The cones provide the same information as the beeping signal but in tactile form.

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Pulse-code modulation is simply a way of representing the analog electrical signal, in digital form.

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It needs to be sending radio signals or laser pulses, or some other form of signal that we can detect.

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ILA, in which the signal is converted to analogue form, is smoother and better because it makes no assumptions about the number of pixels in the original digital signal.

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Moreover, they also point out that there should be a second signal from annihilating dark matter, in the form of gamma rays coming from the Milky Way's halo.

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The introduction of a radical and game-like form of navigation would be a clear signal that Apple is still in the leadership role when it comes to interface design.

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The signal from Giuliani was that he had found his old form.

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Then, on July 27, North Korea's official news agency KCNA broadcast a statement by the foreign ministry saying there was a "specific and reserved form of dialogue" available between the United States and North Korea, a signal North Korea-watchers say indicated the government was getting ready to sit down.

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Long before my translator - who is switching form Greek to Arabic to French - gets it right, Mr Lamhoud's hand movements signal what happened.

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But will the captain's form this time be affected by the threat of a second successive Ashes defeat, one which would surely signal the end of his reign, and quite possibly his international career?

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