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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9

Open Air
When referring to headphones, the term open air means that the headphone remains open to the outside. Open air headphones are usually more comfortable than their closed air counterparts, but they do allow sound to leak in both directions. This means that sounds from the outside can get it, potentially making it difficult to hear the headphone signal, which is of particular concern with drummers or anyone who is monitoring near loud sound sources. They also allow sound to escape to the outside, which can become an issue in recording sessions. For example, a singer's headphone mix may leak into the vocal mic enough that it can be audible in the final recording, or at least to the extent that it effects the tonality of the final mix. For these and other reasons, closed air headphones are often used in recording situations; however, open air headphones are often preferred for general listening and/or audiophile listening applications.

Obeche

Oberheim OB-X

Oblique Room Mode

Occlusion

Octave

Octo Bass

Odd-order Harmonic Distortion

OEM

OFC

OFC

Off-Axis

Off Line

Offset

Ogg Vorbis (.ogg)

Ohm

Ohm's Law

Okoume

OLED

OMF (OMFI)

Omnidirectional

Omni Mode

OMS

On-Axis

Onboard

One-off

One-shot Sample

Online

Op Amp

Opcode

Open

 Open-back Cabinet

Open-voice Triad

Open Air

Open Back

Open Chord

Open C Tuning

Open Mic

Open Source

Open String

Open TL

Open Tuning

Open Voicing (or Spread Voicing)

Opera Buffa

Operating System

Operator

Optical

Optical Compressor

Optical Media

Opto-isolator

Orange Book

Oratorio

Orbiter

Orchestra

Orchestrion

Orchestrions

Organ

ORTF

Orville Gibson

OS

OSC

 Oscillator

Oscillator Sync

Oscilloscope

Ossicles

Ostinato

OS X

OTB

OTP

Out

Out

Out of Phase

Out Of The Box

Output

Output Jack

Ovangkol

Overdrive

Overdub

Over Easy

Overheads

Overload

Over(s)

Oversampling

Overshoot / Undershoot

Overtone

Overture

Overview

OXFW911

Oxide

Oxygen-free Copper

     
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