Information signal
What Information signal means in Physics A-Level, as defined for AQA.
Definitions of Information signal
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Reference: AQA
The slower envelope, or the repeating pattern of frequency change in FM, representing the information signal.
The lower-frequency oscillation representing the message, such as audio from a microphone.
Topics that use Information signal
Related terms
- Amplitude modulation
- Amplitude modulation (AM)
- Bandwidth
- Carrier wave
- Frequency and period relationship
- Frequency modulation
- Waveform interpretation and graphical representation
- Carrier waves and information transfer
Using Information signal in the exam
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