The background noise should consist of unintrusive non-characteristic noise.

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For conference calls and chats, Tiki's Intelligent Speech Mode uses voice isolation to bring your voice to the forefront while noise-canceling technology simultaneously reduces unwanted, competing background noise such as computer fans, keyboard typing and ambient sound.

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Customers can also stay in touch via video chat, while enjoying excellent voice quality with reduced background noise through the built-in digital microphone.

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In the London area there's a constant low-level clacking noise in the background, reminiscent of the typing pools of yore.

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The essential ingredients of good open-plan office acoustics are evenly distributed sound-absorptive materials and a minimum level of background noise throughout.

BBC: The pleasures and perils of the open-plan office

The model also included a microphone which can monitor background noise and determine whether to amplify certain sounds - such as speech - to improve the listening experience.

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Combined with the COOLPIX P7700's powerful CMOS sensor, this bright, large-aperture NIKKOR lens provides reduced noise, beautiful background blurring, fast performance and high image quality whether shooting stills or Full HD video.

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Voice Focus ensures precisely targeted voice pick-up, while Noise Reduction enables clear conversations without background noise interference.

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Ask dial-in attendees to put their telephones on mute while they are listening to avoid background noise.

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