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Compare and Contrast an Algorithmic and Convolution reverb Maths Dx [Best viewed in Full Screen Slide Show]
Introduction Hi, I’m Maths Dx from a far away galaxy on the Internet. This lesson is for Week 5 of Introduction to Music Production at Coursera.org. Today, I will be covering the topic as concisely as possible. All the salient points of the topic are presented so that it is also an easy-reference for later use– you can also download it. I will be reviewing 2 categories of reverbs: Algorithmic & Convolution reverb The Algorithmic reverb creates the impression of a space from an algorithm or formula much like a synthesizer creates sounds from mathematical and physic algorithms. The Convolution reverb is on the other hand, a recording of a real space applied to the sound being processed. This is analogous to a sampled instrument when compared to the Algorithmic reverb being likened to a synthesizer.
1. Algorithmic Reverb • For the Algorithmic Reverb, lets have a look at the Valhalla Room reverb. • Divides the room space into 2 separate components • Early reflections – set of short delays • Late reflections or diffuse reverb
1. Algorithmic Reverb (cont’d) • One can choose the parameters and this is shown as room size and also ambiences as presets
1. Algorithmic Reverb (cont’d) • Let’s examine some of the main controls on this reverb • Mix – controls the balance of the input signal with the reverb • Predelay – sets the amount of delay before reverb • Decay – sets the reverb decay time for mid frequencies • High Cut – controls the cutoff frequency of a lowpass filter processing the reverb output • Depth – controls the perceived distance from the source by adjusting the balance between early and late energy
2. Convolution Reverb • Let’s examine the LiquidSonics Reverberate
2. Convolution Reverb (cont’d) • With a Convolution Reverb, the main control element is in choosing an Impulse Response • The Impulse Response is the recording of a real space that is applied via the convolution algorithm • Here are the options of spaces that one can choose. It is just a matter of choosing a space that best fits your music • Convolution reverbs can run the gamut from realistic room spaces to dramatic and exotic sound spaces.
2. Convolution Reverb (cont’d) • In LiquidSonics Reverberate, the user is also able to control additional parameters like EQ, Delay and Chorus and mix between 2 IRs. • There are much less variable controls compared to the Algorithmic Reverb, but then, a more realistic space is approximated and delivered
Main Differences between Algorithmic and Convolution Reverbs
Summary Thank you for reading through this and I hope that this will be a useful reference as part of your music production.