The new audio editing software Audacity comes with many built-in effects. These effects are for the all types of users, from beginners’ level to advance. These effects could help you create whatever type of audio files you want to create. A brief introduction of some of the important effects is discussed here.
Normalize is a method of correcting the DC offset in a track. It is similar to the method we know as amplification. Audacity also provides effects for Amplification as well. Amplification is done by using a certain value in dB and clipping the value above it. However, some difference is seen when they are used on multiple tracks rather than on just one. When trying to change the level in the track, the normalization effect is used to attain a maximum amplitude level. In amplification, there are two values instead of one. These are the maximum and minimum points. In Audacity the amplification effect for level changing is given as a slider and you can adjust to certain value. In case of any DC offset, the user should always use the Normalize effect to correct them.
Another effect very useful is the Change Speed. This effect alters the frequency of the track, along with the pitch. The change is brought by the change in the sampling speed of the audio track. The change in frequency would mean change in length of the track. For example, by increasing the frequency of the track, the length of the track becomes shorter and vice versa. The change of speed is brought by a slider that has the value in both negative and positive. The slider is either directly adjusted or one can input the number, such as 100% or -50% etc. A positive number means increase in the frequency and negative number means decrease. If you are using records used in gramophone, there are some built-in speeds available in Audacity.
Other Important Effects
Another effect, which is very important for users, who want to remove unwanted noise or spikes in the track, is Click Removal. This is more like a tool that allows the user to delete the spikes and unwanted piece of waves from the track. The software Audacity has built-in functions such as Removal and Detection, which would clear most of the unwanted noise, by taking average of the amplitude of the track. However, it will be more feasible if a self-cleaning is performed by the users themselves as well.
Filters such as high pass and low pass filters are also available for more basic audio files. The Noise Removal effect available in Audacity is more of digital noise detections, depending on the Noise profile provided by the user a threshold is used to find what the amount of noise present in the sample is and work out what to be removed on its accord. This is the beauty of most of the Audacity’s effects as they require very little effort from the users’ end and most of the effects are available to apply with a single click.