Seven technical indicators of speakers
author: Holly
2023-01-04
Seven technical indicators of speakers
The sound box market is mixed, with prices ranging from tens of yuan to thousands of yuan. How to choose a suitable sound box according to my use needs has become a problem for many people. What kind of speaker is really a good speaker? In particular, the "rookie" level enemies who do not know much about the speakers can only look at the appearance and listen to a short piece of deafening music played by the merchants, which can only be felt by the senses; As far as the technical goal is concerned, I don't know where to judge the sound box. This article introduces the technical objectives of speakers in a complex way. I hope these contents can provide some references for you when purchasing speakers. usb desktop speakers.
Speaker technical indicators: sound effect technology
Hardware 3D sound effect technologies are rare nowadays, such as SRS, APX, Q-SOURCE and Virtaul Dolby. Although they are completed in different ways, they can make people feel distinct 3D effects, and the first one is the rarest. In fact, they all use Extended Stereo. This is to stop the additional processing of acoustic signals through the circuit, so that the listener can feel that the sound direction extends to the outside of the two speakers, so as to stop the sound expansion, make people have a sense of space and plane, and produce a more open plane sound effect. In addition, there are two kinds of sound effect enhancement technologies: active electromechanical servo technology and BBE high-definition plateau sound reproduction fragmentary technology, which also have a certain effect on improving sound quality.computer speakers for music。
Technical index of loudspeaker: frequency response range
The full name of frequency response range is frequency range and frequency echo. The former refers to the range between the lowest invalid playback frequency and the highest invalid playback frequency; The latter refers to the scene in which the sound pressure of the speaker increases or decreases with the change of frequency and the phase changes with the change of frequency when an audio signal input with constant voltage is connected to the fragments. The correlation between the sound pressure and the phase and the frequency is called frequency echo, in decibels (dB). The identification of the curve of sound pressure and phase lag changing with frequency is called "amplitude frequency characteristic" and "phase frequency characteristic", which are collectively called "frequency characteristic". This is an important objective to investigate the function of speakers. It has an indirect relationship with the function and price of speakers. The smaller the decibel value, the smoother the frequency response curve, the smaller the distortion, and the higher the function. For example, the frequency response of a speaker is 60Hz~18kHz+/- 3dB. These two concepts are sometimes indistinguishable and are called frequency response. In fact, the harmonic components that make up the sound are very complex. It is not that the wider the frequency range, the worse the sound will be. However, this is fundamentally correct for medium and high-end multimedia speakers. Today's speaker manufacturers generally label the range of fragmentary frequency response too large, and there are not many high frequency local differences, but the label on the high end is very untrue, so we advise you to listen to the low frequency sound and not trust the values on the leaflet.
Technical index of loudspeaker: sensitivity
This target refers to the sound pressure level measured at the center one meter behind the stereo vertical axis of the loudspeaker when the 1W/1kHz signal is output to the loudspeaker output terminal. The unit of sensitivity is decibel (dB). For every 3dB difference in the sensitivity of the speaker, the input sound pressure will be twice as different. The sensitivity of ordinary speakers is in the range of 85~90dB. Below 85dB is low sensitivity, and above 90dB is high sensitivity. Generally, the sensitivity of multimedia speakers is slightly lower.
Speaker technical indicators: sound effect technology
Hardware 3D sound effect technologies are rare nowadays, such as SRS, APX, Q-SOURCE and Virtaul Dolby. Although they are completed in different ways, they can make people feel distinct 3D effects, and the first one is the rarest. In fact, they all use Extended Stereo. This is to stop the additional processing of acoustic signals through the circuit, so that the listener can feel that the sound direction extends to the outside of the two speakers, so as to stop the sound expansion, make people have a sense of space and plane, and produce a more open plane sound effect. In addition, there are two kinds of sound effect enhancement technologies: active electromechanical servo technology and BBE high-definition plateau sound reproduction fragmentary technology, which also have a certain effect on improving sound quality.computer speakers for music。
Technical index of loudspeaker: frequency response range
The full name of frequency response range is frequency range and frequency echo. The former refers to the range between the lowest invalid playback frequency and the highest invalid playback frequency; The latter refers to the scene in which the sound pressure of the speaker increases or decreases with the change of frequency and the phase changes with the change of frequency when an audio signal input with constant voltage is connected to the fragments. The correlation between the sound pressure and the phase and the frequency is called frequency echo, in decibels (dB). The identification of the curve of sound pressure and phase lag changing with frequency is called "amplitude frequency characteristic" and "phase frequency characteristic", which are collectively called "frequency characteristic". This is an important objective to investigate the function of speakers. It has an indirect relationship with the function and price of speakers. The smaller the decibel value, the smoother the frequency response curve, the smaller the distortion, and the higher the function. For example, the frequency response of a speaker is 60Hz~18kHz+/- 3dB. These two concepts are sometimes indistinguishable and are called frequency response. In fact, the harmonic components that make up the sound are very complex. It is not that the wider the frequency range, the worse the sound will be. However, this is fundamentally correct for medium and high-end multimedia speakers. Today's speaker manufacturers generally label the range of fragmentary frequency response too large, and there are not many high frequency local differences, but the label on the high end is very untrue, so we advise you to listen to the low frequency sound and not trust the values on the leaflet.
Technical index of loudspeaker: sensitivity
This target refers to the sound pressure level measured at the center one meter behind the stereo vertical axis of the loudspeaker when the 1W/1kHz signal is output to the loudspeaker output terminal. The unit of sensitivity is decibel (dB). For every 3dB difference in the sensitivity of the speaker, the input sound pressure will be twice as different. The sensitivity of ordinary speakers is in the range of 85~90dB. Below 85dB is low sensitivity, and above 90dB is high sensitivity. Generally, the sensitivity of multimedia speakers is slightly lower.
