Q: why do I need to use hardware audio compression, can’t I just use plugins inside the computer? Yes, you could. There are two reasons that may not be ideal. First, if you record too loud into the sound card (someone talks louder momentarily) you can clip the input to your sound card and get horrible sounding audio. Sure you could just record it with 20 db of headroom, but then you’re also missing many extra bits for resolution. And if you're working with a cheap sound card, it's best to keep the level as loud as you can without ever going over. Hardware compression helps you do that. Second, some would say that hardware compressors have a better sound than their software counterparts and I’ve found that to be true in many cases.

There are some very good software compressors/limiters. Try the Voxengo Elephant limiter ($70) VST plus-in for PC’s. www.voxengo.com. Set it up on AIGC-4, slow, and boost the input so you get about 6-10 db of gain reduction on the meters. Set the output for -1 or so.

Adobe Audition also has some dynamics control built in. For starters, try highlighting your audio, then selecting effects, amplitude, hard limiting. Now try -2, 10, 7, 100 and see how it sounds.

Does it sound too squashed? Change that boost from 10 to 5. Or, need more limiting? Change the boost to 15 and give it a listen. You want a pretty consistent looking block of audio (similar to what was on page 1). If it's only reaching the peaks once in a while, you need more limiting to sound consistent.

Any other quick suggestions to improve your recording? You bet! Control the room noise by putting some blankets or comforters up on the walls as you record. If you can’t sonically treat the room, it’s best to try to stop the room reflections as best you can. There have been some national voiceovers recorded in a room with blankets to prevent room echo. It’s not ideal, but it will do the job.

Where to buy some of the hardware discussed here? I've found Full Compass to be the best mail order pro equipment dealer. Call 800-356-5844 and ask for Martin at extension 1179. I've found their prices to be the best 90 percent of the time.

About the author: Sean Caldwell is an international voiceover talent and manages a production company based in Tampa, Florida. He works with networks like CNN, the Weather Channel, Fox Sports, and many others. Need a voice for your podcast? If you have a little money to spend, you can get some great sounding show opens and add a professional feel to your podcast. Contact him through www.seancaldwell.com

Last updated 5-2006