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  2. Sound amplification by stimulated emission of radiation

    en.wikipedia.org/wiki/Sound_amplification_by...

    A phonon laser device. Sound amplification by stimulated emission of radiation ( SASER) refers to a device that emits acoustic radiation. [1] It focuses sound waves in a way that they can serve as accurate and high-speed carriers of information in many kinds of applications—similar to uses of laser light. [citation needed] Acoustic radiation ...

  3. The Mosquito - Wikipedia

    en.wikipedia.org/wiki/The_Mosquito

    The Mosquito or Mosquito alarm is a machine used to deter loitering by emitting sound at high frequency. In some versions, it is intentionally tuned to be heard primarily by younger people. Nicknamed "Mosquito" for the buzzing sound it plays, the device is marketed as a safety and security tool for preventing youths from congregating in ...

  4. Long-range acoustic device - Wikipedia

    en.wikipedia.org/wiki/Long-range_acoustic_device

    A long-range acoustic device ( LRAD ), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance. It has been used as a method of crowd control, which has caused permanent hearing damage, having an extremely high decibel capacity (up to 160 dB measured at one ...

  5. Electrolarynx - Wikipedia

    en.wikipedia.org/wiki/Electrolarynx

    U+0418. An electrolarynx, sometimes referred to as a " throat back ", is a medical device about the size of a small electric razor used to produce clearer speech by those people who have lost their voice box, usually due to cancer of the larynx. The most common device is a handheld, battery-operated device pressed against the skin under the ...

  6. 15 unique pairs of wireless earbuds on sale for up to 73% off

    www.aol.com/15-unique-pairs-wireless-earbuds...

    Apple’s AirPods Pro and Powerbeats Pro earbuds check most of the boxes we care about when it comes to wireless listening — quality sound, sleek design, and decent battery life. The one they ...

  7. Acoustic mirror - Wikipedia

    en.wikipedia.org/wiki/Acoustic_mirror

    An acoustic mirror is a passive device used to reflect and focus (concentrate) sound waves. Parabolic acoustic mirrors are widely used in parabolic microphones to pick up sound from great distances, employed in surveillance and reporting of outdoor sporting events. Pairs of large parabolic acoustic mirrors which function as "whisper galleries ...

  8. Sound level meter - Wikipedia

    en.wikipedia.org/wiki/Sound_level_meter

    A sound level meter (also called sound pressure level meter ( SPL )) is used for acoustic measurements. It is commonly a hand-held instrument with a microphone. The best type of microphone for sound level meters is the condenser microphone, which combines precision with stability and reliability. [1] The diaphragm of the microphone responds to ...

  9. List of hardware and software that supports FLAC - Wikipedia

    en.wikipedia.org/wiki/List_of_hardware_and...

    Also LCG Jukebox from Lonely Cat Games is able to play FLAC audio on Symbian S60 and Windows Mobile devices. Android operating system devices are capable of playing FLAC since version 3.1 Others may also support it by replacing the device's firmware with the third-party CyanogenMod ROM, which can play back FLAC. Otherwise users could simply opt ...