Yamaha AW2816 Tutorial - Página 29

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1. Recording on the Aw2816

Glossary

Gain

A knob that adjusts the sensitivity of the head amp

(*see entry) in the input section of the AW2816. If this

control is adjusted to keep the input volumes consis-

tent at this point, it will be easier to use the faders of

each channel to create a balance.

Head amp (HA)

A circuit placed before the A/D converter (*see entry)

of an AW2816 input jack, used to adjust the analog

input signal to a level that is suitable for digital con-

version. (Also called mic preamp.)

Impedance

Resistance to alternating current. In general, this refers

to the load of a signal input or output. The input/out-

put jacks of the AW2816 have speciﬁc impedances

depending on their type or intended input/output sig-

nal, and must be connected to a device of the same or

similar impedance. Even if its cable connector has the

same form as a line input, a high-impedance source

such as a guitar must be connected to a high-imped-

ance jack, not to a regular input.

Internal arithmetic precision (bits)

The arithmetic precision with which digital signals are

processed inside a device. The AW2816 uses 32 bit

arithmetic internally, guaranteeing an excellent

dynamic range (*see entry) of 192 dB.

Jitter

When digital audio signals are transferred, the word

clock (*see entry) of the devices must match. If this

word clock is not generated accurately, a type of noise

called jitter will occur. Less variation in the word

clock rate as compared to a square wave with precise

spacing (i.e., a more stable clock) will mean less jitter

and better audio quality.

Library

Preset settings for the AW2816's equalizers (*see

entry), dynamics processors (*see entry), and the two

effect units, created with a wide range of uses in

mind.

Limiter

An effect that limits the volume to prevent overload

when the input sound exceeds a speciﬁed threshold.

Mastering

The process of adjusting the overall tone and volume

of a song that has been mixed down. On the

AW2816, the term is used in reference to the process

up to creating an audio CD.

Mini YGDAI

The YGDAI (*see entry) input/output expansion slot

found on the rear panel of the AW2816.

Mixdown

Also called "track down." The process of combining

multiple tracks of sound into a ﬁnal two-track mix that

can be played back on an audio CD player, etc.

MMC (MIDI Machine Control)

A group of MIDI messages used to control recorder

operations such as Play, Stop, and Record.

Monitor

The headphones or speakers used to reproduce the

sound that is output from the AW2816. Also used to

refer to the act of listening to the playback from the

headphones or speakers.

Moving faders

Faders that automatically move to a position that cor-

responds to the value of the parameters that were

recalled, for example when you switch the selection

of the MIXING LAYER section or recall another scene

from scene memory. On the AW2816, all nine faders

(including the ST channel) are moving faders. This is

very convenient, since the faders will move according

to the parameter changes during automix, providing

visual conﬁrmation of the mixdown status.

MTC (MIDI Time Code)

A type of MIDI message used to convey time data in

realtime over a MIDI cable, in order to synchronize

the operation of the AW2816 and devices such as

rhythm machines, sequencer software, or other

recorders.

Nominal level

The "nominal level" referred to on a mixer or recorder

indicates the standard level setting for that device.

When all parameters are set to the nominal level, the

audio quality will be the closest to the speciﬁcations

given in the catalog.

Optical

Refers to a type of connector to which an optical

cable is connected. For consumer audio, a format

called IEC60958 (S/P DIF) is used. However, the MY8-

AT (separately sold) option that can be installed in the

YGDAI (*see entry) slot of the AW2816 provides an

optical connector that uses the ALESIS ADAT format,

and allows eight channels of digital audio to be input

or output when connected to a compatible device.

Overdubbing

A technique that can be used on multi-track recorders

such as the AW2816, in which (for example) drums

are recorded ﬁrst, and then other instruments such as

guitar and bass are recorded on other tracks while the

musician listens to the previously-recorded tracks, in

this way accumulating a larger number of tracks.

Pan

A term derived from "panorama," referring to a

parameter that speciﬁes the location of a sound within

the stereo ﬁeld. Normally if a sound that is originally

stereo is assigned to two monaural channels, the pan

controls of the two channels are set to far left and far

right so that the sound can be monitored in its original

spatial state.

Phantom power

Power that is supplied via the cable of a microphone,

and is normally required when using a condenser

mic. This is deﬁned as 48 volts.

Pop guard

A thin mesh card placed between the vocalist's mouth

and the mic to reduce "breath" noise or "pop" noise

when recording a vocal. Tissue paper is sometimes

used.

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