[DOC] [TLE] Amplitude modulation - Wikipedia [PAR] Amplitude modulation (AM) is a modulation technique used in electronic 
communication, most commonly for transmitting information via a radio carrier 
wave. In amplitude modulation, the amplitude (signal strength) of the carrier wave 
... signal (a sinusoidal carrier wave) has its amplitude modulated by an audio 
waveform... [DOC] [TLE] Frequency modulation - Wikipedia [PAR] In telecommunications and signal processing, frequency modulation (FM) is the 
encoding of information in a carrier wave by varying the instantaneous frequency 
of the wave. This contrasts with amplitude modulation, in which the amplitude of 
the carrier wave varies, ... In radio transmission, an advantage of frequency 
modulation is that it has a... [DOC] [TLE] How does modulation work? | Tait Radio Academy [PAR] A carrier wave is a pure wave of constant frequency, a bit like a sine wave. ... the 
carrier's amplitude will change corresponding to the input signal that's been fed 
into it. ... An analog modulation scheme has an input wave that varies 
continuously like a sine wave. In digital modulation scheme, it's a little more 
complicated. [DOC] [TLE] Broadcast Signals - HyperPhysics [PAR] Radio communication is typically in the form of AM radio or FM Radio 
transmissions ... That subcarrier is then modulated with a (L-R) or difference 
signal so that the ... to modulate the amplitude of the carrier wave transmitted 
from the broadcast... [DOC] [TLE] Amplitude Modulation Fundamentals - PA2OLD [PAR] ... carrier frequency remains constant during the modulation process, but its 
amplitude varies in ... peaks of the carrier wave vary with the modulating signal. 
An ... larly important that the peak value of the modulating signal be less than the 
peak value .... fm and fLSB fc fm. fLSB. fUSB. Amplitude Modulation 
Fundamentals. 99. [DOC] [TLE] Frequency Modulation, Phase Modulation, and FM spectra [PAR] In an earlier section we saw how Amplitude Modulation (AM) can be used to 
convey information. We also mentioned that Frequency Modulation (FM) and 
Phase Modulation (PM) ... We can define the FM wave, produced when we 
modulate a carrier ... its 'unmodulated' (i.e. carrier) frequency, and its modulated 
frequency,... [DOC] [TLE] Modulation and Demodulation - Talking Electronics [PAR] Its purpose is to produce radio waves for transmission into space. ... and heat 
waves except that they have longer wavelengths. It may be ... sion, frequency 
modulation is used for sound signal and amplitude modulation for picture signal. 
Therefore, our ... In amplitude modulation, only the amplitude of the carrier wave. [DOC] [TLE] AM, FM Radio Waves and Sound - CyberCollege [PAR] May 28, 2013 ... AM stands for amplitude modulation, which will be explained later. ... below that 
AM radio waves are of a lower frequency than either FM radio or ... (Incidentally, 
technically, it's refracting, not reflecting, but the effect is ... Note on the left that 
when the carrier wave of FM radio is modulated with sound that the... [DOC] [TLE] MODULATION (AM/FM) - Scribd [PAR] It is found that antennas on the order of magnitude of 5 miles to 5000 miles are 
necessary for ... FULL CARRIER TIME DOMAIN Amplitude modulation is created 
by using ... EXAMPLE: A carrier wave with an RMS voltage of 2V and a frequency 
of 1.5MHz ... Its only function is to aid in demodulating the signal at the receiver. [DOC] [TLE] AM vs FM - Difference and Comparison | Diffen [PAR] In FM, a radio wave known as the "carrier" or "carrier wave" is modulated in 
frequency by the signal that is to be transmitted. The amplitude and phase remain 
the... [DOC] [TLE] 76.24 -- AM radio wave [PAR] An AM radio wave consists of a sinusoidal carrier wave, which is modulated ... 
audio signal, hence the name AM, which stands for amplitude modulation. ... so 
that its resonant frequency matches that of the signal's carrier frequency, ... The 
physical process of FM transmission is virtually identical to that of AM 
transmission. [DOC] [TLE] Modulation  Electronic Circuits and Diagram-Electronics Projects ...

Question: With AM, the amplitude of the carrier wave is modulated; with FM, it's this that's modulated
Answer: Frequency