Mason Blake
Audacity is a free, open-source software used for audio editing and recording. It is compatible with Mac OS, Windows, and Linux. Audacity is a popular choice for podcasters, musicians, and video editors as it offers a range of features, from sound manipulation to video audio enhancement. This software is simple to use and offers many useful functions, such as the ability to split audio tracks, adjust the tempo, and amplify sound. Before recording, users should select the correct recording device and adjust the recording level to ensure optimal sound quality. Once recorded, users can play back their audio, visualise frequencies, and make edits using the selection tool.
| Characteristics | Values |
|---|---|
| Cost | Free |
| Compatibility | Mac OS, Windows, Linux |
| Editing capabilities | Basic and advanced |
| Basic editing capabilities | Splitting audio tracks, selecting audio sections, adjusting tempo, deleting sections |
| Advanced editing capabilities | Volume compression, mixing, sound manipulation, video audio enhancement |
| Selection tool | Click and drag to highlight desired section |
| Selection preview | Press spacebar to play selection only or 'c' to play audio before and after selection |
| Selection adjustment | Hover cursor over start or endpoints, adjust as desired |
| Undo function | Command+z or ctrl+z |
| Track creation | Track → Add New → Stereo Track |
| Track movement | Time-Shift tool |
| Recording device selection | Recording Devices Menu |
| Volume adjustment | Recording Level control |
| Volume monitoring | Start Monitoring feature, visual representation in waveform |
| Recording playback | Play button |
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What You'll Learn
Selecting audio tracks
Audacity is a free audio editing software that is compatible with Mac OS, Windows, and Linux. It is a popular choice for podcasters, musicians, and video editors.
To select a portion of an audio track in Audacity, first, make sure the select tool in the upper left corner is selected. Then, click and hold at the beginning of the section you want to select. You will notice a vertical line, the playhead, that moves across the screen as your audio plays. This indicates the current position in your audio file. Once you have found the desired starting point, drag the cursor to the end of the section you want to select. The selected section of the audio will appear in dark grey.
To select from your cursor to the beginning or end of the audio track, click on the Edit tab in the menu bar. Then, click on "Select" and choose either "Cursor to End" or "Start to Cursor".
If you want to split the audio track into two separate tracks, select the second half of the portion you want to split. Then, click on the Edit tab and select "Split". The second half of the split audio will now be on a separate track.
You can adjust your selection by placing your cursor over the start or end points. The cursor will turn into a hand-pointing finger icon. Click and drag the endpoints to adjust the selection as needed.
Once you are satisfied with your selection, you can delete it by simply hitting the delete button. Audacity will remove the selected portion and move the remaining audio forward to fill the gap. You can then play back your edited audio to ensure it sounds as intended. If not, you can use the "Undo" function or re-import the original audio file to try again.
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Splitting audio tracks
Audacity is a free audio editing software that is compatible with Mac OS, Windows, and Linux. It is used by professionals and hobbyists alike, including recording engineers, podcasters, and audio restoration pros. One of the many functions of Audacity is splitting audio tracks.
Splitting a clip in Audacity means that you are separating a continuous sound file into two pieces. This can be done for several reasons, such as separating clips you want to keep from those you want to delete, making space to insert new audio, increasing or decreasing the spaces between segments, processing audio on one particular segment of the track, or removing unwanted sounds.
To split an audio clip in Audacity, you can follow these simple steps:
- Move the pointer to the desired split point on the track and press the left mouse button.
- Select "Edit" from the menu bar, then "Clip Boundaries", and finally, "Split". Alternatively, you can use the keyboard shortcut Ctrl + I.
- Now, you can select and edit the new clip sections independently.
If you have a long audio track and want to split it into multiple sections, such as chapters in an audiobook, you can follow these steps:
- Use the cursor counter at the bottom of the window to locate the desired split point in the elapsed time of the file.
- Highlight the section you want to split by clicking and holding at the beginning of the section and dragging the cursor to the end.
- Go to "Edit" and select "Copy".
- Select "File", then "New" to create a new window.
- Go to "Edit" and choose "Paste" in the new window.
- Repeat steps 1-5 for each additional split you want to make.
- Once you have created all your splits, select "File" and then "Export".
- Choose a location to store your files and name them accordingly (e.g., "Chapter1", "Chapter2", etc.).
- In the "Save as type" box, choose the appropriate file format, such as MP3 or WAV.
- Edit the ID3 tags to help keep things organized on your MP3 player.
Additionally, Audacity offers the ability to split stereo tracks into mono tracks. This is useful when you have recorded audio using multiple microphones, and each speaker's audio is on a single stereo track. To do this:
- Select the track dropdown menu for the track you want to split.
- Choose "Split Stereo to Mono Tracks".
- Each channel will now become its own mono track, allowing you to edit them separately.
With these tools and tricks for splitting audio tracks in Audacity, you can efficiently edit and manipulate your audio projects.
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Editing audio tempo
To edit audio tempo in Audacity, first select the portion of the audio track you wish to edit. Then, go to the Effect menu and select Change Tempo.
In the Change Tempo window, you will see a Percent Change window with a slider. You can increase the tempo by a certain percentage by entering a positive number in the Percent Change window, or decrease it by entering a negative number. Alternatively, you can use the slider to adjust the speed: move the slider left of center to reduce the speed, and right of center to increase it. You can also enter a number in the field, such as "-10" to reduce the speed by 10%, or a positive number to increase it.
If you know the BPM of the selection and the BPM you want to change it to, you can enter these values, and the Percent Change and Length "to" values will update accordingly. If you know the new length of the selection, you can enter this value instead.
Once you are happy with the new tempo, click "OK". You can then preview your edited audio by clicking "PLAY". If you are not satisfied with the changes, you can undo them by going to the Edit menu and selecting "Undo".
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Adjusting recording levels
When adjusting recording levels in Audacity, it's important to remember that you want your recording to be as loud as possible without introducing distortion, known as 'clipping'. It's better to have a recording that's too low than too high, as you can always amplify the sound later. To avoid distortion, keep an eye on the waveform at the top of your screen. If you see spikes reaching the top of the waveform, turn your recording level down a bit. You can do this by moving the 'Recording Level' control down, which will make your microphone volume quieter. Conversely, moving the control up will increase the volume and pick up more sound.
To monitor your volume levels as you speak, right-click on the volume slider and select 'Start Monitoring'. This will allow you to see your volume levels in real time as you record. If you notice any clipping, simply adjust the 'Recording Level' control until the spikes in your waveform no longer reach the top.
Once you're happy with your recording level, you can start recording by hitting the big red Record button. As you speak, you'll see the waveform change in real time. When you're done, simply hit Stop.
After recording, you can use the Play button to start playback from wherever you've clicked on the waveform. This allows you to listen back to your recording and check for any issues. If you need to make any adjustments, simply use the Undo function or adjust the volume using the 'Recording Level' control. Remember, it's always better to have a quieter recording that you can amplify later than a distorted recording that needs to be re-recorded.
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Exporting audio
Once you are done editing your audio, you can export it from Audacity by clicking on the "File" tab. You will then be able to choose from various export formats, including "Export as WAV" or "Export as MP3". Name the file and click "Save". If the sound is distorted after exporting it as WAV or MP3, try exporting it as the other file type.
Audacity supports multiple exports from a single project. You can export audio from all selected tracks, even if some of those tracks are greyed out or muted. You can also choose to export either the entire project or just the current selection.
When exporting audio, any leading blank space offset in the tracks or project is treated as silence by default, and the exported audio will be padded with appropriate leading silence. However, you can choose to ignore leading blank space on export by checking the box in the Export Audio dialog.
You can also edit the metadata of your audio file before exporting it. Click the "Edit Metadata" button, and a dialog box will appear, allowing you to enter embedded information tags such as artist, year, or genre.
Additionally, Audacity offers cloud saving and versioning for your projects. To save a project to the cloud, go to "File -> Save to Cloud", and follow the prompts to link your audio.com account to Audacity.
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Frequently asked questions
Audacity is a free audio editing tool that is compatible with Mac OS, Windows, and Linux. You can download it from the official Audacity website.
Use the selection tool and click and drag to highlight the section you want to remove. The selected area will appear in a darker grey. Once you're happy with your selection, hit delete.
You can adjust the volume by using the 'Recording Level' control. Moving the slider down makes the microphone volume quieter, while moving it up picks up more sound. Be careful not to go too far and introduce distortion into your audio.
Select the second half of the track that you want to split. Then, click on the edit tab and click on 'split'. The second half of the split audio will move to a separate track.
First, select the section of audio you want to edit. Then, click on the 'Effect' tab and click on 'Change Tempo'. Do not click on 'Change Speed' as this will also alter the pitch of the audio. Click and drag the meter to change the tempo and click 'OK' when you are happy with the result.
