Home computer speaker performance indicators, what are the main performance indicators of speakers

The first thing you have to do is decide whether you want volume, sound or sound quality.

Volume:Just choose a cheap and big speaker,The opening volume is quite deafening,Deafening

To sound effects: choose an innovative sound card, above the speaker. Set up a position to play games and watch movies, which is absolutely immersive.

To sound quality: It's hard to say, this involves concepts such as timbre, and there are no specific indicators to judge. It is recommended to choose an innovative mid-to-high-end sound card,Or VIA chip sound card, etc.,Use the speaker as much as possible,1900TIII is the most entry-level,There is also a need to choose a good sound source and listening environment

Professional data, you can't tell with your ears, you can only hear the surface effect.

The quality of the sound produced depends on the quality of your computer's sound card, which is the quality of the external speaker, and the sound channel is just a form of audio pronunciation

If you're not an audiophile, there's not much difference between two-channel and six-channel effects, and there's no difference between an onboard sound card and a discrete sound card. The focus is on the speaker,But,If the speaker grade is too high,It's also not audible,Isn't that a waste?

Therefore, it is recommended to choose an economical and practical Edifier with excellent sound quality, and a slightly higher grade of 180 is sufficient. There are also low-grade 130 ones.

The miscellaneous brands used sound like listening to a tape recorder, but the good ones are different, and there is a sense of ** will. The voice is mellow, free of noise, and sounds very deep.

There are six main technical indicators: frequency response, signal-to-noise ratio, dynamic range, distortion, transient response, stereo separation, and stereo balance.

1. Frequency response.

The frequency range of audio equipment during playback and the amplitude of sound waves as a function of frequency. The frequency amplitude of 1000 Hz is used as a reference, and the frequency amplitude is expressed in decibels (dB) as a logarithm.

The overall frequency response of the sound system is theoretically required to be 20 20000Hz. In actual use, due to the circuit structure, the quality of the components and other reasons, it is often impossible to meet the requirements, but generally at least 32 18000Hz.

2. Signal-to-noise ratio.

The ratio of the sound reproduction sound of the audio source software of the audio system to the new noise generated by the whole system, the noise mainly includes thermal noise, AC noise, mechanical noise and so on. This metric is measured in decibels (dB) as the logarithmic ratio of the rated output power of the playback signal to the system noise output power when there is no signal input. The signal-to-noise ratio of the audio system should be at least 85dB.

3. Dynamic range.

The logarithm of the ratio of the maximum undistorted output power during audio system playback to the system noise output power at static time, in decibels (dB). The dynamic range of a better sound system is above 100 (dB).

4. Distortion. When the sound system replays the source signal, some parts of the original source signal (waveform, frequency, etc.) are changed. Allah in the sound system has the following types: harmonic distortion, intermodulation distortion, transient distortion.

5. Stereo separation.

Stereo separation indicates the degree of isolation between the left and right channels in a stereo system, and it actually reflects the degree to which the left and right channels crosstalk with each other. If there is a large crosstalk between the two channels, the three-dimensional effect of the reproduced sound will be reduced.

6. Stereo balance.

Stereo balance represents the difference in the gain of the left and right channels in a stereo playback system, and if it is not too balanced, the panning of the reproduced stereo will be shifted. Generally, the stereo balance of a high-quality audio system should be less than 1db.

7. DB is widely used in electronics, it is a relative unit for measuring and comparing the magnitude of power, voltage and current of a system.

Impedance, Power, Sensitivity, Frequency Curve, Transient Response, Maximum Distortion, Signal-to-Noise Ratio, and more.

The most important speaker parameter is "frequency response", which determines the ** of the speaker.

For example, the frequency response is 50Hz 20khz, which is the parameter of the general speaker, because there is no subwoofer, and there is no HIFI parameter, ** is not expensive, and you can buy it for 1,000 yuan.

If there is (+3db), it is hifi sound quality, **3000 or more.

Subwoofers, ** more expensive.

For example, the frequency response is 40Hz 20kHz, and the frequency response is at least 3000. 40 Hz is super bass, if it is 30 Hz, it can be more than 7000. The lower the bass, the more expensive it is.

If there is (+3db), it is high-fidelity hifi sound quality, ** more than 10,000 yuan.

It should be noted that only the parameters of brand-name speakers are true and reliable, and the parameters of miscellaneous speakers may be fake.

The others are impedance and sensitivity.

The impedance needs to be matched with the power amplifier to calculate the power.

Those with low sensitivity need to be doubled in power to push well. Around 90db is relatively high, and around 86db is relatively low.

Of the above three parameters, the first frequency response is an indication of sound quality, which is the most critical parameter.

Second, three are secondary parameters and are just power matching and amplifier power selection references.

According to the IEC60581 high-fidelity loudspeaker system standard, there are frequency response distortion and so on, which can be referred to the IEC standard.

Speaker System Rated Power Output Power Signal-to-Noise Ratio Frequency Response Function Adjustment Speaker Unit Anti-magnetic Function Speaker Size Subwoofer: Speaker Weight Isolation Audio Output

1. Resistance value: matching with the expansion machine.

2. Sound frequency: the frequency range of sound output.

3. Distortion.

Fourth, directionality.

Computer speakers are one of the important external devices of many computers, especially those"Audiophiles"of players are buying high-quality speakers at any cost, how can you choose a satisfactory speaker? Its importance indicators are mainly as follows: Frequency response The hearing range of the ordinary ear is the sound with a frequency of 25Hz-20KHz, therefore, the frequency of the speaker should reach at least 45Hz-20KHz to ensure the effective hearing range of the basic coverage of the human ear.

Generally speaking, the frequency response of multi-** computer speakers can basically meet the requirements in the range of 40Hz-20kHz. Harmonic Distortion This refers to the distortion of sound reproduction due to the resonance phenomenon generated by the loudspeaker, and this metric should be as small as possible. Sensitivity The higher the value of this index, the better the performance, and the sensitivity of ordinary speakers is generally 70db-80db.

Output power includes both nominal power (i.e., continuous output power) and peak power (i.e., maximum output power). Nominal power refers to the maximum value of the output power of the speaker when the harmonic distortion of the speaker changes within the standard range; Peak power refers to the maximum instantaneous power of the speaker under the condition of not overloading. When purchasing, pay attention to whether it is marked with nominal power or peak power.

Appearance selection Poor quality speakers are also poor in appearance workmanship. Therefore, we must carefully observe whether there are bubbles and cracks on the surface of the box, and whether the switch is convenient to operate. Pick from the acoustics, that's the key, the most important"Listen"。

The specific listening method is to listen to the current sound first, at this time unplug the audio input cable, and adjust the volume to the maximum, the human ear should not be able to hear the noise about 20 cm away from the speaker, or the noise is very weak. Then use the tune you are very familiar with**, listen carefully to the audio, the bass is deep but not turbid, the treble is bright but not sharp, and the midrange is mellow, at this time the volume should not be adjusted too much, the volume is not good for the sound quality, do not be misled by the operation of the business. At the same time, it should be noted that the adjustment knob on the speaker should not have poor contact noise when rotating.

Finally, it should be noted that all kinds of power wiring, switches, and plugs on the speaker should meet the safety requirements If these accessories are fake and shoddy products, it is conceivable that the quality of the speaker is not good. In addition, the purchased computer speaker should have anti-magnetic performance, if the anti-magnetic performance of the speaker is not good, there will be magnetization of the display, resulting in a decrease in display quality. Fenda V350 Length:

246 86 36mm Weight** Similar to the mermaid Fenda V360 Length: 238 85 34mm Weight 500g V350 and V360 If you want to choose 360 (I see it myself, you can also look for it carefully) Longqin Mermaid Length: 224 88 36mm,** Yuan weighs about 375 grams Tulip Length:

200 57 36mm,** Yuan tulip will be much lighter than the mermaid and weighs about 280 grams, and the performance is elegant and mermaid Yalanshi AL-225 upgrade, price 99-199 Length: main chassis: 225 70 40mm packaging In general, Longgen's mermaid is recommended.

The main thing is to see for yourself.

Tell you that indicators are useless! The main thing is my own sense of hearing! Listen to it yourself, just like it!