acoustic feedback

acoustic feedback

[ə′küs·tik ′fēd‚bak]
(engineering acoustics)
The reverberation of sound waves from a loudspeaker to a preceding part of an audio system, such as to the microphone, in such a manner as to reinforce, and distort, the original input. Also known as acoustic regeneration.
References in periodicals archive ?
The MMI touch response operating system with haptic and acoustic feedback provides quick, intuitive operation, driver assistance systems include the parking pilot and garage pilot.
earmolds of individual manufacture: - should carry out sound from the earbud in the ear - in shape and size should fully comply with the anatomy of the ear - should be made from the impression of the ear canal - should be strong (should not be broken in the case of a solid material and should not crack in case of fabrication from a soft material) - should have a shape and necessary technological holes that provide the required acoustic effect on the parameters of the auditory - should be resistant to moisture and earwax - should be comfortable in operation - should improve speech intelligibility compared to standard ear pads - do not have acoustic feedback (the whistle of the hearing aid should be absent) must comply with the toxicological and hygienic requirements.
All units in the range have dual AC & DC power supply inputs, advanced echo cancellation and mic AGC to prevent acoustic feedback, 10 user assignable physical GPIO ports and multiple virtual (network) GPIO ports.
Self-sustained oscillations with acoustic feedback in flow over a backward-facing step with a small upstream step, "Physics of Fluids.
Miller, Resonance in Singing: Voice Building Through Acoustic Feedback (Princeton, NJ: Inside View, 2008), Chapter 1.
It also has visual and acoustic feedback for needle insertion and end of injection.
The system provides the driver with the accustomed acoustic feedback, even though the motor operates virtually without sound.
Esteem uses the patient's eardrum as a natural "microphone:' detecting sounds through the ear canal and thus reducing background noise, distortion, and acoustic feedback.
Also, their light weight does not bode well for resistance to acoustic feedback and specs for wow, flutter, and rumble (if you can find them) are lackluster.
VASCO's voice version is able to use a speaker or headset to read one-time passwords to the user, providing acoustic feedback whenever a key is pressed.
Every key press by the user will be followed by an acoustic feedback.
Animal-acoustics researcher Michael Greenfield of the University of Kansas in Lawrence says that if the tree-hole frogs indeed use acoustic feedback to adjust their calls, they are unusual.