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Microphonics. Microphonics, microphony, or microphonism [1] [2] [3] describes the phenomenon wherein certain components in electronic devices transform mechanical vibrations into an undesired electrical signal ( noise ). The term comes from analogy with a microphone, which is intentionally designed to convert vibrations to electrical signals.
Bone conduction. Bone conduction is the conduction of sound to the inner ear primarily through the bones of the skull, allowing the hearer to perceive audio content even if the ear canal is blocked. Bone conduction transmission occurs constantly as sound waves vibrate bone, specifically the bones in the skull, although it is hard for the ...
(Sound could, however, be stored on an M-DISC DVD-R using the DVD-Audio format.) Noise. For electronic audio signals, sources of noise include mechanical, electrical and thermal noise in the recording and playback cycle. The amount of noise that a piece of audio equipment adds to the original signal can be quantified.
When applied to specific electronic devices, such as loudspeakers, microphones, amplifiers or headphones sound quality usually refers to accuracy, with higher quality devices providing higher accuracy reproduction. When applied to processing steps such as mastering recordings, absolute accuracy may be secondary to artistic or aesthetic concerns.
Audio feedback (also known as acoustic feedback, simply as feedback) is a positive feedback situation that may occur when an acoustic path exists between an audio output (for example, a loudspeaker) and its audio input (for example, a microphone or guitar pickup ). In this example, a signal received by the microphone is amplified and passed out ...
Audio equipment testing. Audio equipment testing is the measurement of audio quality through objective and/or subjective means. The results of such tests are published in journals, magazines, whitepapers, websites, and in other media. Those who test and evaluate equipment can be roughly divided into two groups: "Objectivists", who believe that ...
Direct-field acoustic testing. Direct-field acoustic testing, or DFAT, is a technique used for acoustic testing of aerospace structures by subjecting them to sound waves created by an array of acoustic drivers. [1] The method uses electro-dynamic acoustic speakers, arranged around the test article to provide a uniform, well-controlled, direct ...