4. Audio and podcasts
Listen to how sound quality affects our perception of facts (ABC Radio, 3m37s). This study, by Dr. Eryn Newman, found that people were less likely to trust the speaker if the audio was poor quality.
Microphones
If possible, use an external microphone or audio recorder rather than your smartphone or camera’s built-in microphone.
An external microphone will allow you to:
- get the microphone as close as possible to the sound source
- record the sound you want to pick up. The built-in microphone will pick up all the sound in the surrounding environment
- handle and adjust the controls on your video recorder without worrying about the noise you make.
A lavalier (lapel microphone) or a headset microphone, particularly with a noise cancelling feature to filter out background noise, will record clearer audio than a built-in microphone.
If you want to buy a microphone, the Podcast Host has some recommendations:
Where to record audio
If you are videoing in a noisy environment, it would be better to record your audio in another location. You can use editing software to add the audio to the video later. Audio or video editing software can be used to reduce background noise but it will require a lot more effort.
Audio settings
Microphone settings
- Place the recording device about 10cm away from the person speaking
- If you have an external microphone, set it at an angle from the mouth (45 degrees) to avoid breathing straight onto it
- Record in stereo (two channels — left and right) to get a better sound
- Choose to record as a WAV file, if possible. This is a high quality, uncompressed format. Keep it as a WAV file when you are editing. When you are finished, you can select to export the file as a lower quality, lossy compressed format, such as MP3 or ACC, for a smaller file size. Find out more about file types and compression in our Work with data and files module.
Sample rate and bit-depth
Set the sample rate and bit depth in the audio editing software on your computer or the app on your smartphone. If possible, choose a:
- Sample rate of at least 41 KHz (41000 Hz) — a higher sample rate will record a higher range of frequencies, which gives a better quality sound, but the file size can be very large
- 16-bit depth or sample format — the bit depth affects the dynamic range of the recording. 16-bit is a good, general purpose, high quality setting. A 32-bit recording will give a better quality but the file size might be too large for exporting and uploading.
Audio recording with smartphone apps
If you cannot use an external microphone, use a recording app on your smartphone that lets you set it to stereo and WAV file. Read how to make high quality recordings using your smartphone for more tips. If you don’t have a recording app installed, try one of these apps from Google Play or the App Store:
- Voice Record Pro (iOS)
- Rev (iOS and Android)
Audio editing software
You can use audio editing software on your computer to record and edit sound.
| Tool | Guides | Tutorials on LinkedIn Learning (A Charles Sturt login is required) |
|---|---|---|
| Audacity | Audacity Manual | Learning Audacity (LinkedIn Learning, 1h42m) Charles Sturt login required |
| GarageBand (for MacOS) | Garageband Support | Garageband Essential Training (LinkedIn Learning, 4h4m) Charles Sturt login required |
| Adobe Audition | Audition tutorials | Audition Essential Training (LinkedIn Learning, 4h15m) Charles Sturt login required |
Get more information on tools for working with sound, including Logic Pro X.
Beyond Audacity vs. GarageBand: Podcast Editing Software
Read this article to help you decide which free audio editing software to use.
Use Word for the web to transcribe audio recordings. You can:
- record in Word, or
- upload a file to Word. Transcribe supports .wav, .mp4, .m4a and .mp3 formats.
As a Charles Sturt student you have free access to Microsoft Office 365, which allows you to install Word, Excel, PowerPoint, Outlook and OneNote for free on up to 5 PCs or Macs and Office apps on Android, Apple and Windows mobile devices. Other free software options are available from the University Software downloads page.
Having a transcript for audio content can help make your content more accessible.
Submitting your audio assignments
Check your Subject Outline for detailed instruction about how to submit audio assignments.
Podcasts
A podcast is a digital recording, usually audio, made available online for downloading. Often users can subscribe to the podcast program and are notified when new podcasts are published. Podcasts can be a monologue, an interview, a documentary and a range of other formats.
Prepare a podcast
Quick tips:
- Prepare your script or interview questions using everyday language and short sentences. Long sentences can confuse your listeners
- Practise reading your script. Try to vary your tone of voice. Avoid a monotone
- Use music to create the mood and engage your audience. The Find and use media module lists sources for music and sound effects.
Podcast tutorials
- How to start a podcast: Step by step — includes planning, recording and publishing tips
- Get started with podcasts and Podcast authoring best practices from Apple
LinkedIn Learning podcast courses
These courses require a Charles Sturt LinkedIn Learning login:
- GarageBand: Podcasting (LinkedIn Learning, 2h17m)
- Producing professional podcasts (LinkedIn Learning, 5h6m)
Podcast hosting
After you create your audio file for your podcast, you can upload it to a site for others to access it.
| Tool | Storage space for free accounts | Guides |
|---|---|---|
| Soundcloud | 3 hours | Creator guide |
| Podbean | 5 hours | Podbean podcasting basics |
| WordPress | 3GB | Podcasting on WordPress |
You can then submit your podcast to directories like:
More audio tutorials
Do these tutorials if you would like to understand more about audio techniques:
