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Tuesday, June 24, 2008

Tips on Editing Sound Effects for a Sound Effect Library

By SFXsource

Once you have recorded a large amount of material intended to be used as sound effects, the next step in creating a sound effect library is to edit this raw audio. You will need an audio editing software that will allow you to cut, fade in/out, normalize, and eq your tracks. There are many professional digital audio workstations (DAWs) out there for purchase and also several useful freewares easily found on the internet.

Open your audio software and import all of your new raw .wav recordings. Take a large batch of 40 or so .wav files to import and solo each track, thus muting the others, as you work on each file one by one, though you may of course choose the less efficient method of importing one at a time. At this point you can begin editing your recordings and then mix them into finished sound effect products. The advice that follows provides useful information on creating the most valuable sound effects possible from you .wav recordings.

1. Use normalization on each recorded sample first. Normalization increases the amplitude of each .wav file, in other works amps the volume as loud as can be.

2. Second, use eq to cut out any unnecessary frequencies that may interfere with the quality of your sound. For example, you may have a recording of a bird chirp which also has an outside air conditioning unit humming mixed into the sound. To fix this problem, you can cut out all frequencies below 2,000 Hz which will take out the AC but keep the bird's higher tones.

3. After cleaning and amping the audio next find a clean break with which to start each particular sound effect and make a fade out or let the natural reverb of the sound fade out by itself 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. In order to increase your amount of products make as many versions of each recording as possible. For example, if a recording has a cat meowing 25 times, make sound effects with one meow, two meows, 5 meows, 8 meows etc. while changing up the combination of meows. This process will easily give you 50 or more sound effects from one sequence of cat meows.

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.

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