Equalization is used to manipulate and edit the audios according to their frequencies. This is to bring to your kind notice that this feature has been removed from Audacity. But it has been bifurcated into two tools, namely Filter Curve and Graphic EQ.
The filter curve is an equalization tool. When you click on the Filter curve option in the Effects menu, you will see a pop-up message box. Let us discuss all the buttons and the input boxes that will appear in detail.
- Draw EQ Filter Curves
You will see a graph. That graph is basically the equalization curve, which contains a blue graph and a green one. Both of them follow a common pattern and are along similar lines. This graph contains white circles at some points, which are the control points.
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- The Sliders and Scales
There are vertical and horizontal scales, which are in dB and Hz respectively. Increasing the dB value from 0 will amplify the sound and decreasing the same will attenuate it.
- Equalization settings
Flatten option will set the curve from left to right, exactly at 0 dB. This will generate a volume leveled graph. ‘Invert’ option as the name suggests will invert the curve upside down. ‘Show Gridlines option will let you set the orientation of the control panel.
This feature helps you in Graphic Equalization. When you click on the Graphic EQ option in the Effects menu, you will see a pop-up message box. Let us discuss all the buttons and the input boxes that will appear in detail.
- Graphic EQ sliders
These are the frequency curves that help us to generate the curve. We can set the value of various sliders, like the frequency slider, which will define the characteristics of the curve.
You can use keyboard arrows to increment or decrement the value. You can do the same by using the cursor to click on my value on the slider. The slider will automatically catch the nearest whole number value.
Flatten and Invert equalization options are available in the message box. ‘Flatten’ will make the curve volume-leveled and will generate a curve that is at the 0 dB value from left to right. ‘Invert’ option will invert the curve upside down. In other words, the gains in frequency will dip to the negative side and vice versa.
- Four buttons
There are four more buttons at the bottom of the message box, apart from all the above-stated options. Let us see them.
- Manage: This option will let you set the tool presets. You can save the settings made to the slider or can even restore the previously made settings.
- Preview: This is a really useful tool. It helps you review the selected settings and edits before even applying them to the original audio or clips. You can set the length of the preview audio, but by default, its value is 6 seconds.
- OK: This option helps you to finally apply the selected edits. It will do its task and will close the dialog box.
- Cancel: This option will delete any selected changes and will close the dialog box.
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