donderdag 19 november 2015

What is signal-to-noise ratio?

Can you remember the last time you heard an outstanding dialogue recording? Perhaps it came from a movie, or a memorable interview. What was it that made the recording so great?

There are several factors that come together to form fine dialogue recordings: The voice, or voices, will come through clear as crystal, completely audible, and there would have been a distinct lack of background noise.

Now try to think of an occasion where you heard poor quality audio. The same question applies: What made it so terrible? Perhaps it was too soft, the source too distant, or the presence of background noise ruined the experience entirely. 
What you've just identified, maybe without even realising, is just how important a good signal-to-noise ratio can be.

Signal-to-noise ratio (SNR) is the measurement used to describe how much desired sound is present in an audio recording, as opposed to unwanted sound (noise). This nonessential input could be anything from electronic static from your recording equipment, or external sounds from the noisy world around us, such as the rumble of traffic, or the murmur of voices in the background.
Luckily, it's possible to avoid unwanted noise from interfering with the quality of your audio. The following is a simple guide explaining just how to maximise SNR for any scenario.  

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