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2. Matched filter - Wikipedia

   en.wikipedia.org/wiki/Matched_filter

   The following section derives the matched filter for a discrete-time system. The derivation for a continuous-time system is similar, with summations replaced with integrals. The matched filter is the linear filter, h {\displaystyle h} , that maximizes the output signal-to-noise ratio .

3. Impedance matching - Wikipedia

   en.wikipedia.org/wiki/Impedance_matching

   Source and load impedance circuit. In electrical engineering, impedance matching is the practice of designing or adjusting the input impedance or output impedance of an electrical device for a desired value. Often, the desired value is selected to maximize power transfer or minimize signal reflection.

4. Two-tone testing - Wikipedia

   en.wikipedia.org/wiki/Two-tone_testing

   Circuit components such as amplifiers can be tested using the two-tone method with a test setup like that shown in the figure. Two signal generators, set to two different frequencies F1 and F2, are fed into a power combiner through circulators. The combiner needs to have good isolation to prevent the signal from one generator being sent to the ...

5. Digital signal processing - Wikipedia

   en.wikipedia.org/wiki/Digital_signal_processing

   Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations. The digital signals processed in this manner are a sequence of numbers that represent samples of a continuous variable in a domain such as time, space ...

6. Filter (signal processing) - Wikipedia

   en.wikipedia.org/wiki/Filter_(signal_processing)

   These circuits are generally designed to remove certain frequencies and allow others to pass. Circuits that perform this function are generally linear in their response, or at least approximately so. Any nonlinearity would potentially result in the output signal containing frequency components not present in the input signal.

7. Tube sound - Wikipedia

   en.wikipedia.org/wiki/Tube_sound

   Tube sound (or valve sound) is the characteristic sound associated with a vacuum tube amplifier (valve amplifier in British English), a vacuum tube-based audio amplifier. [1] At first, the concept of tube sound did not exist, because practically all electronic amplification of audio signals was done with vacuum tubes and other comparable ...

8. Mismatch loss - Wikipedia

   en.wikipedia.org/wiki/Mismatch_loss

   Mismatch loss represents the amount of power wasted in the system [dubious – discuss]. It can also be thought of as the amount of power gained if the system was perfectly matched [dubious – discuss]. Impedance matching is an important part of RF system design; however, in practice there will likely be some degree of mismatch loss. [1]

9. Differential signalling - Wikipedia

   en.wikipedia.org/wiki/Differential_signalling

   The technique minimizes electronic crosstalk and electromagnetic interference, both noise emission and noise acceptance, and can achieve a constant or known characteristic impedance, allowing impedance matching techniques important in a high-speed signal transmission line or high-quality balanced line and balanced circuit audio signal path.