Howtosignalprocessing
- How do you calculate modulated signals?
- How do you find the amplitude of a modulating signal?
- What is FM modulation of audio signal?
- What are the methods of measuring modulation index of AM?
How do you calculate modulated signals?
The equation for the overall modulated signal is obtained by multiplying the carrier and the modulating signal together. The constant A is required as it represents the amplitude of the waveform. Note also that the sidebands are separated from the carrier by a frequency equal to that of the tone.
How do you find the amplitude of a modulating signal?
Let Amax and Amin be the maximum and minimum amplitudes of the modulated wave. We will get the maximum amplitude of the modulated wave, when cos(2πfmt) is 1. We will get the minimum amplitude of the modulated wave, when cos(2πfmt) is -1.
What is FM modulation of audio signal?
Frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. The technology is used in telecommunications, radio broadcasting, signal processing, and computing.
What are the methods of measuring modulation index of AM?
In AM schemes, the modulation index refers to the amplitude ratio of the modulating signal to the carrier signal. With the help of Fast-Fourier-Transforms (FFT), the modulation index can be obtained by measuring the sideband amplitude and the carrier amplitude.
