在我们身边有各种各样的电磁波无时不在身边盘旋，只要电器是在使用的情况下，都有电磁场和电磁辐射，那么
山东会议室音响设备有辐射吗?怎么预防呢?小编收集和整理了相关资料以供参考。
There are all kinds of electromagnetic waves hovering around us all the time. As long as the electrical appliances are used, there are electromagnetic fields and electromagnetic radiation. Is there any radiation from the audio equipment in Shandong conference room? How to prevent it? Xiao Bian collected and sorted out relevant materials for reference.
可以明确地说，大部分会议室音响是不具备无线电磁波辐射的。音响的本质是一个低频功率放大器，放大的高信号频率一般也就是20碍贬锄，其输出电压也不会超过几十伏，这种频率距离产生电磁波辐射的频率要差一个数量级了(1/10都不到)。
It can be clearly said that most conference room acoustics do not have radio electromagnetic wave radiation. The essence of sound is a low-frequency power amplifier. The amplified high signal frequency is generally 20KHz, and its output voltage will not exceed dozens of volts. This frequency is an order of magnitude different from the frequency of electromagnetic wave radiation (less than 1/10).
正因为由于音响工作频率低，低频电磁波也只能靠导线传播。即使导线在传播交流电的过程中泄露电磁信号，其产生辐射的能量远小于微波炉、电磁炉、电视、吸尘器、电吹风、手机等这些常见的电气、电子产物。
Because of the low working frequency of audio, low-frequency electromagnetic waves can only be transmitted by wires. Even if the wire leaks electromagnetic signals in the process of transmitting alternating current, the radiation energy generated by it is far less than that of microwave ovens, electromagnetic ovens, televisions, vacuum cleaners, hair dryers, mobile phones and other common electrical and electronic products.
个别音响使用开关电源，如果开关电源做的不好会产生高频电磁辐射，还有顿类功率放大器由于是数字信号的处理，其处理频率要远高于20碍贬锄，可能产生一些电磁辐射，但这些功放市面上不多，且内部一般都有滤波装置去除这种高次谐波。
Some audio systems use switching power supply. If the switching power supply is not well done, high frequency electromagnetic radiation will be generated. As Class D power amplifiers process digital signals, their processing frequency is much higher than 20KHz, which may generate some electromagnetic radiation. However, these power amplifiers are few in the market, and generally have filtering devices inside to remove such high-order harmonics.
经过收集得到会议音箱是整个音响系统的终端，其作用是把音频电能转换成相应的声能，并把它辐射到空间去。
The conference speaker is the terminal of the entire audio system, which is used to convert audio power into corresponding sound energy and radiate it into space.
它是音响系统其重要的组成部分，因为它担负着把电信号转变成声信号供人的耳朵直接聆听这么一个关键任务，它要直接与人的听觉打交道，而人的听觉是十分灵敏的，并且对复杂声音的音色具有很强的辨别能力。
It is an important part of the sound system, because it undertakes the key task of transforming electrical signals into sound signals for human ears to listen directly. It has to deal directly with human hearing, which is very sensitive and has a strong ability to distinguish the timbre of complex sounds.
对音箱来说更多磁场集中在低频(50贬锄)所以需要参考绿色数字，5耻罢/0.05办贬锄=100，如果测试数值超过100说明对人体健康风险较大。此外电源在经过开关管后频率由50贬锄变为200碍贬锄，所以需要参考紫色部分的数值，0.92耻罢/0.2惭贬锄=4.6，如果测试数值超过4.6说明对人体健康风险较大。
For the speaker, more magnetic fields are concentrated at low frequency (50Hz), so it is necessary to refer to the green figure, 5uT/0.05kHz=100. If the test value exceeds 100, it indicates that the human health risk is high. In addition, the frequency of the power supply changes from 50Hz to 200KHz after passing through the switch tube, so it is necessary to refer to the value of the purple part, 0.92uT/0.2MHz=4.6. If the test value exceeds 4.6, it indicates that the risk to human health is high.
小编建议会议音箱虽小，辐射可不小，使用时好能离人体半米以上，以保护听力和身体健康。另外，音箱的低音效果越好，辐射污染就越强，在购买时需要慎重考虑。特别是孕妇、老人、小孩尽量减少使用音箱的次数，以免给自身造成伤害。更多相关事项就来我们网站
咨询了解吧。
The small editor suggested that although the conference speaker is small, its radiation may not be small, and it can be used more than half a meter away from the human body to protect hearing and health. In addition, the better the bass effect of the speaker, the stronger the radiation pollution, so you need to consider carefully when buying. In particular, pregnant women, the elderly and children should try to reduce the number of times they use speakers to avoid causing harm to themselves. Come to our website for more information Ask and understand.
