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Teachers' toolkit for creating and re-purposing OER using FOSS/Audio and Video OER (view source)
Revision as of 13:44, 26 February 2017
, 13:44, 26 February 2017→Moving a selection of audio
==== Amplifying sound ====
==== Amplifying sound ====
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. You can also use the ‘amplify’ function to increase or reduce the sound level in a track. <br>
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. You can also use the ‘amplify’ function to increase or reduce the sound level in a track.
Select the track, Goto "Effect from the menu bar, select amplify and reduce the track pitch. <br>
[[File:Amplifying (reducing) the background music.png|600px]]
<br>Select Effect -> Amplify. Reduce the amplification by moving the slider leftward. Increase the amplification by moving the slider rightward.
Image - Reducing sound amplification<br>[[File:Amplifying (reducing) the background music.png|600px]]
[[:File:Audio file with background music amplified (reduced).ogg|Audio file with amplification]] (sound reduced)
[[File:Audio file with background music amplified (reduced).ogg]]
[[File:Audio file with background music amplified (reduced).ogg]]
==== Exporting the Audacity project to create audio output file ====
==== 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.
After completing your editing tasks, select <u>File → Export</u> and select the file format as MP3 and click export, to create an output audio file in the .mp3 format.
You can also save the Audacity project, for this select <u>File → Save.</u>
This will save the work done as an Audacity project. You can go back to this file (using <u>File -> Open</u>) to continue editing
Image exporting Audacity project to create audio output file<br>
[[File:Audacity_7_Export_Metadata_Edit.png|450px]]
Audacity is particularly useful for a language teacher to create audio resources for language learning.
Audacity is particularly useful for a language teacher to create audio resources for language learning.