The World of MIDI

The World of MIDI

“MIDI is a technical standard that describes a protocol, digital interface and connectors and allows a wide variety of electronic musical instruments, computers and other related devices to connect and communicate with one another. A single MIDI link can carry up to sixteen channels of information, each of which can be routed to a separate device.”

There’s a misconception about the use of MIDI. It is often referred to describe 8-bit video game sounds, artificial drums etc. But the truth is that MIDI is just a language not a sound.

This language may enable the communication between a tube amp and a DAW such as Cubase. Even between your smart phone and your soft synth inside the DAW.

So, what can this language convey between devices?

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Signal Chain Explained

signal chain

Guitar signal travels a lot before it hits your ears.

Guitar signal is generally picked by guitar pickups. Here, physical movement of the strings are transformed to electrical signal by pickups. This signal is very weak. Either it is a passive pickup or active, this signal is not audible or in other words it cannot drive a speaker cone.

This signal needs to be amplified by amplifiers in order to drive the speakers. So that we can hear it. But is it pure amplification what we need? What we got used to hear on all those great records?

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Impulse Response for Cab Simulation

“The impulse response (IR) of a dynamic system is its output when presented with a brief input signal, called an impulse. More generally, an impulse response refers to the reaction of any dynamic system in response to some external change. In both cases, the impulse response describes the reaction of the system as a function of time.” says Wikipedia.

But what do we -as guitar players- do with this information?

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