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Microphone Siren
Easier conferencing with Polycom VSX 7000
This kit is just the right thing for medium to large rooms, even more so when they are located at quite a substantial distance from each other. The Polycom VSX 7000 is an amazing kit which lets you have your conference with increased clarity and effective communication. It can let you have a meeting with up to 40 people in a room. Therefore, whether it is a staff meeting you wish to hold or a strategic one with your clients, you can be sure that Polycom VSX 7000 will support you with its superior quality of both audio and video.
The PTZ camera employed by this kit has a great industrial reputation and is known to be the best of its kind. It is a high definition camera, with a great resolution producing a very clear video. This is aided by the Polycom Siren which lets you have a clear unimpeded audio conversation. The sound is further enhanced by the StereoSurround audio technology. The dialing and microphone functionality is improved with the SoundStation VTX 1000.
Such amazing technological aids give a very natural feel to your conference and remove the odd aspect of conversing through a video tool. Both the enhanced sound and picture quality add more meaning to your conferences by making it easier for people to follow each other. Also, these facilities are not hard to use. With the instruction manual and a few first times, you will be a pro at understanding how things roll. Moreover, your conferencing experience will be totally worry free and easy with the absence of all those entangling wires due to the embedded facilities. This also means that you can easily transport your kit from one place to another.
This kit also has numerous options which let you share content such as files, pictures, movies, audio clips and lots more. Not only this, you can even connect with the conferencing kits of others. This means that during a conference you can share material with great ease.
This conferencing kit can also be placed on your TV due to its space effective size. Since it uses the latest technology and has a lot of features, it is easily connectable to any video device or computer screen.
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Physics Question involving Helicopter and Paratrooper?
A helicopter drops a paratrooper carrying a siren that emits a 716 Hz audible signal.
The microphone (reciever) on the plane monitors the signal from the transmitter as the paratrooper falls.
If the perceived frequency becomes con stant at 420 Hz, what is the terminal speed of the paratrooper? Assume the paratrooper always remains below the helicopter and the velocity of sound in air is 343 m/s
Answer in units of m/s.
Thanks in advance
Also assuming the helicopter maintains constant altitude.
v(emitter) = c*(f(emitted)/f(received)-1) = 343*(716/420-1) = 241.7333 m/s. This is way too fast for a parachutist or even a falling body without a chute. Are you sure the 716 and 420 are correct?
Sunlite Super Siren Bicycle Alarm, 3 Sound With Microphone