Modulation is defined as the process by which some characteristics like amplitude, frequency, and phase of a carrier signal are varied in accordance with... 24 KB (3,038 words) - 03:42, 25 April 2024 |
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... 28 KB (3,614 words) - 14:48, 30 March 2024 |
The modulation index (or modulation depth) of a modulation scheme describes by how much the modulated variable of the carrier signal varies around its... 449 bytes (81 words) - 18:00, 4 August 2020 |
FM broadcasting (redirect from Frequency Modulation Radio) FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast carrier wave. Invented in 1933 by American... 64 KB (7,677 words) - 19:14, 16 April 2024 |
Space modulation is a radio amplitude modulation technique used in instrument landing systems (ILS) that incorporates the use of multiple antennas fed... 2 KB (270 words) - 16:34, 2 October 2019 |
In music, modulation is the change from one tonality (tonic, or tonal center) to another. This may or may not be accompanied by a change in key signature... 28 KB (3,277 words) - 07:45, 9 April 2024 |
Quadrature amplitude modulation (QAM) is the name of a family of digital modulation methods and a related family of analog modulation methods widely used... 15 KB (1,941 words) - 15:43, 27 March 2024 |
carrier wave. Phase modulation is one of the two principal forms of angle modulation, together with frequency modulation. In phase modulation, the instantaneous... 6 KB (674 words) - 05:26, 17 April 2024 |
Pulse-code modulation (PCM) is a method used to digitally represent analog signals. It is the standard form of digital audio in computers, compact discs... 33 KB (3,992 words) - 08:09, 13 April 2024 |
Look up modulation, modulate, or modulator in Wiktionary, the free dictionary. Modulation is the process of varying one or more properties of a high-frequency... 2 KB (225 words) - 06:48, 7 April 2024 |
Pulse-amplitude modulation (PAM) is a form of signal modulation where the message information is encoded in the amplitude of a series of signal pulses... 10 KB (1,094 words) - 17:12, 23 April 2024 |
In music, metric modulation is a change in pulse rate (tempo) and/or pulse grouping (subdivision) which is derived from a note value or grouping heard... 10 KB (1,157 words) - 06:08, 29 February 2024 |
modulation order of a digital communication scheme is determined by the number of the different symbols that can be transmitted using it. Modulation order... 1 KB (150 words) - 08:49, 5 July 2023 |
AM broadcasting (redirect from Amplitude modulation broadcasting) AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions... 74 KB (9,169 words) - 15:20, 18 April 2024 |
Line code (redirect from Baseband modulation) frequency modulation, Miller encoding and delay encoding Non-return-to-zero (NRZ) Non-return-to-zero, inverted (NRZI) Pulse-position modulation (PPM) Return-to-zero... 16 KB (1,665 words) - 05:56, 1 March 2024 |
Phase-shift keying (redirect from Biphase modulation) is a digital modulation process which conveys data by changing (modulating) the phase of a constant frequency carrier wave. The modulation is accomplished... 42 KB (6,219 words) - 03:19, 17 April 2024 |
Angle modulation is a class of carrier modulation that is used in telecommunications transmission systems. The class comprises frequency modulation (FM)... 5 KB (677 words) - 22:21, 29 March 2023 |
A modulation transformer is an audio-frequency transformer that forms a major part of most AM transmitters. The primary winding of a modulation transformer... 998 bytes (140 words) - 18:06, 30 August 2022 |
The difference in the depth of modulation (DDM) is used by instrument landing systems in conjunction with the associated airborne receiving equipment to... 2 KB (285 words) - 21:25, 29 November 2023 |
Differential pulse-code modulation (DPCM) is a signal encoder that uses the baseline of pulse-code modulation (PCM) but adds some functionalities based... 3 KB (357 words) - 14:21, 24 March 2024 |
Optical transfer function (redirect from Modulation Transfer Function) simply the next item in the optical transmission chain. A variant, the modulation transfer function (MTF), neglects phase effects, but is equivalent to... 42 KB (5,592 words) - 14:41, 16 December 2023 |
In the fields of nonlinear optics and fluid dynamics, modulational instability or sideband instability is a phenomenon whereby deviations from a periodic... 13 KB (1,738 words) - 13:40, 1 February 2024 |
Pulse-density modulation, or PDM, is a form of modulation used to represent an analog signal with a binary signal. In a PDM signal, specific amplitude... 10 KB (1,447 words) - 23:22, 14 February 2024 |