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A wireless microphone receiver and a method in the wireless microphone receiver

A wireless microphone and receiver technology, applied in the direction of transducer circuits, sensors, microphones, etc.

Active Publication Date: 2019-05-07
BEKEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the frequency deviation between transmitter and receiver is usually greater than 20ppm

Method used

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  • A wireless microphone receiver and a method in the wireless microphone receiver
  • A wireless microphone receiver and a method in the wireless microphone receiver
  • A wireless microphone receiver and a method in the wireless microphone receiver

Examples

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Embodiment Construction

[0016] Various aspects and examples of the invention will now be described. The following description provides specific details for a thorough understanding and implementation of the illustrative examples. However, it will be understood by those skilled in the art that the present invention may be practiced without many of these details.

[0017] Also, some well-known structures and functions may not be shown or described in detail to avoid unnecessarily obscuring the related description.

[0018] The terms used in the description set forth below are intended to be interpreted in their broadest reasonable manner, even when used in conjunction with the detailed description of certain specific examples of the invention. Certain terms may even be emphasized below, however, in this Detailed Description section, any term that is intended to be interpreted in any limiting manner will be explicitly and specifically defined.

[0019] Figure 1A is a diagram illustrating a wireless d...

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Abstract

The wireless microphone receiver includes a phase locker for locking a phase of audio data successfully received from the microphone transmitter; The calculator used for calculating the frequency deviation between the locking phase of the microphone receiver and the phase of the microphone transmitter; The calibrator used for calibrating the frequency deviation if the absolute value of the frequency deviation is greater than a first preset threshold value, using a first step to calibrate the frequency deviation if the absolute value of the frequency deviation is less than or equal to the firstpredetermined threshold value, using a second step to calibrate the frequency deviation if the absolute value of the frequency deviation is less than or equal to the first predetermined threshold value, and completing the calibration if the calibrated frequency deviation is less than the second predetermined threshold value; A bufferused for buffering audio data received from the microphone transmitter, wherein the calibrator further adjusts the amount of data stored in the buffer; The microphone receiver also outputs buffered audio data.

Description

technical field [0001] The present application relates to digital circuits and more particularly, but not exclusively, to wireless microphone receivers and methods in wireless microphone receivers. Background technique [0002] Traditional wireless microphone systems use analog modulation techniques (such as frequency modulation or FM) that are not critical to the frequency offset between the transmitter and receiver. However, this kind of system is susceptible to interference and cannot realize the requirement of high-fidelity sound transmission. [0003] The digital wireless microphone system uses a completely digital modulation method, so the system is not susceptible to external interference, and audio information will not be lost during transmission, fully meeting the high-fidelity requirements. However, digital systems place high demands on the frequency deviation of the transceiver. For stable transmission, the deviation is required to be less than one part per mill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/033H04L7/00
CPCH04B1/20H04R3/00H04R29/004H04R2410/00H04R2420/07H04B2001/1072H04B1/16H04R1/227H04R1/265
Inventor 不公告发明人
Owner BEKEN CORP
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