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The following are examples of programs that can be used to edit audio:

• Audacity
• Adobe Audition
• GarageBand

Common features of audio editing software

Not all audio editing software packages share the same features, but most enable you do the following:

• record, playback and edit audio
• cut and trim - remove audio from the start or end, or choose the best bit and delete the rest
• remove background noise, eg hissing
• normalise or remove spikes and dips in volume
• save or output audio in different file formats and at different quality settings
• tag audio – add information about the audio to the file, eg author and credits