Audacity is a free open software and great performance. Among the effects of the sound editing program, we will see how to use the effects of Amplify and Normalize, which are similar to each other at a glance.
First, should I download Audacity?
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Function of Amplify effect
To know exactly what effects are, it is the fastest way to understand the name of the effect itself. Sound is transmitted through vibration. Amplification effect is amplified by amplifying the amplitude of the vibration. As mentioned above, it functions to raise a small sound.
Also, since this amplification is applied to all amplitudes, the noise also becomes larger. Therefore, when editing a sound source, it should be done in the following order: 'Noise Reduction'> 'Amplification', but 'Amplification'> 'Noise Reduction'.
If you select 10 sources and amplify them by 10dB, each source will be 10dB larger than your current sound.
How to use the Amplify effect
If you want to amplify a specific section, select a specific section by dragging, and if you want to amplify the whole section, press 'Ctrl + A' to select all.
Click 'Effect (C)'> 'Amplify ...' or 'Amplify' at the top to bring up the Amplification menu.
'Amplification (dB):' followed by an arbitrary number. There is a standard volume size that is set in Oda City by default, and if you use the amplification function, it will catch the amplification value that corresponds to the proper size that you set. In normal cases, amplify as it is written, otherwise write the value directly. If you write a positive number, the sound becomes bigger. If you write a negative number (-), the sound becomes small. It is an amplification effect, but it can make it smaller as well as raise sound.
Functions of the Normalize effect
Normalize has the meaning of 'standardize', which is also a function of its name. When you select a sound source and apply the normalize function, the volume is automatically adjusted based on the standard volume size that is set in Oda City as previously mentioned.
Therefore, when one sound source is normalized, it does not feel a difference from the amplification function, but the effect is revealed when a plurality of sound sources are applied at the same time.
If you select all 10 different sound sources by 'Ctrl + A' and apply Normalize, you can calculate the standard value of each sound source, amplify the sound source smaller than the standard, and make the sound source larger than the standard Reduce the sound, such as name, the size of each sound source 'normalize'.
How to use the Normalize effect
Likewise, press 'Ctrl + A' to select all sound sources to normalize and then click 'Effect'> 'Normalize' or 'Normalize' to open the Normalize window.
The 'DC Offset Removal (centering the waveform at 0.0 amplitude level)' function and the 'Normalize to the next maximum amplitude value: -1.0 dB' function will be checked.
'DC Offset Elimination' is roughly a function that removes the DC offset based on the '0.0' amplitude, thereby reducing distortion and normalizing it more accurately. Let's just feel the difference between checking and not knowing
What is important is that this decibel number is the default '-1.0 dB'. You can only set up to 0, and if you enter more than 0, 'OK' button will not be activated. Therefore, if you enter a value of 0, it will be normalized to the highest volume based on the standard sound set in Oda City.
The last "normalize stereo channels independently" function is literally. It is a function that can be used if you use a stereo sound source that can hear both sounds separately.
Differences between Amplify and Normalize
To distinguish the meaning and effect exactly, amplification is to raise or lower the sound, and Normalize is to normalize the sound.
Simply put, for example, if you amplify 10 sources by 10dB, each of the smaller and louder sounds is equal to 10dB in their original loudness.
However, if you normalize the 10 sources, the louder sounds become louder and the louder louder becomes smaller, adjusting to the standard sound source size. During this process the tiny sounds are going crazy because the amplification is done anyway.
Amplify and Normalize eliminate noise together
As I said earlier, if both functions increase the noise, the noise also grows together,How to Remove Oda City Noise. Simply remove the desired noise