作為酒吧音響回收http://m.enetspider.com/過程中的重要環(huán)節(jié)，音箱對(duì)酒吧整體的音效起著至關(guān)重要的作用。酒吧音箱的各項(xiàng)技術(shù)指標(biāo)中，有五項(xiàng)非常重要，分別是靈敏度、頻率響應(yīng)、指向特性、輸出阻抗和動(dòng)態(tài)范圍。As an important part of the bar audio recycling process, the speaker plays an important role in the overall sound of the bar. There are five important technical indicators of the bar speakers, namely, sensitivity, frequency response, pointing characteristics, output impedance and dynamic range.

1.靈敏度。酒吧音響回收專家認(rèn)為，靈敏度是表示傳聲器聲電轉(zhuǎn)換效率的重要指標(biāo)。它的定義為：在自由聲場(chǎng)中，傳聲器頻率為1KHz恒定聲壓下與聲源正向(即聲入射角為零)時(shí)所測(cè)得的開路輸出電壓。Sensitivity. Bar audio recycling experts believe that the sensitivity of the microphone is an important indicator of the conversion efficiency of sound and electricity. It is defined as: in the free sound field, the open circuit output voltage is measured at a constant frequency of 1KHz and the sound source forward (i.e., the sound incidence angle is zero).

2.頻率響應(yīng)。它是反映話筒電轉(zhuǎn)換過程中對(duì)頻率失真的一個(gè)重要指標(biāo)。傳聲器在恒定聲壓和規(guī)定入射角聲波作用下，各頻率聲波信號(hào)的開路輸出電壓與規(guī)定頻率傳聲器開路輸出電壓之比，稱為傳聲器的頻率響應(yīng)，用分貝(db)表示。酒吧音響回收專家提醒，一般專業(yè)用話筒頻響曲線容差范圍在2db。Frequency response. It is an important index to reflect the frequency distortion of the microphone. The microphone in the constant pressure and incident angle of acoustic provisions under the effect of the frequency of sound wave signal with specific frequency microphone open circuit output voltage open circuit output voltage ratio, the frequency response of the microphone said, DB (DB) said. Bar audio recycling experts to remind the general professional microphone frequency response curve tolerance range in 2db.

3.指向特性。酒吧音響回收專家介紹，傳聲器靈敏度隨聲波入射方向的變化而變化的特性稱為指向性。常用指向圖來表示。Pointing characteristics. Bar audio recycling experts, the sensitivity of the microphone along with the direction of the change in the direction of the incident wave is called directivity. Commonly used to indicate.

4.輸出阻抗。酒吧音響回收專家認(rèn)為，指?jìng)髀暺鹘涣鲀?nèi)阻，用頻率1KHz，聲壓為1Pa時(shí)測(cè)得。常分為低阻抗，高阻抗。一般1K以下為低阻抗，大于1K以上為高阻抗。高阻抗傳聲器靈敏度有所提高，但容易感應(yīng)交流聲等外來干擾，電纜不宜長(zhǎng)。Output impedance. Bar audio recycling experts believe that the microphone AC internal resistance, with a frequency of 1KHz, the sound pressure of 1Pa. Usually divided into low impedance, high impedance. Generally below 1K for low impedance, greater than 1K for high impedance. The sensitivity of the high impedance microphone is improved, but it is easy to induce the external interference such as AC noise.

5.動(dòng)態(tài)范圍。是指?jìng)髀暺鬏敵鲎钚∮杏眯盘?hào)和最大不失真信號(hào)之間電頻差。動(dòng)態(tài)范圍小，會(huì)引起聲音失真，音質(zhì)變壞，因此要求有足夠大的動(dòng)態(tài)范圍。Dynamic range. Refers to the difference between the output signal of the microphone and the maximum distortion signal. The dynamic range is small, can cause the distortion of the sound, the sound quality is bad, therefore requests to have the enough big dynamic range.
 
酒吧音響回收專家認(rèn)為，由于傳聲器是用在傳遞人聲保真度，用在音響設(shè)備的最前端的重要設(shè)備，音質(zhì)的好壞取決于傳聲器的正規(guī)產(chǎn)家、名牌、正確選用，有很大關(guān)系。Sound bar recovery experts believe that the microphone is used in the transmission of voice fidelity, the front of the important equipment used in audio equipment, sound quality is good or bad depends on the normal microphone production, famous brand, the correct selection of a great relationship.