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How to test the sound quality of the stereo?


When we are buying a stereo, we always need to test the sound quality of the stereo, and we do not have professional test tools or accurate instruments, then we shouldHow to test the sound quality in a simple way?

1. bass part

The bass effect of the speaker can be said to be a very important part of the overall sound quality. It is directly related to the shock effect of the fullness of the sound effect. For the performance requirements of the speaker using the bass unit, we also conduct the following tests

Put a glass of water on the side of the speaker, the speaker with good bass effect can cause the vibration of the cup, and the water in the cup also ripples. The better the bass effect, the more obvious the effect and the longer the time.

PS: The more real the weapon sound and explosion sound effect, the better the shock effect.

2. midrange

For most of the speaker products, it is difficult to distinguish the sound quality. And his main function is to produce a sense of reality. The test of the midrange part is to watch a multi-channel movie (PS: that is, the kind of two voices played together)

3. treble part

The treble effect of the speaker is generally very intuitive. For example, singing and some special electronic sound effects, and even some extreme sounds beyond the hearing range. How do we judge in the face of this test? Use some high-pitched vocals to feel, such as Vesta's CD;

  Software Testing:

The first step is to download the audio 100 audio tester audio signal generator software. As shown in the figure

The second step is to set up the software, click Settings, select the number of plays, then select the items to be tested in the test list, and click "Play" to test.

The third step is to test the 1khz positive wave to determine whether the band is normal (that is, whether it can be played normally, the same below). Usually, the parameters given in the audio equipment are below 1khz. Therefore, you can click to test first.

The fourth step is to test the low frequency. The low frequency is mainly 25hz, 31.5hz, 40hz, 50hz and 63hz. These are the lower reproduction limits of many sounds. If the sounds fall sharply in the selected low frequency, this shows that the lower reproduction limit of the sounds is the low frequency you choose.

The fifth step, which is more important, is the 80 to 160hz test. This test can determine the upper frequency limit of the audio subwoofer. The sound at the frequency is mainly the thick feeling of music. When the sound performs well there, the timely test is not satisfactory, and the sound will not lack bass. On the contrary, there is weakness.

The sixth step is the 300~500hz test. The purpose of this test is to test the thickness and strength of the human voice. At this time, if the effect is good, the human voice is loud and clear, while if the performance is not good, the voice is weak and turbid.

The seventh step, 2~4khz test, the purpose of this section of the test is to test the level of music, generally should not be attenuated. The attention of this paragraph is that 4khz should not be prominent, otherwise the girls' dental sounds are too heavy.

The eighth step, 3~5khz test, the purpose of this test is to test the division point of the treble unit and bass frequency division of the binary speaker, commonly known as the frequency division point. If the fluctuation in this frequency band is too large, there is a problem in the adjustment of the frequency divider.

The ninth step, the test of 8~12khz treble area, the test of the ascending section is the test of the appeal and vitality of the sound box level and color. If the playing effect is good, the expression effect mentioned in the appeal will have a good performance.

The tenth step, 16~20khz test, many speakers can not play the band, will say silent, if older, will lack the paragraph, the sound will lack of noble power.

Step 11, positive wave scanning, through which you can quickly judge where the frequency problem occurs.

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