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音響設(shè)備的技術(shù)參數(shù)主要可以從音效技術(shù)、頻響范圍、靈敏度、功率、信噪比、失真度、阻抗這幾個方面來講解。下面
山東舞臺音響廠家為您解答。
The technical parameters of audio equipment can be explained from the aspects of sound effect technology, frequency response range, sensitivity, power, signal-to-noise ratio, distortion and impedance. Next, Shandong stage audio manufacturer will answer for you.
音效技術(shù)
mega bass
硬件3D音效技術(shù)現(xiàn)在較為常見的有SRS、APX、Q-SOUND和VirtaulDolby等幾種，它們雖各自實現(xiàn)的方法不同，但都能使人感覺到明顯的三維效果，其中又以一種為常見。
Hardware 3D sound technology is now more common, including SRS, APX, Q-SOUND and VirtaulDolby. Although their implementation methods are different, they can make people feel obvious 3D effects, and one of them is common.
頻響范圍
Frequency Response
一般情況下音響設(shè)備中的頻響范圍是頻率范圍與頻率響應(yīng)，前者是指音響系統(tǒng)的低有效回放頻率與高有效回放頻率之間的范圍;后者是指將一個以恒電壓輸出的音頻信號與系統(tǒng)相連接時。這個技術(shù)指標(biāo)是考察一個音響性能優(yōu)劣的重要參數(shù)，而且這個與音響的性能和有著直接的關(guān)系，所以在購買音響的時候要特別注意，不過現(xiàn)在有很多廠家都虛標(biāo)，所以還是要耳聽為實，一定要仔細。
Generally, the frequency response range of audio equipment is frequency range and frequency response. The former refers to the range between low effective playback frequency and high effective playback frequency of audio system; The latter refers to the connection of a constant voltage output audio signal with the system. This technical index is an important parameter to evaluate the performance of a sound system, and it has a direct relationship with the performance and price of the sound system. Therefore, special attention should be paid when purchasing the sound system. However, many manufacturers are making false claims, so it is necessary to listen carefully.
功率
power
在音響設(shè)備中功率參數(shù)也是比較混亂的，功率一般情況下是指音響發(fā)出的聲音能有多大的震撼力。這個功率有兩種標(biāo)注，額定功率與大承受功率(瞬間功率或峰值功率PMPO)。這個就不做詳細解釋了，去搜索下就知道了，在通常情況下商家為了迎合消費者心理，通常將音樂功率標(biāo)的很大，所以在選購多媒體音響時要以額定功率為準(zhǔn)。在這邊特此說明下，不是功率越大就越好，適合才是好的，根據(jù)面積來算。
In audio equipment, power parameters are also chaotic. Generally speaking, power refers to how powerful the sound emitted by the audio system can be. There are two kinds of marks for this power: rated power and large withstand power (instantaneous power or peak power PMPO). I don't need to explain this in detail. Go to search and find out. In order to cater to consumers' psychology, businesses usually mark the music power very high, so when purchasing multimedia audio, the rated power shall prevail. It is hereby explained here that the greater the power, the better. It is suitable. It is calculated according to the area.
靈敏度
sensitivity
音響設(shè)備的靈敏度指標(biāo)是指在給音響輸入端輸入1W/1kHz信號時，在距音響喇叭平面垂直中軸前方一米的地方所測得的聲壓級。靈敏度的單位為分貝(DB)。音響的靈敏度每差3dB，輸出的聲壓就相差一倍，普通音響的靈敏度在85～90dB范圍內(nèi)，85dB以下為低靈敏度，90dB以上為高靈敏度，通常多媒體音響的靈敏度則稍低一些。
The sensitivity index of the audio equipment refers to the sound pressure level measured at a distance of one meter in front of the vertical central axis of the plane of the audio horn when a 1W/1kHz signal is input to the audio input. The unit of sensitivity is decibel (DB). For every 3dB difference in the sensitivity of the audio system, the output sound pressure will double. The sensitivity of the ordinary audio system is in the range of 85~90dB, the sensitivity below 85dB is low, and the sensitivity above 90dB is high. Generally, the sensitivity of the multimedia audio system is slightly lower.
阻抗
impedance
音響設(shè)備中阻抗指標(biāo)是指輸入信號的電壓與電流的比值。音響的輸入阻抗一般分為高阻抗和低阻抗兩類，一般高于16歐姆的是高阻抗，低于8歐姆的是低阻抗，音響的標(biāo)準(zhǔn)阻抗是8歐姆。市場上音響的標(biāo)稱阻抗有4歐姆、5歐姆、6歐姆、8歐姆、16歐姆等幾種，雖然這項指標(biāo)與音響的性能無關(guān)，但是好不要購買低阻抗的音響，值是標(biāo)準(zhǔn)的8歐姆，這是因為在功放與輸出功率相同的情況下，低阻抗的音響可以獲得較大的輸出功率，但是阻抗太低了又會造成欠阻尼和低音劣化等現(xiàn)象。
In audio equipment, impedance index refers to the ratio of voltage and current of input signal. The input impedance of audio is generally divided into two types: high impedance and low impedance. Generally, the impedance higher than 16 ohms is high impedance, and the impedance lower than 8 ohms is low impedance. The standard impedance of audio is 8 ohms. The nominal impedance of the audio on the market includes 4 ohms, 5 ohms, 6 ohms, 8 ohms, 16 ohms, etc. Although this indicator has nothing to do with the performance of the audio, it is recommended to buy a low impedance audio. The recommended value is 8 ohms. This is because under the same power amplifier and output power, a low impedance audio can obtain larger output power, but too low impedance will cause under-damping and bass degradation.
信噪比
Signal-to-noise ratio
音響設(shè)備中的信噪比指標(biāo)主要是指音響回放的正常聲音信號與噪聲信號的比值。信噪比低，小信號輸入時噪音嚴重，在整個音域的聲音明顯變得渾濁不清，不知發(fā)的是什么音，嚴重影響音質(zhì)。信噪比低于80dB的音響(包括低于60dB的低音炮)建議不購買。
The signal to noise ratio index in audio equipment mainly refers to the ratio of normal sound signal and noise signal of audio playback. The signal to noise ratio is low, and the noise is serious when small signal is input. The sound in the whole range becomes obviously turbid and unclear. I don't know what sound is emitted, which seriously affects the sound quality. It is not recommended to purchase sound systems with a signal-to-noise ratio lower than 80dB (including subwoofers with a noise ratio lower than 60dB).
失真度
Distortion
音響設(shè)備中失真度定義與放大器的失真度基本相同，不同的是放大器輸入的是電信號，輸出的還是電信號，而音響輸入的是電信號，輸出的則是聲波信號。所以音響的失真度是指電聲信號轉(zhuǎn)換的失真。聲波的失真允許范圍是10%內(nèi)，一般人耳對5%以內(nèi)的失真不敏感。大家好不要購買失真度大于5%的音響。
The definition of distortion in audio equipment is basically the same as that of amplifier. The difference is that the amplifier inputs electrical signals and outputs electrical signals, while the audio inputs electrical signals and outputs acoustic signals. So the distortion of audio refers to the distortion of electroacoustic signal conversion. The allowable range of sound wave distortion is within 10%, and the human ear is generally insensitive to distortion within 5%. Hello, don't buy audio with distortion greater than 5%.
通過上面介紹的音響設(shè)備的七個技術(shù)參數(shù)，相信通過上文的介紹，大家對技術(shù)參數(shù)這方面的知識都比較了解了。更多相關(guān)內(nèi)容就來我們網(wǎng)站
http://m.74seba.com咨詢吧！
Through the seven technical parameters of the audio equipment described above, I believe that you have a better understanding of the technical parameters. Come to our website for more relevant content http://m.74seba.com Ask!
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