0_Wizard
Headphones are important sometimes.  They allow me to listen to an audio source without anyone nearby hearing.
Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby to hear.
chosen_Headphones_0
Headphones
chosen_topic_0_Headphones
Headphones
Headphones (or head-phones in the early days of telephony and radio) are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby to hear. Headphones are also known as earspeakers, earphones or, colloquially, cans. Circumaural and supra-aural headphones use a band over the top of the head to hold the speakers in place. The other type, known as earbuds or earpieces consist of individual units that plug into the user's ear canal.
Hearing aid
A hearing aid is a device designed to improve hearing by making sound audible to a person with hearing loss. Hearing aids are classified as medical devices in most countries, and regulated by the respective regulations. Small audio amplifiers such as PSAPs or other plain sound reinforcing systems cannot be sold as "hearing aids". Early devices, such as ear trumpets or ear horns, were passive amplification cones designed to gather sound energy and direct it into the ear canal. Modern devices are computerised electroacoustic systems that transform environmental sound to make it audible, according to audiometrical and cognitive rules.
Headphone amplifier
A headphone amplifier is a low-powered audio amplifier designed particularly to drive headphones worn on or in the ears, instead of loudspeakers in speaker enclosures. Most commonly, headphone amplifiers are found embedded in electronic devices that have a headphone jack, such as integrated amplifiers, portable music players (e.g., iPods), and televisions. However, standalone units are used, especially in audiophile markets and in professional audio applications, such as music studios. Headphone amplifiers are available in consumer-grade models used by hi-fi enthusiasts and audiophiles and professional audio models, which are used in recording studios.
Bose headphones
Bose Corporation produces headphones for consumer, aviation and military use. The models range includes in-ear headphones, mobile headsets, supra-aural headphones, Circumaural headphones and military/aviation headsets. The company was the first to release active noise cancelling headphones as a consumer product. Bose's consumer range of active noise-cancelling headphones are called "QuietComfort". For industrial noise-cancelling applications, Bose produces the A20 Aviation Headset, Space Shuttle Headset and Combat Vehicle Crewman Headset. According to Bose, the company started noise-cancellation involvement after Dr. Amar Bose went on a 1978 flight to Europe, and "was trying out new set of airline-supplied headphones and found that he couldn't really enjoy the sound with the roar of engines in the background".
Binaural recording
Binaural recording is a method of recording sound that uses two microphones, arranged with the intent to create a 3-D stereo sound sensation for the listener of actually being in the room with the performers or instruments. This effect is often created using a technique known as "dummy head recording", wherein a mannequin head is outfitted with a microphone in each ear. Binaural recording is intended for replay using headphones and will not translate properly over stereo speakers. This idea of a three dimensional or "internal" form of sound has also translated into useful advancement of technology in many things such as stethoscopes creating "in-head" acoustics and IMAX movies being able to create a three dimensional acoustic experience.
Disc jockey
A disc jockey (DJ) is a person who plays existing recorded music for a live audience. Most common types of DJs include radio DJ, club DJ who performs at a nightclub or Music festival and turntablist who uses record players, usually turntable, to manipulate sounds on the phonograph record. Originally, the "disc" in "disc jockey" referred to gramophone records, but now "DJ" is used as an all-encompassing term to describe someone who mixes recorded music from any source, including vinyl records, cassettes, CDs, or digital audio files stored on USB stick or laptop. DJs typically perform for a live audience in a nightclub or dance club or a TV, radio broadcast audience, or in the 2010s, an online radio audience.
Whole House Audio
Whole House Audio (distributed audio) systems are audio systems that allow for playback and often control of music throughout an entire home or building. Numerous commercial systems provide this function, or a system can be custom built or homemade. Whole house audio systems can be classified as: single source-single zone, single source-multiple zone or multiple source-multiple zone. These systems distribute the same audio source everywhere—individual rooms must listen to the same audio source. This is the simplest type of system that can be installed. If designed properly, no special equipment is required other than one amplifier and a desired audio source.
1_Apprentice
Yes, I agree. They are especially useful when travelling on a bus or airplane.
0_Wizard
They convert electrical signal to a corresponding sound.
They are electroacoustic transducers, which convert an electrical signal to a corresponding sound.
self_Headphones_1
Headphones
self_0_Headphones
Headphones
Headphones (or head-phones in the early days of telephony and radio) are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby to hear. Headphones are also known as earspeakers, earphones or, colloquially, cans. Circumaural and supra-aural headphones use a band over the top of the head to hold the speakers in place. The other type, known as earbuds or earpieces consist of individual units that plug into the user's ear canal.
Loudspeaker
A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; which converts an electrical audio signal into a corresponding sound. The most widely used type of speaker in the 2010s is the dynamic speaker, invented in 1925 by Edward W. Kellogg and Chester W. Rice. The dynamic speaker operates on the same basic principle as a dynamic microphone, but in reverse, to produce sound from an electrical signal. When an alternating current electrical audio signal is applied to its voice coil, a coil of wire suspended in a circular gap between the poles of a permanent magnet, the coil is forced to move rapidly back and forth due to Faraday's law of induction, which causes a diaphragm (usually conically shaped) attached to the coil to move back and forth, pushing on the air to create sound waves.
Microphone
A microphone, colloquially nicknamed mic or mike (), is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and public events, motion picture production, live and recorded audio engineering, sound recording, two-way radios, megaphones, radio and television broadcasting, and in computers for recording voice, speech recognition, VoIP, and for non-acoustic purposes such as ultrasonic sensors or knock sensors. Several different types of microphone are in use, which employ different methods to convert the air pressure variations of a sound wave to an electrical signal.
History of sound recording
Experiments in capturing sound on a recording medium for preservation and reproduction began in earnest during the Industrial Revolution of the 1800s. Many pioneering attempts to record and reproduce sound were made during the latter half of the 19th century – notably Scott's Phonautograph of 1857 – and these efforts culminated in the invention of the phonograph by Thomas Edison in 1877. Digital recording emerged in the late 20th century, and has since flourished with the popularity of digital music and online streaming services. The history of sound recording - which has progressed in waves, driven by the invention and commercial introduction of new technologies — can be roughly divided into four main periods:  The earliest practical recording technologies were entirely mechanical devices.
Mechanical filter
A mechanical filter is a signal processing filter usually used in place of an electronic filter at radio frequencies. Its purpose is the same as that of a normal electronic filter: to pass a range of signal frequencies, but to block others. The filter acts on mechanical vibrations which are the analogue of the electrical signal. At the input and output of the filter, transducers convert the electrical signal into, and then back from, these mechanical vibrations. The components of a mechanical filter are all directly analogous to the various elements found in electrical circuits. The mechanical elements obey mathematical functions which are identical to their corresponding electrical elements.
Sound recording and reproduction
Sound recording and reproduction is an electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording. Prior to the development of sound recording, there were mechanical systems for encoding and reproducing instrumental music, such as wind-up music boxes and, later, player pianos. Acoustic analog recording is achieved by a microphone diaphragm that can detect and sense the changes in atmospheric pressure caused by acoustic sound waves and record them as a mechanical representation of the sound waves on a medium such as a phonograph record (in which a stylus cuts grooves on a record).
Effects unit
An effects unit or pedal is an electronic or digital device that alters how a musical instrument or other audio source sounds. In the 2010s, most effects use solid-state electronics and/or computer chips. Some vintage effects units from the 1930s to the 1970s and modern reissues of these effects use mechanical components as well (e.g., Leslie rotating speaker, spring reverb, and tape recorder-based echo effects) or vacuum tubes. Some effects subtly "color" a sound, such as a reverb unit used on a low setting, while others transform it dramatically, such as a distortion pedal used with electric guitar, with the overdrive set to its maximum level.
1_Apprentice
Have you ever tried the version that vibrates your eardrum to create sound? I tried Google Glass and that is how it worked.
0_Wizard
No, I haven't.  That's interesting I didn't know that's how google glass worked.  It's an interesting hands free format.
Google Glass displayed information in a smartphone-like hands-free format.
partner_Google_Glass_2
Google Glass
partner_0_Google_Glass
Google Glass
Google Glass is an optical head-mounted display designed in the shape of a pair of eyeglasses. It was developed by X (previously Google X) with the mission of producing a ubiquitous computer. Google Glass displayed information in a smartphone-like hands-free format. Wearers communicated with the Internet via natural language voice commands. Google started selling a prototype of Google Glass to qualified "Glass Explorers" in the US on April 15, 2013, for a limited period for $1,500, before it became available to the public on May 15, 2014. It also had a camera attached to it. The headset originally received a great deal of criticism and legislative action due to privacy and safety concerns.
Smartglasses
Smartglasses or smart glasses are wearable computer glasses that add information alongside or to what the wearer sees. Alternatively smartglasses are sometimes defined as wearable computer glasses that are able to change their optical properties at runtime. Smart sunglasses which are programmed to change tint by electronic means are an example of the latter type of smartglasses . Superimposing information onto a field of view is achieved through an optical head-mounted display (OHMD) or embedded wireless glasses with transparent heads-up display (HUD) or augmented reality (AR) overlay that has the capability of reflecting projected digital images as well as allowing the user to see through it, or see better with it.
Optical head-mounted display
An optical head-mounted display (OHMD) is a wearable device that has the capability of reflecting projected images as well as allowing the user to see through it that is augmented reality. Various techniques have existed for see-through HMDs. Most of these techniques can be summarized into two main families: "Curved Mirror" (or Curved Combiner) based and "Waveguide" or "Light-guide" based. The curved mirror technique has been used by Vuzix in their Star 1200 product, by Olympus, and by Laster Technologies. Various waveguide techniques have existed for some time. These techniques include diffraction optics, holographic optics, polarized optics, and reflective optics:  Head-mounted displays are not designed to be workstations, and traditional input devices such as keyboards do not support the concept of smart glasses.
Wearable computer
Wearable computers, also known as body-borne computers or wearables, are miniature electronic devices that are worn under, with, or on top of clothing. This class of wearable technology has been developed for general or special purpose information technologies. It is also used in media development. Wearable computers are especially useful for applications that require more complex computational support, such as accelerometers or gyroscopes, than just hardware coded logic strained by the physical hardware of the system. Merchandiser often use the broadest definition, as any computing device worn on the body.
Project 2x1
Project 2x1 is a 2013 American documentary film about the Hasidic and West Indian residents of Crown Heights, Brooklyn. It is shot in part using Google Glass. Project 2x1 is directed by Hannah Roodman, and produced by Lisa Campbell and Jaqueline Ratner Stauber. The film is produced by a diverse group of Crown Heights residents; the "Project 2×1" film project was initially founded by Mendy Seldowitz, Hannah Roodman, Celso White and Ben Millstein. Project 2x1 is styled as a documentary film covering the daily lives of the Chabad Hasidic and West Indian residents of Crown Heights, Brooklyn. Both cultural as well as religious events are captured in the film.
CrowdOptic
CrowdOptic, Inc. (known as CrowdOptic) is a privately held San Francisco-based technology company founded in 2011. CrowdOptic, led by CEO Jon Fisher, is best known for its augmented reality technology and triangulation algorithms used in sports, medicine and government that gathers and analyzes data from smart devices based on where they are pointed to identify areas of interest. As of 2016, CrowdOptic remains the only patented solution for wearables like Google Glass and Sony SmartEyeGlass. CrowdOptic was founded in 2011 by Jon Fisher, Jeff Broderick, Doug Van Blaricom and Alex Malinovsky. The company analyzes data from mobile devices to identify hot spot activity and connects Google Glass footage to live video feeds.
Google Glass breastfeeding app trial
The Breastfeeding with Google Glass app trial began in Australia on 1 March 2014, using a wearable technology computing device, Google Glass, to provide live video counselling and an informational portal to support women with breastfeeding. The Google Glass breastfeeding trial program was developed in collaboration with the Australian Breastfeeding Association and Melbourne technology company, Small World Social. It was the world's first hands-free program on breastfeeding basics and tutorials using a wearable computing device. The trial lasted 7 weeks, commencing on 1 March and ending on 13 April 2014.
1_Apprentice
Yes, I don't know if they still use that method but it was new to me when I tried the first version of Google Glass. I also like the noise canceling headphones.
0_Wizard
Is Google Glass still available?  I thought they were discontinued.  They have a camera attached which is very interesting.
It also had a camera attached to it.
partner_Google_Glass_5
Google Glass
partner_1_Google_Glass
Google Glass
Google Glass is an optical head-mounted display designed in the shape of a pair of eyeglasses. It was developed by X (previously Google X) with the mission of producing a ubiquitous computer. Google Glass displayed information in a smartphone-like hands-free format. Wearers communicated with the Internet via natural language voice commands. Google started selling a prototype of Google Glass to qualified "Glass Explorers" in the US on April 15, 2013, for a limited period for $1,500, before it became available to the public on May 15, 2014. It also had a camera attached to it. The headset originally received a great deal of criticism and legislative action due to privacy and safety concerns.
Smartglasses
Smartglasses or smart glasses are wearable computer glasses that add information alongside or to what the wearer sees. Alternatively smartglasses are sometimes defined as wearable computer glasses that are able to change their optical properties at runtime. Smart sunglasses which are programmed to change tint by electronic means are an example of the latter type of smartglasses . Superimposing information onto a field of view is achieved through an optical head-mounted display (OHMD) or embedded wireless glasses with transparent heads-up display (HUD) or augmented reality (AR) overlay that has the capability of reflecting projected digital images as well as allowing the user to see through it, or see better with it.
Optical head-mounted display
An optical head-mounted display (OHMD) is a wearable device that has the capability of reflecting projected images as well as allowing the user to see through it that is augmented reality. Various techniques have existed for see-through HMDs. Most of these techniques can be summarized into two main families: "Curved Mirror" (or Curved Combiner) based and "Waveguide" or "Light-guide" based. The curved mirror technique has been used by Vuzix in their Star 1200 product, by Olympus, and by Laster Technologies. Various waveguide techniques have existed for some time. These techniques include diffraction optics, holographic optics, polarized optics, and reflective optics:  Head-mounted displays are not designed to be workstations, and traditional input devices such as keyboards do not support the concept of smart glasses.
Project 2x1
Project 2x1 is a 2013 American documentary film about the Hasidic and West Indian residents of Crown Heights, Brooklyn. It is shot in part using Google Glass. Project 2x1 is directed by Hannah Roodman, and produced by Lisa Campbell and Jaqueline Ratner Stauber. The film is produced by a diverse group of Crown Heights residents; the "Project 2×1" film project was initially founded by Mendy Seldowitz, Hannah Roodman, Celso White and Ben Millstein. Project 2x1 is styled as a documentary film covering the daily lives of the Chabad Hasidic and West Indian residents of Crown Heights, Brooklyn. Both cultural as well as religious events are captured in the film.
CrowdOptic
CrowdOptic, Inc. (known as CrowdOptic) is a privately held San Francisco-based technology company founded in 2011. CrowdOptic, led by CEO Jon Fisher, is best known for its augmented reality technology and triangulation algorithms used in sports, medicine and government that gathers and analyzes data from smart devices based on where they are pointed to identify areas of interest. As of 2016, CrowdOptic remains the only patented solution for wearables like Google Glass and Sony SmartEyeGlass. CrowdOptic was founded in 2011 by Jon Fisher, Jeff Broderick, Doug Van Blaricom and Alex Malinovsky. The company analyzes data from mobile devices to identify hot spot activity and connects Google Glass footage to live video feeds.
Wearable computer
Wearable computers, also known as body-borne computers or wearables, are miniature electronic devices that are worn under, with, or on top of clothing. This class of wearable technology has been developed for general or special purpose information technologies. It is also used in media development. Wearable computers are especially useful for applications that require more complex computational support, such as accelerometers or gyroscopes, than just hardware coded logic strained by the physical hardware of the system. Merchandiser often use the broadest definition, as any computing device worn on the body.
Wearable technology
Wearable technology, wearables, fashionable technology, wearable devices, tech togs, or fashion electronics are smart electronic devices (electronic device with micro-controllers) that can be worn on the body as implants or accessories. Wearable devices such as activity trackers are a good example of the Internet of Things, since "things" such as electronics, software, sensors, and connectivity are effectors that enable objects to exchange data (including data quality ) through the internet with a manufacturer, operator, and/or other connected devices, without requiring human intervention. Wearable technology has a variety of applications which grows as the field itself expands.
1_Apprentice
The last I heard is they are continuing to develop the technology. I think they are being used mostly for businesses that need the functionality of a face camera.