Part 2 Digital Audio Principals

7/29/2019 Part 2 Digital Audio Principals

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EQ AND VOLUME LEVEL

WHAT ARE THE 3 VARIABLES IN A FULLY PARAMETRIC EQ?


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EQ AND VOLUME LEVEL


- FREQUENCY


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EQ AND VOLUME LEVEL


- FREQUENCY

- BAND WIDTH / Q VALUE


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EQ AND VOLUME LEVEL


- FREQUENCY


- DB BOOST OR CUT


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EQ AND VOLUME LEVEL


- FREQUENCY


- DB BOOST OR CUT

LETS LOOK AT THE LOGIC EQ TO DEMONSTRATE.


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1. FREQUENCY, 2. BANDWIDTH / Q FACTOR, 3. DB BOOST /

CUT


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ACTIVE FREQUENCY RANGE


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DIFFERENT INSTRUMENTS HAVE DIFFERENT ACTIVE FREQUENCIES.


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BY UNDERSTANDING THIS YOU CAN CUT OR REDUCE INACTIVE

FREQUENCIES.


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FREQUENCIES.

THIS WILL GIVE YOU MORE ???????? IN YOUR MIX?


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FREQUENCIES.

THIS WILL GIVE YOU MORE HEADROOM IN YOUR MIX?


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FREQUENCIES.

THIS WILL GIVE YOU MORE HEADROOM IN YOUR MIX?

BECAUSE BY REDUCING GAIN OR DB LEVEL OF A FREQUENCY YOU

ARE DECREASING THE OVERALL VOLUME OF YOU MIX.


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COMPRESSION PARAMETERS

WHAT IS AUDIO COMPRESSION?


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THE REDUCTION IN THE ???????????? OF AN AUDIO FILE IN ORDER

TO INCREASE THE OVERALL ??????


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THE REDUCTION IN THE DYNAMIC RANGE OF AN AUDIO FILE IN

ORDER TO INCREASE THE OVERALL ??????


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ORDER TO INCREASE THE OVERALL VOLUME


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WHY DO WE USE COMPRESSION?


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WHY DO WE USE COMPRESSION?

TO EVEN OUT AUDIO LEVELS AND REDUCE SPIKES IN OUR MIXES.


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COMPRESSION THRESHHOLD AND MAKE UP GAIN

THIS IS AN EXCELLENT VIDEO, I THINK, WHICH GIVES A VERY CLEAR

EXPLANATION, WITH EXAMPLES OF WHAT THESE TERMS MEAN

COMPRESSION THRESHOLD AND OUTPUT/MAKE UP GAIN
http://www.youtube.com/watch?v=Z-CoFUvj9Q0&noredirect=1http://www.youtube.com/watch?v=Z-CoFUvj9Q0&noredirect=1


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COMPRESSION THRESHHOLD AND MAKE UP GAIN

THIS IS AN EXCELLENT VIDEO, I THINK, WHICH GIVES A VERY CLEAR

EXPLANATION, WITH EXAMPLES OF WHAT THESE TERMS MEAN

COMPRESSION THRESHOLD AND OUTPUT/MAKE UP GAIN

I WILL COME BACK TO WHAT WE MEAN BY THE COMPRESSION RATIO
http://www.youtube.com/watch?v=Z-CoFUvj9Q0&noredirect=1http://www.youtube.com/watch?v=Z-CoFUvj9Q0&noredirect=1


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COMPRESSION RATIO


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COMPRESSION RATIO

IN LAYMANS TERM THE COMPRESSION RATIO INDICATES HOW

SEVERELY THE AUDIO FILE IS COMPRESSED


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COMPRESSION RATIO



EG; AT A LOW RATIO SUCH AS 2:1 ANY AUDIO SIGNAL ABOVE THE

THRESHOLD IS GENTLY REDUCED.


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COMPRESSION RATIO




THRESHOLD IS GENTLY REDUCED. AT HIGHER RATIOS SUCH AS 10:1

OR HIGHER SIGNAL ABOVE THE THRESHOLD IS SMACKED DOWN

HARD.


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COMPRESSION RATIO




THRESHOLD IS GENTLY REDUCED. AT HIGHER RATIOS SUCH AS 10:1

OR HIGHER SIGNAL ABOVE THE THRESHOLD IS SMACKED DOWN

HARD.

THE GREATER THE RATIO, THE GREATER THE COMPRESSION.


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COMPRESSION RATIO

IN NON LAYMANS TERMS..


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COMPRESSION RATIO


MATHS!


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COMPRESSION RATIO


MATHS!


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COMPRESSION RATIO


MATHS!

RATIO OF 3;1


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COMPRESSION RATIO


MATHS!

RATIO OF 3;1 FOR EVERY 3 DBS THE SIGNAL IS ABOVE THE

THRESHOLD ONLY 1DB IS ALLOWED TO PASS

THROUGH THE COMPRESSOR.


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COMPRESSION RATIO


MATHS!




RATIO OF 10:1 FOR EVERY 10 DBS THE SIGNAL IS ABOVE THE

THRESHOLD ONLY 1DB IS ALLOWED TO PASS THROUGH

THE COMPRESSOR.


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COMPRESSION RATIO


MATHS!




RATIO OF 10:1 FOR EVERY 10 DBS THE SIGNAL IS ABOVE THE

THRESHOLD ONLY 1DB IS ALLOWED TO PASS THROUGH

THE COMPRESSOR.

RATIO OF : 1 FOR EVERY DBS THE SIGNAL IS ABOVE THETHRESHOLD ONLY 1DB IS ALLOWED TO PASS THROUGH

THE COMPRESSOR.


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COMPRESSION RATIO OF : 1


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IS WHATS KNOWN AS A LIMITING


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IS WHATS KNOWN AS A LIMITING

A LIMITER IS AN EXTREME FORM OF COMPRESSOR.


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COMPRESSION ATTACK AND RELEASE


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COMPRESSION ATTACK AND RELEASE

When a sound overshoots the volume threshold, the compressor does

not instantly apply the full compression to the overshooting signal.

Instead, the compression ratio increases gradually from 1:1 to the

maximum within a certain amount of time. This time is called the attack

t ime.


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When the sound drops back below the threshold,the compressor does not instantly stopcompressing the sound. Instead, it graduallyreduces the compression ratio until it reaches 1:1

again. This time is called therelease time

.


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When the sound drops back below the threshold,the compressor does not instantly stopcompressing the sound. Instead, it graduallyreduces the compression ratio until it reaches 1:1

again. This time is called therelease time

.


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THIS IS NOT A THEORETICAL EXERCISE.


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YOU MUST PUT THESE PRINCIPALS INTO PRACTICE AND

DEMONSTRATE YOUR UNDERSTANDING VIA YOUR BLOG WORK


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EXPERIMENT WITH THESE IMPORTANT TOOLS (EQ AND

COMPRESSION)


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EXPERIMENT WITH THESE IMPORTANT TOOLS (EQ AND

COMPRESSION)

FURTHER RESEARCH IS ESSENTIAL FOR A FULL UNDERSTANDING.

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Part 2 Digital Audio Principals