The video conferencing system is a software and hardware integrated system, which requires careful adjustment of each link to achieve perfect conference results. Qingyang video conferencing is a high-performance multimedia switching system. The solution of echo and noise is mainly solved by the selection and configuration of audio equipment such as microphones, stereos, mixers, etc. This is actually from the stage or concert technology. gain experience.
Video conference echo and noise solutions
Video conference echo and noise solutions
1. Qingyang video conference experience
First, introduce some of the sound experience of the Qingyang video conference.
1. The main notes:
a. Notebook problem: Do not use the microphone and speaker built into the notebook.
b. Desktop problems: Do not use the microphone that comes with the camera.
c. Do not aim the microphone in the direction of the speaker.
d. The distance between the sound and the microphone should be a little farther.
e. Meeting room should choose a unidirectional dynamic microphone or wireless microphone.
f. The mixer is the key to improving audio quality in large conference rooms.
g. Use the mixer or the speaker to enhance the volume of the dynamic microphone.
2. Additional matters:
a. The audio performance of the operating system seems to win7 better than xp.
b. PCs with too low performance will bring noise.
c. The network bandwidth is not good or the server performance is not good, so the sound can not be transmitted in real time.
and many more.
Second, different audio and video equipment can be selected for different usage environments and usage requirements.
2. Audio equipment selection for single participants
Single-person participation means that the participants use a daily office notebook or computer to participate in the conference using the network, because only one person uses a small portable device.
1. Headset. The easiest way to use a single person is to use a headset. The main use of the headset is to avoid using headphones that are too sensitive to avoid echo.
2. PC microphone. The general way of using is to select a PC microphone with a certain directionality. For example, the Philips SHM1000.
Table 1: Configuration table for audio equipment for single participants
Computer configuration microphone brand model microphone type sound card and its sound recording, playback volume | speaker volume speaker
Desktop - Dual Core | 2G|win7-32 ​​Philipsshm1000PC Microphone Integrated HD Sound Card - Microphone Enhanced +10dB100%, 40%|50% PC Audio
The above configuration can achieve a conference effect with a general sound effect, a large volume, and a clear sound.
3. Audio equipment selection for small and medium-sized conference rooms
In small and medium-sized conference rooms of 5 to 10 people, the volume of the broadcast is large. Therefore, the key point of selecting a microphone is that the other party's voice cannot be mixed into the microphone, causing the other party to hear their own echo.
1. Use a dynamic microphone. The good dynamic microphone has the characteristics of firmness, low sensitivity and unidirectionality. It can be used on the scene of the noisy stage, effectively suppressing noise in noisy environments, and clearly and accurately reproduce the speech sound. For example: ShureSM58 vocal microphone.
2. Use a wireless microphone. It has the advantages of the above-mentioned dynamic microphone, and also has the convenience of having one receiver with multiple microphones.
3. Need to use the mic to amplify the volume. Due to the impedance mismatch, the dynamic microphone or wireless microphone is directly connected to the computer and the volume is small and must be transferred. If the conference room is small, the easiest way to use it is to zoom in on the microphone.
4. Or use a small mixer. The mixer is a professional device that can completely replace the phone.
Computer configuration microphone brand model microphone type sound card and its sound transfer device speaker
Notebook-dual-core|2G|win7-32-bit ShureSM58 dynamic microphone integrated HD sound card or small mixer active audio
4. Audio equipment selection for medium and large conference rooms
Conference echoes or noises in medium and large conference rooms are similar. The idea of ​​selecting an audio device is as follows.
1. The existing conference room central control system can be combined with video conferencing.
2. The mixer is an indispensable audio device core. An on-site mixer is required to achieve beautiful speech sound in noisy environments. For example, Yamaha's Mg166CX console and so on.
3. Access multiple microphones as needed. The mixer allows multiple access, so the dynamic and durable, low sensitivity and unidirectional characteristics of the dynamic microphone can continue to play, and the flexibility of the wireless microphone can be flexibly utilized. For example: Shure's SM58 and other vocal microphones.
4. Select a uniform coverage of the sound and amplifier according to the scale.
Computer configuration microphone brand model microphone type sound card and its sound mixer mixer and speaker
Notebook-dual-core|2G|win7-32-bit ShureSM58 dynamic microphone integrated HD sound card Yamahamg166cx video conference room size
In short, the audio part of the conference system is a very professional system with a high technical content. The above only introduces the simple use experience. When the project is implemented, you can consult a professional audio and video engineering company to build a concert-like wonderful. Audio effects.
PC Led Panel Light includes round and square two shape frame. We are the manufacturer of producing energy saving interior lighting. This type of panel light is made by pure PC material in frame and back cover. It has aluminum heat sinking and concealed mounted installation. There are three color temperatures with cool white, warm white and natural white of panel lights. It has both concealed and surface mounted installation way. The unique features of LED Panel Light are: CRI>80, PF>0.5. These panels are mainly apply to home, office and school, etc.
PC Led Panel Light
Led PC Panel Light,Ceiling Led PC Light,PC Panel Light
Jiangmen Lika Lighting Electrical Appliances Co., Ltd , https://www.lika-led.com