list of acronymns - suggest

Started by Baday12345, December 14, 2012, 09:50:59 AM

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Baday12345

....a list of commonly used acronyms, terms and descriptions could help the non power users in the group understand some of the dialogue and "shop talk".

PCM, 4CM, etc. etc.

;D

Elantric

#1
Quote....a list of commonly used acronyms, terms and descriptions could help the non power users in the group understand some of the dialogue and "shop talk".

PCM, 4CM, etc. etc.

http://tweakheadz.com/guide.htm

http://www.mackie.com/pdf/glossary.pdf

http://wiki.fractalaudio.com/axefx2/index.php?title=Glossary_and_resources

Quote
Glossary & Resources

4CM: See "Four Cable Method."

A/D, D/A Converter: Analog-to-Digital or Digital-to-Analog Converter

ADSR: Technically, this stands for Attack, Decay, Sustain, Release but used as a noun it refers to an Envelope Generator which, when "triggered," produces a control signal that can be used to change parameter values in a way that is predictable over time. Envelopes are typically "one-shot," meaning they play through and stop. But when set to loop, they can behave more like LFOs (below).

AES/EBU: Audio Engineering Society/European Broadcasting Union. The name applied to a professional audio interface used for transferring digital audio between devices. AES for short. AES and S/PDIF both supply the same audio data with slight differences in the frame bits.

Aliasing: Aliasing in digital audio refers to the phenomenon that happens when we try to reproduce frequencies higher than one-half the sampling rate. See http://www.earlevel.com/main/1996/10/20/what-is-aliasing for an excellent description.

Balanced/Unbalanced: Balanced refers to audio signals designed to be carried over a three-conductor cable, which minimizes unwanted noise and interference. Cables designed to carry balanced signals are called Balanced Cables and usually use the XLR or Tip-Ring-Sleeve (TRS) connector end-types.

BPM: Beats per minute. A measure of musical tempo. The typical human heartbeat is about 60—80 BPM.

CPU: Central Processing Unit.

dB: Decibels. The unit for measuring sound intensity, or loudness. You'll see this on level or volume parameters. There are abundant resources about the science behind loudness, but simply making a few adjustments can get your dB sense going.

DSP: Digital Signal Processor/Processing.

Feedback: When an output is connected to an input, feedback occurs. The connection might change mediums, as it does when sound travels from an amp's speaker through the air to excite guitar strings connected to that amp's input. It can also be direct, such as when some of the output of a flanger or phaser is routed back to the effect's input. Feedback is also sometimes known in the effects world as "regeneration" and, less aptly, "resonance."

Four Cable Method (4CM): A rig design where the DSP Guitar Effect is used both "in front of" and inside the effects loop of a tube amp.

FRFR: "Full range, flat response." This acronym is used to describe a "neutral" speaker or speaker system that is designed to reproduce the entire audible spectrum of 20 Hz — 20kHz without emphasis or de-emphasis. It is invariably an approximation.

Hz: Hertz. The number of times something happens in one second. 4 Hz = 4x/second. Low values for Hz are useful to describe RATES—the "speed" of a slow phaser's sweep might be 0.33 Hz, for example (once every three seconds). Hz are also the units used to plot low and high-frequency sounds. At the top of the frequency scale, units of kilohertz (kHz or just "k")—thousands of cycles per second—are more useful. You will see both Hz and kHz on equalizers, filters, and other effects that deal with sound as a "spectrum" of frequencies. With a little time, you'll learn to match the numbers with their effects on a sound. Check the web for more info, such as The Guitar Player Book (2007, free on Google Books), or get yourself this cool t-shirt from Rational Acoustics:

I/O: Stands for "Input/Output."

IR: An Impulse Response file is a collection of data representing sound measurements taken from a speaker cabinet or system and used by some DSP Amp modellers to enable the Cabinet block to emulate a particular speaker cabinet. A test signal is played through the actual speaker, recorded, and used to generate a profile utilized by the  DSP Amp modeller to reproduce the measured response.

Latency: In terms of effect processors, latency is an unwanted delay between what you play and what you hear.

LFO: Low Frequency Oscillator. An LFO creates control signals used to periodically change sounds in real time. The back-and-forth sweep of a flanger or phaser, the sharp-flat wobble of a chorus, and the loud-soft pulse of tremolo are each the result of an LFO at work.

MIDI: Musical Instrument Digital Interface.

ms: Milliseconds. Thousandths of a second. 500 ms is one half-second. 100 ms is 1/10th of a second.

pF: Picofarads. You'll only see it on one parameter, the amp's BRIGHT CAP value, where it affects treble response.

Phantom Power: By leveraging an unused pair of copper wires inside of a MIDI or other cable, the Phantom Power system allows a single cable to carry both MIDI data and power between the Axe-Fx II and a connected floor unit.

Phase: This term is used to describe the position of one waveform relative to another. When two similar waves are in phase, their peaks and valleys will line up exactly, reinforcing one another. Waves that are out of phase have their peaks and valleys in opposition, so while one is headed up, the other is headed down. An LFO Phase control settings allows left and right sweeps to be either synchronized or offset from one another. An Audio Phase control, (such as the one in the Enhancer block or the PHASE REVERSE parameters of the Delay, Chorus, Flanger, and other effects) flips the polarity of an audio signal. (Some might say this turns the waveform upside down.) Combining two identical audio signals of opposite phase results in complete silence, explaining why you need to be careful when summing to mono any preset with blocks that invert phase or shift time alignment.

Resonance: Resonance is an increase in amplitude around certain frequencies. It results in the intensification or prolongation of certain components of a sound. In the Axe-Fx II, it is most commonly used in descriptions of the "Q" parameter of a filter or parametric equalizer. At lower values, Q determines the slope of the effect, and at higher settings, Q impacts the width and height of a peak that forms around the cutoff or center frequency.

S/PDIF: Sony/Philips Digital InterFace

Semitones/Cents ("ct" or "cts"): Used to measure musical pitch. A semitone is one half-step, a.k.a. 1/12th of an octave—the difference heard from one guitar fret to the next. A cent is 1/100th of a semitone—extremely small in terms of your ability to hear a difference. You'll see these units on the Axe-Fx II Pitch Shifter and Synthesizer.

SysEx: Short for System Exclusive. A type of MIDI data that can be understood only by the particular make and model of MIDI device that created it.

and
Analog Synthesis Primer
https://www.vguitarforums.com/smf/index.php?topic=6418.0

Elantric



Elantric