![]() There are a series of tradeoffs inherent in any of these primitive solutions: Filters effect tone and rarely stand up to broadband noise, while conventional expander/gates are only really effective if the noise level is quiet enough to begin with, so that it’s masked by the desired signal once the gate opens.īut the tools of the trade took a huge step forward when Dolby released the Cat43. Basic expansion or gating could even push low-level noise down further, making the noise floor seem to disappear. A high-pass filter could allow you to fight rumble and plosives, a low-pass might help tame hiss, and a series of notch filters could help with 60-cycle hum. Not long ago, if you wanted to clean up noise your primary option would have been to employ simple filters, expanders and noise gates. We put a few of the most popular of these plugins through their paces to find out how they stack up. Some of them, like Sony’s Spectral Layers, will even let you “Unbake The Cake,” by removing not just broadband noise and ambience, but individual sounds and instruments from within a single track. On today’s market, you’ll find a few of the most powerful sonic-scrubbers ever devised, with prices that range from $100, right on up to near $10,000. Fortunately, the tools have been keeping up with the increased demand. Music is increasingly tracked in home studios where refrigerators hum, amps buzz and cars zip by outside windows a growing amount of video is shot remotely on makeshift sets where booms and lavs won’t go, camera preamps hiss, and ambient noise can begin to overwhelm.Īll this conspires to make audio cleanup a recurring task for engineers who rarely had to deal with these jobs in the past. ![]() In a controlled environment, like a recording studio or a film set, you’re blessed with a quiet space, clean power and revealing monitors, so that isn’t too difficult to do.īut these days, for better and for worse, more audio is being recorded in compromised environments than ever before, and at every level in the industry. The best way to deal with a troublesome noise is to avoid recording it in the first place.
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