Archive 'Balanced connections'

As we have already mentioned, a protocol defines all communication aspects between two MIDI systems both in terms of hardware (sockets, cables, connectors, transmission modes) and software (MIDI commands).

What we have discovered so far with regards to noise is far from encouraging. Noise shows up in pretty much all work circumstances, but it is a nuisance we must absolutely get rid of, or at least cut down as much as possible.

There are audio signal generators that have very high internal impedance values, and are therefore difficult to manage by the means we have mentioned up until now and with common amplifiers. A high internal impedance in fact means loss of voltage on the transferred signal; very rarely will an amplifying stage have an input impedance which equals at least 10 times the one inside the signal generator.

Via the channels, the signal is picked up, manipulated and sent to the destinations we will shortly take a look at. In actual fact, every one of the mixer's channels contains two channels, but for the moment let's pretend there is only one, and concentrate on this single channel only.

TRS - Tip Ring Sleeve. We have already mentioned the 1/4" jack connectors used in unbalanced connections (jack mono –TS) and balanced connections (jack stereo TRS).

These are used to transmit electric signals. Sometimes the signals to be transported have such a low voltage that they are highly exposed to both electrostatic and electromagnetic interferences, and therefore technical solutions for the reduction of such interferences are introduced in the creation of the wires.

Electronics history has been marked by the introduction of components that have opened the doors to new solutions and technology. The real revolution took place with the transistor, preceded by the diode, which marked the definitive birth of digital electronics, leading to the introduction of microprocessors.