To find out more, check out the source of this table and the reason the resonant frequency varies between different people in the following short video. It can be made clear from this table that applying a single EQ setting to all speech types will be ineffective.
The table below shows the variation that could occur depending on the type of speech. The human voice has a resonant or fundamental frequency, simply put, this is the natural frequency used from the voice box when talking. One reason for this is because everyone’s speech varies the frequency range and the amplification and attenuation of frequencies vary for all people. There is not a “best” or default EQ setting that can be applied to achieve high-quality speech. This process is subjective and different Audio Engineers may choose to EQ differently to others, whether it is because they believe a different technique sounds better than that of another engineer, or to achieve a different style of mixing.Īn Audio Engineer may also be responsible for applying EQ to podcasts, of which there is a range of reasons why EQ should be applied to the speech recordings on podcasts, which will be discussed within this article. This means that they have to increase and decrease the levels of certain frequencies for a range of instruments to best allow instruments to be heard clearly through EQ. In music, an Audio Engineer may have the responsibility of “mixing the track”.
The audible frequency range is from 20 to 20,000 Hz, this is the frequency range we are concerned with when we EQ. The higher the frequency, the faster the audio signal is vibrating. Frequency is essentially the rate at which an audio signal vibrates per second and can be measured in Hertz (Hz). EQ, which is short for equalization, is the manipulation of levels over the audio frequency spectrum.
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