Calibration system for signal measurement and its calibration method

A signal measurement and correction method technology, which is applied in the field of signal processing, can solve problems such as distortion of measurement results, interference of playback signal measurement results, and influence on dual-channel balance effects, to achieve the effect of eliminating interference and improving accuracy

Active Publication Date: 2022-08-02
ACER INC
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Problems solved by technology

[0003] However, the environment in which the user is located is not in a quiet anechoic room, and the measurement results of the broadcast signal may be disturbed by external sounds
These interferences will distort the measurement results, and the distortion will further affect the effect of the two-channel balance

Method used

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  • Calibration system for signal measurement and its calibration method
  • Calibration system for signal measurement and its calibration method
  • Calibration system for signal measurement and its calibration method

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Embodiment Construction

[0037] figure 1 It is a schematic diagram of a calibration system 1 for signal measurement according to an embodiment of the present invention. Please refer to figure 1 , the calibration system 1 includes but is not limited to a speaker device 10 , a radio device 30 and a processing device 50 .

[0038] The speaker device 10 may be a speaker (speaker), a loudspeaker, or the like for playing sound.

[0039] The sound pickup device 30 may be a microphone (eg, dynamic, condenser, electret condenser, etc.) or other electronic devices that can receive sound waves and convert them into sound signals.

[0040] The processing device 50 may be a desktop computer, a laptop computer, a smart phone, a tablet computer, or a server. The processing device 50 includes at least a processor (for example, a central processing unit (CPU), or other programmable general-purpose or special-purpose microprocessors (Microprocessors), digital signal processors (DigitalSignal Processors, DSPs) ), Fi...

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Abstract

Embodiments of the present invention provide a signal measurement calibration system and a calibration method thereof. In this method, the transmit signal and the receive signal are divided into several transmit signal groups and several receive signal groups respectively according to the time length. The received signal is related to the signal received after the transmission signal is sent, and the transmission signal is a periodic signal. According to the correlation between the transmitted signal groups and the received signal groups, several evaluation groups are selected from the received signal groups. This correlation corresponds to the delay between the transmitted signal and the received signal. The signal energy of the received signal is determined according to the signal energy of these evaluation groups. Thereby, the accuracy of the measurement signal can be improved.

Description

technical field [0001] The present invention relates to a signal processing method, in particular to a signal measurement calibration system and its calibration method. Background technique [0002] In order to achieve the effect of binaural balance, the prior art measures the binaural energy state of the sine wave at the center frequency of each frequency band, and then defines the appropriate target gain for each frequency according to the characteristics of the sound field, and adjusts the binaural energy respectively. The equalization (EQ) of the channels is used to approximate the target gain, thereby achieving the effect of two-channel balance. [0003] However, the environment where the user is located is not in a quiet anechoic room, and the measurement result of the playback signal may be disturbed by external sounds. These disturbances will distort the measurement results, and the distortion will further affect the effect of the two-channel balance. SUMMARY OF T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04S7/00H04S1/00
CPCH04S7/301H04S7/00H04S1/00
Inventor 杜博仁张嘉仁曾凯盟
Owner ACER INC
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