rate. Contents of the invention [0003] The invention provides an audio multi-carrier modulation and demodulation device and system, which can realize modulation and demodulation of data multi-carriers, increase transmission rate and enhance compatibility. [0004] The present invention provides...
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IPC IPC(8): H04B11/00H04L27/20H04L27/22
CPCG06F21/33H04B11/00
Inventor 王根平
Owner NATIONZ TECH INC