Ibis: Week 3, Introduction to Music Production. Audio Effects.

Hi, my name is Ángel Ibis Ortiz, I’m from Querétaro, México. Today I'll write about audio effects

We have three categories of effects:

Filters

These control the timbre of the sound. Are usually connected directly to the channel or on a sub-mix.

High Pass Filters, Low Pass Filters and Band Pass Filters can cut frequencies.

Low Pass Filter

High Pass Filter

Band Pass Filter

Graphic EQ can increase and decrease the amplitudes of the frequencies.

And Parametric EQ can do all of this.

Dynamic

Are related to the amplitude. Are used to control or manipulate the dynamic range of a signal. These usually connect directly on the channel or on a submix.

The compressor is used to make loud sounds softer and soft sounds louder.

A limiter is a compressor with a higher ratio, making the signals that exceed the threshold, no longer heard.

The gates attenuate the noise floor, allowing passage only to sounds that exceed the threshold.

Expanders unlike a compressor, make soft sounds softer and the strong stronger.

The de-esser, which are frequency selective compressors, are used to reduce sibilant frequencies.

Delay

They are related to the propagation of sound. Are used to alter the timing of the signals passing through them. The altered signal is usually combined with the original signal to create different effects. Usually these processes are connected by an auxiliary bus.

The delay keeps the audio signal for a certain period of time. The signal can be routed back to the processor to be re-traced over and over.

The effects of phaser, flanger and chorus are essentially delays with modulation parameters such as depth, speed and waveform. The reverbs are designed to mimic the reflections that exist in a natural environment.