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An acoustic coupler is prominently shown early in the 1983 film " WarGames ", when character David Lightman ( depicted by actor Matthew Broderick ) places a telephone handset into the cradle of a film prop acoustic modem to accentuate the act of using telephone lines for interconnection to the developing computer networks of the period, in this case, a military command computer.
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acoustic and coupler
This audio tone was then transmitted using an acoustic coupler ( a speaker, in this case ) attached to the microphone of a common telephone handset.
At the receiving end, a handset ’ s speaker was attached to an acoustic coupler ( a microphone ), and a demodulator converted the varying tone into a variable current that controlled the mechanical movement of a pen or pencil to reproduce the image on a blank sheet of paper on an identical drum rotating at the same rate.
* PocketMail ( email PDA with built-in acoustic coupler )
In telecommunications, the term acoustic coupler has the following meanings:
His acoustic coupler is known as the Weitbrecht Modem.
Many models of TDDs ( Telecommunications Device for the Deaf ) still have a built-in acoustic coupler, which allow more universal use with pay phones and for 911 calls by deaf people.
* 1964 Livermore Data Systems Model A acoustic coupler modem surfs the web
* Digitronics acoustic coupler patent, January 5, 1971
On 15 August 1978, the DoC ( whose technical side is now part of the Industry Canada ) held a press conference and formally announced the Telidon project to the public, demonstrating a large video display sending information to the minicomputer controlling it over an acoustic coupler modem.
The Bell System allowed interconnection to third-party equipment only through the added expense of protective acoustic coupler, while Bell equipment could be directly electrically connected to the network, until a later FCC order which led to standardized modular connectors.
His design, the " Key-Cassette ", would be similar in design and concept to the earlier Key-Edit, but offer complete editing capability and support for two cassette decks or one cassette and an acoustic coupler modem to upload programs to other machines.
The acoustic coupler on the top is for use with telephone handsets.
In 1964, Marsters, Weitbrecht and Andrew Saks, an electrical engineer and grandson of the founder of the Saks Fifth Avenue department store chain, founded APCOM ( Applied Communications Corp .), located in the San Francisco Bay area, to develop the acoustic coupler, or modem ; their first product was named the PhoneType.
The entire configuration of teleprinter machine, acoustic coupler, and telephone set became known as the TTY.
Weitbrecht invented the acoustic coupler modem in 1964.
An IMSAI 8080 and an acoustic coupler type modem were among the hacking tools used by the main character in the 1983 movie WarGames.
However, even by 1983 the acoustic coupler was out of date.
The decision is often referred-to as " any lawful device ", allowing later innovations like answering machines, fax machines, and modems ( which initially used the same type of manual acoustic coupler as the Carterfone ) to proliferate.
At the time, modems generally came in two " flavors ", one for the end-user that required the user to dial the phone manually and use an acoustic coupler for connection, and another dedicated to answering incoming calls that was intended for use on the minicomputer or mainframe the user was calling.
* An electronic device, more properly, an acoustic coupler ;
The modem is powered from the portfolio and came with an acoustic coupler consisting of two round shells that could be mounted over both ends of a handset with the aid of velcro strips.
# redirect acoustic coupler
Eventually, Edgar accepts Madeline and Miles ' love for each other, and appears to commit suicide by sending a large electric current through its acoustic coupler, around the world, and back to itself.
acoustic and is
The word " acoustic " is derived from the Greek word ακουστικός ( akoustikos ), meaning " of or for hearing, ready to hear " and that from ἀκουστός ( akoustos ), " heard, audible ", which in turn derives from the verb ἀκούω ( akouo ), " I hear ".
Physicists and acoustic engineers tend to discuss sound pressure levels in terms of frequencies, partly because this is how our ears interpret sound.
The Spectrogram produced by such an instrument is a graphical display of the time varying pressure level and frequency profiles which give a specific acoustic signal its defining character.
where is the acoustic pressure and is the acoustic fluid velocity vector, is the vector of spatial coordinates, is the time, is the static mass density of the medium and is the bulk modulus of the medium.
The acoustic wave equation is a combination of these two sets of balance equations and can be expressed as
In that case the acoustic wave equation is written as
An important simplifying assumption for acoustic waves is that the amplitude of the disturbance of the field quantities is small.
To do that we assume that the medium is an ideal gas and all acoustic waves compress the medium in an adiabatic and reversible manner.
The value of is 1. 4 if the acoustic medium is air.
Then the solution of the acoustic wave equation is
The steel-string acoustic guitar is a modern form of guitar that descends from the classical guitar, but is strung with steel strings for a brighter, louder sound.
acoustic and prominently
Once again, the theme was rescored, this time using a prominently heard Moog synthesizer leading the acoustic instruments, and the rhythm cut to half-time.
Their 1992 self-titled initial release mixed acoustic and electric rock and Animal Bag was prominently featured in the pilot episode of My So-Called Life as the party band.
For instance, while the acoustic guitar features prominently in previous releases, on Red it is heard only for a few bars in " Fallen Angel ".
The music of The Blue Nile is built heavily on synthesizers and electronic instrumentation and percussion, although later works featured acoustic guitar more prominently.
acoustic and shown
If the operator is using acoustic ranges to position items in unknown locations they will need to use more than the single range example shown above.
A well-known acoustic version of " Stand by Me " was shown on television the night before the release of Be Here Now as part of a BBC One documentary, featuring Noel, Liam Gallagher and drummer Alan White sitting by the side of a swimming pool, with Liam on vocals, Noel on acoustic guitar and White holding a tambourine.
Studies have shown that no direct coupling of the acoustic field with chemical species on a molecular level can account for sonochemistry or sonoluminescence.
The company's research and development department has produced specialized fabrics and materials, electromagnetic gyroscopic navigational satellite systems ( as shown on Batman: Gotham Knight ), antihemorrhagic agent, radiation stamping technology, and rotor blades made of metal composites that have low radar signature and special acoustic design.
Starr is shown playing acoustic guitar and Lennon mimes playing drums.
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