What are the reasons that affect the sound tone of mini Bluetooth speaker?
Whether listening to music or singing karaoke, the sound quality of the stereo depends on four major factors:
1. Signal source
The function of the power amplifier is to amplify and output the weak level signal source to the mini Bluetooth speaker, and then the vibration frequency of the mini Bluetooth speaker unit in the speaker will send out various frequencies of sound, that is, the high, medium and bass we hear. The source has noise (distortion) or some signal components are lost after compression. After the power amplifier is amplified, these noises will be amplified more, and the missing components will not be able to be released, so the sound source used when we evaluate the sound is good or bad is critical.
2. The equipment itself
That is to say, the power amplifier should have a high signal-to-noise ratio, a wide effective frequency response, and a low distortion. The effective frequency of the mini Bluetooth speaker should be wide, and the frequency response curve should be flat. The frequency response of 20Hz-20KHz can be said to be very good. It is rare for a mini Bluetooth speaker to reach 20Hz-20KHz+3%dB. There are many mini Bluetooth speakers on the market that say that the high frequency can reach 30 or even 40KHz. This shows that the sound quality is constantly improving, but our normal human ears Signals above 20KHz are difficult to distinguish, so there is no need to pursue some ultra-high frequencies that we can’t hear. Only a flat frequency response curve can realistically reproduce the original sound. The power depends on the size of the used area. To be proportional, if the area is too small and the power is too large, the sound pressure will cause too many reflections, making the tone turbid, otherwise the sound pressure will be insufficient. The power of the amplifier should be 20% to 50% larger than the power of the mini Bluetooth speaker in impedance matching. This way the bass will be firmer and stronger, the mid-to-high tone level will be clearer, and the sound pressure will not be so easily distorted.
3. The user itself
Some people buy stereos for furnishings, some to appreciate music, and another to show off. Simply put, if a person can't even distinguish the high and low sounds, can he hear what is good sound quality? You have to know how to listen. After some people’s audio is installed, the installation technician will simply talk about the effect. The result is that one day someone accidentally moved some knobs because of curiosity. You can imagine the effect. This is not to say Knowing what technology is like when we drive a car, we must at least understand what the switches, buttons, and knobs do in order to give full play to the performance and safety of this car.
4. Use environment
Everyone knows that when there is no occupant in an empty room, the echo is particularly loud when you clap and speak. This is because there is no sound-absorbing material on the six sides of the room or the sound absorption is insufficient, and the sound is reflected. The sound is the same. If the sound absorption is not good, the sound will not be good, especially if the sound is louder, it will be muddy and harsh. Of course, some people say that it is impossible to set up a professional audition room at home. A little money can do it well. For example: hang an embroidered picture on a large wall that is beautiful and sound-absorbing, hang thicker cotton curtains on the glass windows, and put a carpet on the ground, even if it is a decorative carpet in the middle of the ground. The effect will be surprising. If you want to do better, you can hang some soft and non-smooth decorations on the wall or ceiling, which is beautiful and reduces reflection.
