The bass effect of the speaker can be said to be a very important part of the overall sound quality, which is directly related to the shocking effect of sound fullness. For the performance requirements of speakers using bass units, the following tests were conducted.

Put a glass of water beside the speaker. A sound box with good bass effect can cause the vibration of the cup, and everyone in the cup will ripple. The better the bass effect, the more obvious the effect and the longer the time.

PS: The more realistic the reproduction of weapon sound and explosion effect, the better the shocking effect.

Second, the alto part.

For most speaker products, it is difficult to distinguish the sound quality in the midrange. His main role is to create a sense of reality, and the test of the midrange part is to watch multi-channel movies (PS: the kind where two voices are played together)

Third, the high-pitched part

Generally speaking, the high-pitched effect of speakers is very intuitive, such as singing and some special electronic sound effects, and even some extreme sounds beyond the hearing range. Facing this test, Bian Xiao's method is to feel it with some high notes, such as Vesta's CD.

Fourth, the software audition:

Step 1: Download the software of audio signal generator of audio 100 audio tester.

Step 2: Set the software, click Settings, select the number of times to play, then select the item to be tested in the test list, and click Play Test.

Step 3: 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 audio equipment are below 1khz. So you can click test first.

The fourth step is to test the low frequencies, mainly 25hz, 3 1.5hz, 40hz, 50hz and 63hz. These are the lower playing limits of many audio. If the audio suddenly drops at the selected low frequency, it means that the lower playing limit of the audio is the low frequency you selected.

The fifth and most important step is the test from 80 to 160hz. This test can determine the upper frequency limit of the subwoofer. The sound in frequency is mainly the heavy feeling of music. If the sound performs well there and the previous test is not satisfactory in time, then the sound will not lack bass. On the contrary, I am weak.

Step 6: Test at 300 ~ 500 Hz. The purpose of this test is to test the thickness and strength of vocal performance. At this time, if the effect is good, the vocal performance will be loud, and if the performance is not good, the voice will be weak and turbid.

Step 7, 2~4khz test, the purpose of this test is to test the level of music, which is generally not suitable for attenuation. Note in this paragraph that 4khz cannot be highlighted, otherwise the girl's teeth sound is too heavy.

Step 8: 3~5khz test. The purpose of this test is to test the dividing point between the high-pitched unit and the low-pitched frequency of the dichotomous speaker, commonly known as the crossover point. If this frequency band fluctuates too much, it means that there is something wrong with the adjustment of the frequency divider.

The ninth step is the test of 8~ 12khz high-pitched zone. The test of this rising section is a test of the appeal and vitality of the level and color of the speaker. If the playback effect is good, the expression effect mentioned in the appeal will have a good performance.

Step 10, 16~20khz test, many speakers can't play this band, which means you are mute, or you may be old. Without this passage, the voice lacks noble power.

The eleventh step, positive wave scanning, can quickly determine where the frequency is wrong.