[Home Theater Network HDAV.com.cn] When the audio-visual environment has serious standing wave, resonance, and other acoustic defects, these defects seriously affect the sense of hearing. In severe cases, the audio-visual room cannot be used normally. How can we accurately identify and solve these problems? Today we will explain the practical operation of the XTZ acoustic tester and find the solution to the room standing wave resonance frequency.
First, when we connect the device, open the software interface, the first step, select the room mode
Then click on the test button
An option window pops up, you can select a single point test or check the three-point test according to the test requirements.
Then click on the test option and place the test mic according to the location specified in the image.
In order to ensure the accuracy of the test, it is necessary to observe whether the SPL sound pressure meter on the left side reaches 90dB. If it does not reach 90dB, please increase the sound pressure level. If it is canceled, retest it. It is recommended not to exceed 95dB to avoid hearing damage.
If the test sound pressure is close to 90dB, continue testing
Select the three-point test in the middle of the test to move the position of the test wheat, move the test wheat position, click the test
After the test is completed, the system will generate a test result chart (printable)
Below we will analyze the test results
The Found Room on the right side will display the room resonance frequency of 62Hz (Mode) and the frequency of 128HzG (dB) that requires EQ processing. The column shows the parameter values ​​that need to be processed accurately.
Properly address and resolve these issues based on identified issues
Double click on the right color spectrum to enlarge the amplitude of the low frequency attenuation in the room.
The color represents the sound pressure amplitude, the vertical axis shows each frequency, and the horizontal axis shows the time.
The concept of spectrum is to show the decay time as a function of time and frequency, and a non-uniform spectrum of frequencies indicates an uneven frequency response in the room.
Checking the Result on the right will show the results after processing the resonance frequency and EQ.
Click Show1 to record the test results. Up to 4 test results can be recorded at the same time for easy comparison.
More fresh and fun home theater information, please pay attention to home theater network http:// (WeChat: cnhifi), the country's most influential home theater audio player interactive media website.
Note: This article is transferred from audio and video acoustic design. The article is an independent view of the author and does not represent the position of the home theater network.
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