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  2. Signal integrity - Wikipedia

    en.wikipedia.org/wiki/Signal_integrity

    Signal integrity or SI is a set of measures of the quality of an electrical signal. In digital electronics , a stream of binary values is represented by a voltage (or current) waveform. However, digital signals are fundamentally analog in nature, and all signals are subject to effects such as noise , distortion , and loss.

  3. Peak signal-to-noise ratio - Wikipedia

    en.wikipedia.org/wiki/Peak_signal-to-noise_ratio

    Peak signal-to-noise ratio (PSNR) is an engineering term for the ratio between the maximum possible power of a signal and the power of corrupting noise that affects the fidelity of its representation.

  4. Fidelity - Wikipedia

    en.wikipedia.org/wiki/Fidelity

    Fidelity is the quality of faithfulness or loyalty. Its original meaning regarded duty in a ... fidelity refers to the correspondence of the output signal to the ...

  5. High fidelity - Wikipedia

    en.wikipedia.org/wiki/High_fidelity

    High fidelity (often shortened to hi-fi or, rarely, HiFi) is the high-quality reproduction of sound. [1] It is popular with audiophiles and home audio enthusiasts. Ideally, high-fidelity equipment has inaudible noise and distortion , and a flat (neutral, uncolored) frequency response within the human hearing range .

  6. Signal - Wikipedia

    en.wikipedia.org/wiki/Signal

    Signal refers to both the process and the result of transmission of data over some media accomplished by embedding some variation. Signals are important in multiple subject fields including signal processing, information theory and biology. In signal processing, a signal is a function that conveys information about a phenomenon. [1]

  7. Helping Investors Separate Signal From Noise - AOL

    www.aol.com/finance/helping-investors-separate...

    Separating signal from noise in an attention economy. Finding value in a fast-changing world. Earnings from a company that straddles the digital and the physical.

  8. 5 Best Sectors To Invest in 2025, According to Experts - AOL

    www.aol.com/finance/5-best-sectors-invest-2025...

    The financial sector was up over 30% in 2024 and is poised for another strong year in 2025, according to a report from Fidelity. Even though the financial sector fluctuates based on the economy ...

  9. Noise figure - Wikipedia

    en.wikipedia.org/wiki/Noise_figure

    Noise figure (NF) and noise factor (F) are figures of merit that indicate degradation of the signal-to-noise ratio (SNR) that is caused by components in a signal chain.These figures of merit are used to evaluate the performance of an amplifier or a radio receiver, with lower values indicating better performance.