Abbrev | Shorthand for | Explanation |
AB | Audiobus | An IOS software that allows to connect audio and midi application. Currently using the IAA protocoll for inter process communication. The AB app supports AU plugins and offers application switching and application state saving and remote control (see Audiobus features) |
AB3 | Audiobus 3 | Third version of the AudioBus protocoll |
ABF | Audiobus Forum | The main forum for IOS musicians and developers |
AD | Audio Damage | A company offering audio plugins |
AD | Attack Decay | A synthesizer envelop module with attack and decay parameter |
ADSR | Attack Decay Sustain Release | A synthesizer envelop module with standard parameters, mainly used to shape the sounds amplitude with a VCA or the overtone amount with a VCF |
AM | Amplitude Modulation | Sound synthesis: Modulating the volume of an audio signal with another audio signal (Wikipedia) |
AP | Auria PRO | An audio and MIDI workstation app |
ARP | Arpeggio | A synthesizer module that breaks chords into a sequence of notes |
AT | Aftertouch | A midi message allowing to add additional pressure information to notes (per midi channel). The AT midi message affects all currently playing notes - there is a Poly Pressure midi message to allow per note pressure information |
AU | Audio Unit | Apples audio plugin format for Audio and Midi plugins, currently version 3 (AUv3) |
AU Host | Audio Unit Host | An application that can load plugins in the AUv3 format |
AUM | Audio Mixer | An audio mixing app (like Audiobus) with support for user defined channel routing, supports IAAs and AUv3. AUM itself can be loaded in Audiobus to achieve state saving and process switching for IAAs |
AUv3 | Audio Unit Version 3 | Apples audio plugin format for Audio and Midi plugins, there are several plugin subtypes types depending on the inputs and outputs of the plugin (see AU features, or for list of AUs and hosts) |
BM3 | Beat Maker 3 | An audio and MIDI workstation app |
CC | Control Change | A group of 119 midi message for parameter changes, sometimes also named continuous controller |
CCK | Camera Connection Kit | A dongle to connect USB devices like audio or midi interfaces to the lightning port |
CPP | Chord Poly Pad | A MIDI chords player app with AB3 state-saving support |
CV | Control Voltage | Analog modular synthesizers use voltages to modulate the sound generation - mainly 1 volt/octave in Eurorack Modular Synth. The counterpart in the digital world are midi CC send between plugins. (see Wikipedia) |
DAW | Digital Audio Workstation | A software used for recording, editing and producing audio files. (see Wikipedia) |
EG | Envelop Generator | A synthesizer module generating a control voltage that varies over time. The start of the envelop is triggered by either a trigger pulse or a gate signal (see Wikipedia). There are different types of envelops like AD, ADSR |
ENV | Envelop Generator | See EG |
EQ | Equalizer | A plugin or app adjusting the balance between frequency components (Wikipedia) |
FF | FabFilter | A company offering audio plugins |
FM | Frequency Modulation | Sound synthesis: Modulating the frequency of an audio signal with another audio signal generates interesting (often inharmonic) overtones (Wikipedia) |
GB | Garage Band | Apples free audio and MIDI workstation app |
IAA | Inter-App-Audio | An Apple audio / midi protocoll to connect stand-alone, fullscreen applications (see IAA features) |
LFO | Low frequency Oscillator | A synthesizer module that generates cyclic control voltages with a frequency below 20 Hz (see Wikipedia) |
MIDI | Musical Instrument Digital Interface | A technical standard that describes a communications protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and related audio devices for playing, editing and recording music. Each midi connection supports 16 channels to unidirectional transmit information. There are 8 types of messages. (See Wikipedia) |
MOD | Modulation | Midi CCs and analog CV signals can be used to vary/modulate sound generation parameters |
MPE | MIDI Polyphonic Expression | Part of the latest midi standard. It defines how to apply per note pitch bend and other controllers. Basically each each note gets its own midi channel and all information on that channel are related to just that note. The midi channel 1 (or 16) is reserved for control messages - two MPE instruments may share a 16 channel midi connection |
NS2 | Nano Studio 2 | An app for IOS music production |
OSC | Oscillator | A synthesizer module for generating audio signals. Audible signals are mainly generated by VCOs, control signals by LFOs |
PB | Pitch Bend | A midi message to specify pitch bending - the value is applied to all playing notes of the midi channel |
PC | Program Change | A midi message to change instrument patches (per midi channel) |
PP | Poly Pressure | A midi message specifying per note pressure information (per midi channel) |
RM | Ring Modulator | A synthesizer module applying multiplication between audio signals resulting in inharmonic overtones |
SB | Sugar Bytes | A company offering audio plugins |
SEQ | Sequencer | A synthesizer module that sends out notes and control voltages in discrete steps. The sequencer itself can be triggered with a clock of lfo signal |
S&H | Sample & Hold | A synthesizer module that takes a sample from an input signal and holds this value until the next control pulse (see Wikipedia) |
VCA | Voltage Controlled Amplifier | A synthesizer module controlling the audio volume using control voltages. Most common modulator is an envelop generator to shape the sound |
VCF | Voltage Controlled Filter | A synthesizer module for filtering audio signals where the cutoff frequency is controlled by a control voltage |
VCO | Voltage Controlled Oscillator | A synthesizer module for generating audio signals where the frequency is controlled by a control volage. Often additional sound generation parameters like pulse width, slope or waveform can be controlled by other control voltages (see Wikipedia) |