There are any number of things that can increase or decrease your relative volume to the listener. We have loudness standards for making sure that the audio content produced
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There are any number of things that can increase or decrease your relative volume to the listener. We have loudness standards for making sure that the audio content produced sounds about right to the end listeners. However any number of reasons including changes in positioning or even atmospheric changes in a room can make the produced audio sound off as the output from the microphone varies in volume across a wide range. This range is called the headroom of the microphone, the difference between the quietest sound it can accurately represent to the loudest, before it begins to distort. Microphones with lots of headroom can be highly desirable, and often very expensive. However for most spoken word applications this headroom is not desirable beyond the on the bare minimum needed to make the audio sound natural. In order to reduce this dynamic range without losing desirable features of the microphone such as its frequency response and accurate voice reproduction we process the audio produced by the microphone through what is known as a compressor. The topic of compressors and audio dynamics in general is discussed more in our guide to audio dynamics and you should be aware that it is not necessary how to use a compressor in all speech applications. indeed in the world of TV where lavalier mics are more common for live applications it is very rare to use compressors at all. But if you are pre-recording speech for a show you should consider asking our audio resources team how they recommend processing your voice in order to get the nicest sounding output, which will likely involve the usage of compressors within your DAW.