Maybe you have already started trying to record your voice with Audacity software following the steps that I have written in the article titled How to Record Your Voice Using External Microphone on Mac.
When the audio is finished recording, it is sometimes found that some parts of the audio that sound unclear are not the main sound either because your volume at that time is rather weak or disturbed by the dominant background sound.
Besides that, there could be an empty time lag that is too long without any conversation that appears. So in these parts, it needs to be repaired or removed so that the entire audio file will produce satisfying and pleasant to the ear. Furthermore, the file can be used for other purposes, for example, combined with a video file to be uploaded to your YouTube channel, embedded in an article post on the web or blog, or uploaded in a podcast account that you have.
Below is an example of an original audio file recorded from an external microphone where the audio volume still sounds small. You can later compare before and after the quality improvements in Audacity.
So before the audio file is used in your next program, evaluation of the recording quality is needed. If several parts need to be repaired or improved in quality then you need to do that. Below are general steps to improve and improve your audio quality using Audacity software:
1. Increase the Audio Volume
If you use a poor quality external microphone, of course, it can cause the audio recording to be affected to be bad, for example, the volume of recorded audio files that sound too weak. For that, the first step that must be done is to increase the volume of recorded audio. You do this by selecting the entire audio from beginning to end. There are 4 (four) methods for selecting (selection) the entire audio track in Audacity, namely:
- Click and drag method with the mouse. This method is easy to do. All you have to do is click the left mouse button from the beginning of the track to the end of the track then release the mouse. If the selection process cannot be done, activate the function first by clicking the Selection tool (icon with the letter I on the Toolbar).
- Use the shortcut Ctrl + A (Windows) or Command + A (macOS) on your PC or notebook keyboard). Click the left mouse on the audio track then press the combination button as above, then the entire track will be selected.
- Click the [Select] button on the Track Control Panel. By clicking on the [Select] button the entire track will be selected automatically.
- Double click anywhere on the audio track. This is also the easiest method of choice because only double-clicking then the entire track will be selected automatically.
After the selection process is done, to increase the audio volume, you just select the menu [Effect] – [Normalize]. This effect function to increase the audio volume. The results of the first improvement can be heard below:
2. Give Enough Bass and Treble Effects
To make it look more character, you can add special effects in the form of bass and treble effects. You do this by selecting the entire track then click [Effect] – [Equalization] – [Select Curve]: Bass Boost – [OK]. Repeat this step to select the Treble Boost.
Bass & Treble Boost
3. Add reverb or echo effects
Also, you might be interested in adding reverb effects. You do this by selecting the entire track then select [Effect] – [Reverb]. Leave the default settings for Reverb (or change the value to change settings). Perform [Preview] to listen to the effect then click [OK] if it is appropriate.
4. Hide Unwanted Voices in the Blank Pause
Maybe when you pause for a moment before resuming recording, other incoming but unwanted sounds emerge. Then you can get rid of the sound by making a selection on the part that you want to mute, then click the icon labelled Silence audio selection in the panel at the top. Once removed the unwanted sounds will disappear (as if there were no recorded sounds). However, it should be noted that if there is a primary vote that should still be maintained then when this is done, the primary vote will certainly be lost.
5. Remove or Delete the Unnecessary Recording Part
The final step is to remove or delete parts of the recording that are completely unnecessary so that they can be discarded. By removing the section, the overall time duration will also be shortened. For example, at the beginning or end of the recording, there may be a time lag before you speak, then the part can be eliminated. You do this by selecting the track that is still maintained then select the icon above the panel that reads Trim audio outside the selection. Then the part that has been selected will still be there while outside it will be cut off. After that select or selection on the piece that you want to remove then click the [Delete] button on your keyboard. The second way is to directly select the part that you want to discard and then click the [Delete] button on your keyboard.
By going through the steps above, the minimum quality of audio recordings that have been taken can be improved before using it on your YouTube or Podcast channel. For other stages, it might be necessary but requires a further level of expertise. Besides that, it will require a longer completion time.