無論舉辦何種會(huì)議，音響效果往往是決定會(huì)議質(zhì)量的關(guān)鍵因素。會(huì)議室的擴(kuò)聲系統(tǒng)、多媒體系統(tǒng)和設(shè)備錯(cuò)綜復(fù)雜。想要獲得佳的會(huì)議音效，并不是簡單地堆疊麥克風(fēng)、揚(yáng)聲器、調(diào)音臺(tái)和功放。下面來講講多媒體會(huì)議音響的4個(gè)調(diào)試步驟內(nèi)容吧。
No matter what kind of meeting is held, the sound effect is often the key factor to determine the quality of the meeting. The sound reinforcement system, multimedia system and equipment in the conference room are complex. To get good conference sound, you don't simply stack microphones, speakers, mixers, and amplifiers. Let's talk about the four debugging steps of multimedia conference audio.
檢查系統(tǒng)是否連接正確。
Check that the system is properly connected.
多媒體會(huì)議音響系統(tǒng)的正確連接是會(huì)議音頻調(diào)試的基礎(chǔ)。根據(jù)系統(tǒng)配置接線圖，仔細(xì)檢查線路連接和供電系統(tǒng)，預(yù)設(shè)好音響設(shè)備的功能按鍵，確保話筒供電充足。
The correct connection of multimedia conference audio system is the basis of conference audio debugging. According to the system configuration wiring diagram, carefully check the line connection and power supply system, preset the function keys of the audio equipment, and ensure that the microphone has sufficient power supply.
調(diào)整揚(yáng)聲器的位置。
Adjust the position of the speakers.
主揚(yáng)聲器應(yīng)放置在會(huì)議主席臺(tái)的兩側(cè)，分體式揚(yáng)聲器底部為中低音揚(yáng)聲器，中間為中音揚(yáng)聲器，頂部為高音揚(yáng)聲器。如果兩側(cè)揚(yáng)聲器的輻射區(qū)域相互呼應(yīng)，音質(zhì)會(huì)大大提高。請(qǐng)勿避免在音箱上放置盆栽、臺(tái)燈或瓷像，以免因音箱震動(dòng)導(dǎo)致物體掉落而中斷會(huì)議。
The main speakers shall be placed on both sides of the conference rostrum. The bottom of the split speaker is a mid bass speaker, the middle is a mid-range speaker, and the top is a tweeter speaker. If the radiation areas of the speakers on both sides echo each other, the sound quality will be greatly improved. Do not place potted plants, desk lamps or porcelain images on the speaker to avoid interrupting the meeting due to objects falling due to speaker vibration.
打開功放，設(shè)置大電平。
Turn on the power amplifier and set the high level.
確認(rèn)系統(tǒng)和硬件設(shè)備正常后，接通設(shè)備電源，打開功放，將電平調(diào)到大。在混音器指示燈上將混音器輸入增益設(shè)置為0dB，慢慢向上推混音器輸出推子，并根據(jù)揚(yáng)聲器中聲音的音量調(diào)節(jié)推子，以達(dá)到佳音量。為保證佳調(diào)試效果，建議使用相位計(jì)檢測器檢查每個(gè)揚(yáng)聲器是否同相。
After confirming that the system and hardware equipment are normal, power on the equipment, turn on the power amplifier, and adjust the power level to large. Set the mixer input gain to 0dB on the mixer indicator, slowly push up the mixer output fader, and adjust the fader according to the volume of the sound in the speaker to achieve a good volume. To ensure good commissioning effect, it is recommended to use phase meter detector to check whether each loudspeaker is in phase.
避免音頻嘯叫。
Avoid audio squealing.
多媒體會(huì)議音響廠家建議將混音器通道推子推到0dB，將麥克風(fēng)放在會(huì)議講臺(tái)上，打開監(jiān)聽輸出，找到導(dǎo)致麥克風(fēng)嘯叫的頻段，并調(diào)整均衡器設(shè)置以它。麥克風(fēng)應(yīng)指向，避免對(duì)著發(fā)言者，必要時(shí)可適當(dāng)調(diào)整會(huì)議講臺(tái)的位置。操作范圍必須小，這樣嘯叫才能保持在一個(gè)穩(wěn)定的水平，然后再調(diào)整到更準(zhǔn)確。
The multimedia conference audio manufacturer suggests pushing the mixer channel pusher to 0dB, placing the microphone on the conference platform, turning on the monitoring output, finding the frequency band that causes the microphone to howl, and adjusting the equalizer settings to eliminate it. The microphone should point to avoid facing the speaker. If necessary, the position of the conference platform can be adjusted appropriately. The operating range must be small, so that the howling can be kept at a stable level, and then adjusted to be more accurate.
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