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 Is a Frequency range of 18-20 K for headphones good?

Answer "The program allows the user to change speech to text. You do not need headphones to use Dragon NaturallySpeaking. However, if you do not use headphones it will require you to use a microphone."
http://wiki.answers.com/Q/Is_a_Frequency_range_of_18-20_K_for_headphones_good

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What is the hearing frequency range of headphones?

They were receiving instructions and timings. Also, because sound travels much slower than light, each performer would have had the music directly in their earphones to ensure they all stayed in time.
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Resolution frequency is High, Frequency Out of Range in Windows 98. What to do?

Go to a vacant area of your Desktop > Right Click > Properties > Settings > Advanced > Monitor > Tick the box that says "Hide settings this Monitor can not display"Set the monitor to 60Hertz and wo... Read More »
http://answers.yahoo.com//question/index?qid=20070119192132AAn6s8Z

What is the safe frequency range for a 3-D ultrasound?

3-D ultrasound, a type of medical sonography, uses the same frequency as a normal 2-D ultrasound---usually no more than 10 MHz. Modern medicine considers sonograms performed within this frequency r... Read More »
http://www.answerbag.com/q_view/2094235

What is the frequency Infrared Stereo headphones?

The standard frequencies are: Dual-channel for two car audio sources Carrier frequency: A source: 2.8MHz (right) and 2.3MHz (left) B source: 3.8MHz (right) and 3.2MHz (left)
http://wiki.answers.com/Q/What_is_the_frequency_Infrared_Stereo_headphones


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