# algorithmic and convolution reverb

Post on 16-Jul-2015

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Compare and contrast an algorithmic and convolution reverb. Demonstrate the difference and the important features in both types of reverb.

Compare and contrast an algorithmic and convolution reverb.

Demonstrate the difference and the important features in both types of reverb.

ObjectivesTo compare and contrast an algorithmic and convolution reverb. To provide you with an understanding of the differences and important features of both types of reverb.

My name is Subrina. I decided to teach this because as I was listeningto the video lecture on convolution, the word space kept comingback to me and I recall my own dance lessons and I often tell students,when you choreograph you want to listen to the space in the musicand it is within these spaces, you come up with yet another dancemove. So I felt that by teaching this, I will somehow obtain a brandnew understanding of space in the context of composing music. Please enjoy the presentation and thank you for reading. ReverbBefore we try to understand algorithmic andconvolution reverb, let us explore reverb. Whatis reverb?

Answer: Reverberation, or reverb for short,refers to the way sound waves reflect off varioussurfaces before reaching the listener's ear.

Reverb Explained

The diagram on the left shows one person (the sound source) speaking to another person in a small room. Although the sound is projected most strongly toward the listener, sound waves also project in other directions and bounce off the walls before reaching the listener. Sound waves can bounce backwards and forwards many times before they die out. When sound waves reflect off walls, 2 things will happen:-

1. They take longer to reach the listener.2. They lose energy (get quieter) with every bounce.

Reverb Explained:-The listener hears the initial sound directly from the source followed by the reflected waves. The reflections are essentially a series of very fast echoes, although to be accurate, the term "echo" usually means a distinct and separate delayed sound. The echoes in reverberation are merged together so that the listener interprets reverb as a single effect.

In most rooms the reflected waves will scatter and be absorbed very quickly. People are seldom consciously aware of reverb, but subconsciously we all know the difference between "inside sound" and "outside sound". Outside locations, of course, have no walls and virtually no reverb unless you happen to be close to reflective surfaces.

Some rooms result in more reverb than others. The obvious example is a hall with large, smooth reflective walls. When the hall is empty, reverb is most pronounced. When the hall is full of people, they absorb a lot of sound waves so reverb is reduced.

Reverb, is it necessary?Now that we have a better understanding ofwhat reverb means, the next question to askourselves is, why do we use reverb?

Why do we use Reverb? Reverb is most commonly used to put elements of your song in a particular space like a small room or hall etc. Reverb can also be used to add depth to certain elements in your mix, essentially making some elements sound further away, while the other elements with less or no reverb will be perceived as more upfront in the mix.