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电容式麦克风咋看参数

从这张图能看出来的信息还是不够足，最多能看出来这是款心形指向的48V电容麦克风。
你还得知道这款麦克风准确的的指向性图，还有频率响应曲线。
最大声压级越大越好，灵敏度越高越好，频响范围越广越好，最好有滚降开关。(但是，高灵敏度和宽频响范围对录音环境和设备的要求更高，糟糕的录音环境和设备会变成一场噩梦。)
最主要的是，对于音频设备，尤其是拾音设备，你得实际测试才能知道它的音色究竟如何。
(K500我手里有一支，个人觉得算是民用入门级里不错的了，至少比ISK强。)
【电容式麦克风咋看参数】 个人推荐组合的话，Focusrite 2I2＋Shure SM58，入门级人声录制的好选择，适应范围强，动圈可以减少不少环境噪音。有的人也喜欢SM57，看你选择了。

■网友
音头：采用的器件类型，电容式麦克风目前最普遍。频响：表示能接受的频率范围，光凭这个参数不够，这个范围只是表示在30Hz-20kHz频带内灵敏度在一个可接受范围内，但是这个范围并没有一个公认的值，因此更好的描述是频响曲线。不过对于人声，对频响的要求其实很低，过宽的频响反而会录进一些不需要的环境噪声。灵敏度：1kHz单位声压输入时输出的值，一般在-30dB到-50dB，其实这个值本身意义并不太大，因为麦克风都会经过放大器和AD转换的。指向性：心形指向性指对正面灵敏度最高，背面最低。适合对确定的目标录音，如果用于电话会议之类就要多个麦克风。输出阻抗：影响后端设备匹配问题。负载阻抗：后端设备的阻抗不能小于这个值，否则输出会下降。等效噪声级：无声音输入的时候麦克风本身的输出噪声，是非常重要的参数，麦克风能够”清晰录制的声音“取决于录制的声音和噪声的差值，也有用信噪比(SNR)描述这个特性的，SNR=94-Noise。即此麦克风信噪比为76dBA。最大声压：能够接受的最大的声音，如果超过这个值，总谐波失真（THD）会急剧增大。这也是一个很重要的参数。
■网友
谢谢邀请，时间有限，直接饮用我在sos论坛上的一个帖子吧。我有时间再好好翻译一下Specs are so similar between products these days that they often don\u0026#39;t actually tell you very much. It was different 30 years ago -- you really could choose products on the basis of their specs because the difference between the good and was obvious. That\u0026#39;s not the case today: even the cheapest preamps perform remarkably well if used sensibly.Things like input and output transformers tend to impact the character and quality, class A discrete circuitry has a certain nuance to it. Valves as well, of course. Spec wise, the EIN figure can give an indication of noise performance, as can dynamic range figures. The maximum input level gives an idea of headroom margins, and the maximum output level gives an idea of the power supply rails and \u0026#39;professionalism\u0026#39; of the design. Impedance is rarely important unless you\u0026#39;re working with exotic ribbon mics.A lot of the spec figures are often largely meaningless because the tolerances of weightings will have ben omitted. A CMRR figure of 90dB sounds impressive, but at what frequency? RFI interference is more likely to be an issue than mains hum, so what\u0026#39;s the rejection at RF? Few spec sheets will tell you....Which is why, today, a thorough hands-on review by someone you have come to trust is likely to be far more informative about a product than the published specs -- at least that\u0026#39;s my opinion.


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