1. The signal source
The function of the power amplifier is to output the weak level signal source to the speaker, and then send out various sounds through the vibration frequency of the speaker. This is the high, medium and low sound we hear, if the signal source has noise or after some signals are lost after compression, and then amplified by the power amplifier, these noises will be amplified larger, and the missing components will not be released, so the sound source used in our evaluation of the sound is very important.
2. The equipment itself
The audio equipment itself also has a great influence on the sound quality, that is to say, the power amplifier has a high signal-to-noise ratio, a wide frequency response, and a low distortion. The resolution of the speaker is strong, the effective frequency is wide, and the frequency response curve is flat. Speakers with a frequency response of 20Hz-20KHz are very good. Of course, the best ones can still reach 20Hz--20KHz (+3%dB). There are many audios on the market that say that the high frequency can reach 30 or even 40KHz. Quality is constantly improving, but our human ear is generally more than 20KHz sound is hard to hear, so it is not necessary to pursue some ultra-high audio that we can't hear. Only the flatness of the frequency response curve can realistically reproduce the original sound. The aspect depends on the size of the area to be used. It should be proportional. If the area is too small and the power is too large, the sound pressure will cause too much reflection, making the tone become turbid, and vice versa. The power of the amplifier is 20% to 50% better than the power of the speaker in the impedance matching. The bass will be stronger and stronger, the middle and high sound levels will be clearer, and the sound pressure will not be so easily distorted.
3. The user itself
Some people buy audio purely for display, some people want to enjoy music, and some use a speaker to show off. Simply put, if a person can't even distinguish between high and low sounds, then he will hear what is good. Sound quality? In addition to listening, it will be used. Some friends installed the sound, and the installation technician adjusted the effect. As a result, one day, accidentally who was curious to move some knobs, the effect can be imagined, this is not to say To understand what technology, just like we drive, at least to understand the role of each switch, button, knob, in order to play the performance and safety of this car.
4. The use of the environment
Everyone knows that in a large empty room, the echo of some speech or some sound is particularly large, because the room has no sound-absorbing materials on six sides or insufficient attraction, caused by reflection of sound waves. The sound is the same. If the sound-absorbing material of the sound is not good, then the sound that is released will not be good. If the sound is slightly larger, it will be very turbid.
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