Seven performance indicators to measure the sound quality of the speaker
Are there many Baozi who want to buy a speaker but don't know how to choose it, and don't know which indicators to look at to judge the quality of the speaker? As a person who likes to listen to music, besides according to his own needs, he usually looks at the sound quality of the speaker when choosing it. If there are Baozi who can't choose, he can refer to my seven performance indicators below, so that you can better distinguish the quality of the speaker, less detours on the way to buy speakers.
1 (Frequency response range: Frequency response range is an important indicator to examine the performance of the speaker. It has a direct relationship with the performance and price of the speaker. The smaller the decibel value (dB), the flatter the frequency response curve of the speaker, the smaller the distortion and the higher the performance.
2 (Sensitivity: The unit of sensitivity is decibels (dB). The sensitivity of ordinary speakers is in the range of 85 ~ 90dB, below 85dB is low sensitivity, above 90dB is high sensitivity, and the sensitivity of multimedia speakers is usually slightly lower.
3 (Power: Power simply means how powerful the sound from the speaker can be. Usually businesses in order to cater to consumer psychology, usually the music power standard is very large, in the purchase of multimedia speakers to the rated power shall prevail. But the power of the speaker is not the bigger the better, the application is the best, there is no need to pursue high power too much.
4 (Distortion: The distortion of sound box refers to the distortion of electro-acoustic signal converted into sound wave. The allowable range of sound wave distortion is within 10%, and the average human ear is not sensitive to distortion within 5%, so it is better not to buy sound box with distortion greater than 5%.
5 (Signal-to-noise ratio: This indicator refers to the ratio of the normal sound signal played back by the speaker to the noise signal. The signal-to-noise ratio is low, the noise is serious when the small signal is input, and the sound in the whole range is obviously turbid. I don't know what sound is made, which seriously affects the sound quality. Speakers with a signal-to-noise ratio of less than 80dB (including subwoofers below 60dB) are not recommended.
6 (Impedance: This indicator refers to the ratio of the voltage to the current of the input signal. Low impedance speakers can get a larger output power, but the impedance is too low will cause bass degradation and other phenomena.
7 (sound effect technology: hardware 3D sound effect technology is now more common SRS, APX, Q-SOUND and Virtaul Dolby, etc., each implementation method is different, but can make people feel obvious three-dimensional effect, of which the first is the most common. Are the application of the extended stereo theory, so that the sound sounds have a sense of space and three-dimensional, resulting in stereo effects.
If the pursuit of sound quality is not high, just buy a few tens of dollars. If it is a treasure son who has a relatively high pursuit of sound quality, you can buy jbl, rover and other brands. If there are small partners in the decoration at home, it is recommended that you start with the ceiling speaker of Ba Lei j6. The whole product is very cost-effective. If you want to experience HIFI sound quality at home, you can rush directly, I used it for less than half a year. Thieves like it. In the daily selection of speakers, everyone refers to the above seven indicators. In addition, it is generally not a big problem to select speakers according to their own needs and budget ~