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How to Edit Sound Effects for a Sound Effect Library
Editing your raw audio recordings into professional quality sound effects is the step that takes place after the initial recording period. Hunt down an audio editing software that has eqs, the ability to cut audio, normalization, and fade in/out capabilites. You may use either a freeware readily found online or purchase one of the many digital audio workstations (DAW) available on the web.
First import all of your raw .wav recordings into the software of your choice. Try to import 40 or so for efficiency, though you may attack one at a time, and solo each track for editing which mutes all tracks except the one with which you are working. Now you are ready to edit your sounds and then bounce them into completed sound effects. The following points will assist the quality and efficiency of your work.
1. First, normalize each track before editing it. This function increases the highest existing amplitude of the .wav file to the highest possible amplitude, meaning simply that it makes the .wav files as loud as possible.
2. Next, cut out unwanted frequencies that degrade the quality of your sound by using eqs. For instance, an unwanted air conditioning sound may be interfering with a bird chirp. To get rid of the unwanted AC simply apply a high pass filter around 2,000 Hz which will kill the AC noise but preserve the higher frequencies of the bird chirp.
3. When your sound is normalized and cleaned up with eq find a clean beginning point to the sound and either create a fade-out or more desirably let the natural reverb ring out for 1-2 seconds.
5. Mix down a 48k 24bit stereo .wav file to be used for video productions. Such 48k 24bit stereo files earn the most money as they are valued by video editors and producers for their higher quality.
5. Make as many versions of each sound recording as possible to increase your number of products. For example, if you have a dog barking 20 times then create sound effects with one bark, three barks, six barks, 10 barks etc. switching up the combinations of barks. This could easily give you 50 or more sound effects from just that one sequence of dog barks.
6. Increase your content holdings even further by using pitch shift. For example, a person's laugh can be pitch shifted down to create a deep giant's laugh or pitch shifted up to create a little child's laugh.
A little knowledge of the ins and outs of audio editing combined with the above tips will allow you to easily create professional sounding effects that can be licensed time and time again by multi-media editors and producers.
About the Author SFXsource writes informative pieces on media, manages a Sound FX library and in addition gives away Free Sound Effects for media productions.
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