AM, or amplitude modulation, was the earliest way of sending voice over radio waves. That makes sense because it is easy to modulate a signal and easy to demodulate it, as well.

Radio Control /Remote Control and ASK (Amplitude Shift Keying) /OOK (On /Off Keying) have been around for some time, but there is limited coherent information on the subject and the associated ...

A novel full-wave rectifier turns an audio power amplifier into a simple modulator, that is then used to modulate an ...

See modulation and carrier. Vary the Amplitude In AM modulation, the voltage (amplitude) of the carrier is varied by the incoming signal. In this example, the modulating wave implies an analog signal.

They’re what we call on-off keying (OOK) or amplitude-shift keying (ASK) today. Even though AM is the first and oldest, it’s still around in more forms than you might think.

Modern Modulation Techniques Jul 1, 2014 9:00 AM, Jeremy Ruck, PE Modern society is definitely more mobile than it was several decades ago. Accompanying the increased mobility is a corresponding ...

Anyway, along comes a new company MagnaCom with a new modulation method called WAve Modulation (WAM). You won’t find it any textbook and the company won’t reveal any details on how it works.

Complex modulation of optical fields (i.e., the control of light’s amplitude and phase) is vital to the application of lasers in diverse fields, such as optical communication, three-dimensional ...

David Clark, Amplitude Modulation Method for Measuring Linear Excursion of Loudspeakers, SAE Transactions, Vol. 100, Section 6: JOURNAL OF PASSENGER CARS (1991), pp. 863-871 ...