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Line 60: + + + + + + + + + + + + + + + + + + + + + + + + + + − == how to create video resources using your video recorder (on your mobile phone) ==+ − You can record a video clip using your mobile phone itself, using the camera on the phone. You can copy the video file from your phone to your computer for editing and re-mixing to create OER. − We have recorded the same short interview with a teacher on why Digital Storytelling is important, using a mobile phone and copied the clip to our computer as ‘Interview - why Digital Storytelling..’+
Teachers' toolkit for creating and re-purposing OER using FOSS/Audio and Video OER (view source)
Revision as of 16:46, 24 February 2017
, 16:46, 24 February 2017no edit summary
Open Audacity on your computer, through Applications → Sound and Video → Audacity
Open Audacity on your computer, through Applications → Sound and Video → Audacity
Image – Opening Audacity
<nowiki>https://teacher-network.in/OER/images/thumb/b/bc/Audacity_1_Option_Menu_To_Open.png/450px-Audacity_1_Option_Menu_To_Open.png</nowiki>
We will need to ‘import’ the audio we have (of the teacher interview) into Audacity
We will need to ‘import’ the audio we have (of the teacher interview) into Audacity
Import your audio into Audacity through File → Open and select your audio file
Import your audio into Audacity through File → Open and select your audio file
Image – importing audio file into Audacity
<nowiki>https://teacher-network.in/OER/images/thumb/9/96/Import_Audio.png/450px-Import_Audio.png</nowiki>
You should also import your audio clip which you want to edit. You can add tracks to the audacity file.
You should also import your audio clip which you want to edit. You can add tracks to the audacity file.
This software is very powerful with many sophisticated features. However, we will learn a few commonly used functions in audio editing:
This software is very powerful with many sophisticated features (for advanced features, refer to the user manual on <nowiki>http://manual.audacityteam.org/</nowiki> and tutorials on <nowiki>http://manual.audacityteam.org/man/tutorials.html</nowiki>) . However, we will learn a few commonly used functions, in audio editing, which are useful to teachers in creating and re-purposing OER:
# Moving a selection of audio
# Moving a selection of audio
# Adding a background music track
# Adding a background music track
=== Moving a selection of audio ===
=== Moving a selection of audio ===
Just like you can cut (or copy) paste a selection of text in a text document, you can cut (copy) and paste a selection of audio in an audio file. You can use this function to remove any part of the audio clip you do not want. You can move a part of a clip from one place to another (for instance if you want to re-order responses in an interview). You can also delete a part of the clip also using the same functionality.
Image – copying or moving a selection of the audio file
<nowiki>**</nowiki> Audio – Original and edited audio file
=== Adding a background music track ===
=== Adding a background music track ===
You may want to add background music to an audio recording. It is easy to do this with Audacity. We can add as many tracks as we want, with one audio file per track.
Image – Adding a track in Audacity for background music
<nowiki>https://teacher-network.in/OER/images/thumb/0/0c/Audacity_4_Add_New_track.png/450px-Audacity_4_Add_New_track.png</nowiki>
<nowiki>https://teacher-network.in/OER/images/thumb/7/77/Audacity_5_Multipal_Track.png/450px-Audacity_5_Multipal_Track.png</nowiki>
<nowiki>**</nowiki> Audio –Audio file with background music added
=== Reducing background noise levels ===
=== Reducing background noise levels ===
You may have an audio recording where there is some unwanted disturbance throughout, such as traffic sounds. You can use the ‘Noise Reduction’ function in Audacity to reduce the background noise.
Image – Reducing background noise
<nowiki>**</nowiki> Audio – Audio file with background noise reduced
=== Exporting the Audacity project to create audio output file ===
After completing your editing tasks, select File → Export and select the file format as MP3 and click export, to create an output audio file in .mp3 format.
You can also save the Audacity project to continue editing, for this select File → Save.
Image – exporting Audacity project to create audio output file
<nowiki>https://teacher-network.in/OER/images/thumb/5/50/Audacity_7_Export_Metadata_Edit.png/450px-Audacity_7_Export_Metadata_Edit.png</nowiki>
Audacity is particularly useful for a language teacher to create audio resources for language learning.