uncompressed audio to most listeners. It was invented by a team of European engineers
who worked in the framework of the EUREKA 147 DAB digital radio research program and
finally standardized by ISO/IEC in 1991
•
OGG -
Ogg
is a patent-free, fully open multimedia bit stream container format designed for
efficient streaming and file compression (storage).The name "Ogg" refers to the file format
which includes a number of separate independent open source codecs for audio, video and
text (e.g. subtitles). Files ending in the .ogg extension may be of any Ogg media file type,
and because the format is free, Ogg's various codecs have been incorporated into a number
of different free and commercial media players.
FREQUENCY
The rate at which an acoustic generator, electrical signal, or vibrating mass repeats a cycle of
p and negative- going amplitude. The number of cycles that occurs over the period of one
second is measured in hertz (Hz). Often, the perceived range of human hearing is from 20 Hz to
18,000 Hz.
GAIN
Amount of amplification in dB.
GUI
A graphical user interface (or GUI, often pronounced "gooey") is a method of interacting with a
computer through a metaphor of direct manipulation of graphical images and Virtual Live Controls
in addition to text. GUIs display visual elements such as icons, windows and other gadgets. The
precursor to GUIs was invented by researchers at the Stanford Research Institute (led by Doug
Engelbart) with the development and use of text-based hyper links manipulated with a mouse for
the On-Line System. The concept of hyper links was further refined and extended to graphics by
researchers at Xerox PARC, who went beyond text-based hyper links and used GUIs as the primary
interface for the Xerox Alto computer. Most modern general-purpose GUIs are derived from this
system. For this reason some people call this class of interface a PARC User Interface (PUI) (note
that PUI is also an acronym for perceptual user interface). The PUI consists of graphical Virtual
Live Controls (often provided by Virtual Live Control toolkit libraries) such as windows, menus,
radio buttons, check boxes and icons, and employs a pointing device (such as a mouse, trackball
or touchscreen) in addition to a keyboard. Those aspects of PUIs can be emphasized by using the
alternative acronym WIMP, which stands for Windows, Icons, Menus and Pointing device.
The GUI familiar to most of us today is either the Windows or the Macintosh operating systems and
their applications originated at the Xerox Palo Alto Research Laboratory in the late 1970s. Apple
used it in their first Macintosh computers. Later, Microsoft built on many of Apple's ideas in their
first version of the Windows operating system for IBM-compatible PCs.
HARD DISK RECORDER
A system that uses a computer hard disk to record, edit, and reproduce digital data.
INSTRUMENT
A collection of plug-ins that starts with a MIDI input, then goes through optional MIDI effects, into
a soft synth, and then into optional audio effects before going out to an audio bus. An instrument
is set up anytime a user wants to play a soft synth.
LATENCY
Latency is the amount of time an application allocates to prepare a buffer full of audio data for
playback. Lower latency settings add processing time because of the need to refill the smaller data
buffers more often. You may need to increase your applications latency under the following
conditions:
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