The test and calibration of audio-frequency circuits and systems often require a sine wave with an accurate amplitude and frequency and a low total harmonic distortion (THD). Some test applications ...
Modulation is the process of varying a higher frequency carrier wave to transmit information. Though it is theoretically possible to transmit baseband signals (or information) without modulating it, ...
When you tune in to the radio, the announcer says, “Welcome to 100.1 FM Gold” or “You are listening to Akashvani at 783 AM”. The terms ‘AM’ and ‘FM’ refer to forms of signal modulation — a method at ...
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