Whether you are trying to have a dialogue in a busy café, phone call or a live recording, distracting noises can a be a nightmare to deal. A good sound is the holy grail of any one who works in sound on a daily basis. However, sound professionals have to contend with poor sound on a regular basis, regardless of who recorded the audio clip, professional or complete novice.
These noise anomalies stand in the way of effective communication. Therefore, audio restoration is the process of removing sound imperfections. Even the most experienced sound professional will agree that you cannot run away from noise problems. That’s why audio restoration services play such a crucial role.
Most recordings depreciate with age and overuse especially old phonographic ones. They develop crackles, clips, pops and surface noise that makes it hard to pass their message. The aim of audio restoration is to get behind this incoherent noises to bring out the message that was recorded. It is akin to removing films of dirt on a mirror that was making the image dull and blurry. A good polish will make the image clear for everyone to see.
The goal of audio restoration is to get the recording whether voice or music to its original quality. However, some noise has to be left in cases where it is close in character to the desired sound. The sound professional cleaning an old recording has to make judgement to know what needs to be removed and what is to be retained. This delicate balancing act is what makes a good recording perfect.
There are many reliable tools out there that can help you to get rid of noise problems.
Different types of noise requires different types of tools use. Most of these tools you may have in your studio such as
- multiband compressors
- spectral editors
- dialog noise suppressors
- high-quality spectrum analyzer
Types of noise
This is a steady stream of noise that affects multiple audio frequencies at one time. The common types of this background include tape hiss and background chatter. Broadband is trickier to solve because it occupies various frequencies. EQ is most preferred method of solving this tonal problem.
Total noise exhibits a constant and fixed frequency. For instance, 60-cylce and electrical buzz. This is perhaps the easiest to solve because a single frequency band. A notch filter should be your first line of defense. Just two plug-ins; a liner phase EQ and a spectrum analyzer. You first need to identify the source of noise and its frequency
When you need denoisers
Sometimes EQ might not effectively help you to get rid of irritant noise. That’s when you need to get out the real deal, denoiser plug-in. They include Sonnox De-noiser and Z-Noise. They might help to get rid of the offending noise. WNS noise suppressor is also a great choice plugin to remove noise problems in voice overs, dialog and interviews