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Key Audio terminology


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Frequency

Frequency is the number of waveforms generated in one second

Human audio range is between 20hz - 20Khz

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Amplitude

How much the sound wave fluctuates up and down

Files with smaller fluctuations will be softer and bigger fluctuations will be louder

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Sample Rate

The higher the sample rate the more detail in the audio

Film and TV use a sample rate of 48,000 Hz (48 kHz)

CD's will generally use 44.1 kHz

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Bit Depth


Audio Levels


-18 dB Minimum audio range for dialogue

Info
titleBackground noise

A good starting point for background, ambient audio is to set the levels around -24 to -34 to start with then adjust according to the rest of your mix


-12 dB Average audio levels for dialogue

Info
titleAverage

All dialogue should average around -12 dB (give or take a range of 4 dB)


-6 dB Maximum audio range for dialogue

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titleSpot Effects

If you are looking for impact relative to the average audio range then -6 dB is a good range for spot effects - ie. a gun shot, a door slamming, etc.


0 dB - Distortion

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titleDistortion

You have run out of audio information at this point, the export will crunch the data and you will have terrible sounding distorted audio


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