Seven performance indicators to measure the sound quality of the speaker
Release time:
2024-08-27
The 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.
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 sense, resulting in stereo effects.
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