Signal-to-noise_ratio

# Signal-to-noise ratio  ## Microsims — p5.js ### Signal-to-noise ratio (p5.js) · `SNR` <div class="microsim-player"> <iframe src="https://editor.p5js.org/sciencenibber/full/n5v45QdK3" width="100%" height="480" frameborder="0" loading="lazy" sandbox="allow-scripts allow-same-origin" title="Signal-to-noise ratio — p5.js microsim"></iframe> </div> *The ratio of wanted signal power to noise power — the single number that most predicts whether you can recover it.* **Open in the editor:** [▶ fork this sketch](https://editor.p5js.org/sciencenibber/sketches/n5v45QdK3) · movement *IX · Foundations & the rest of the toolbox* · library `p5js` ### Related microsims Live sims on neighbouring articles — 6 of them inside this article's own Wikipedia link tree: - [[Communication_channel]] *(in tree)* - [[Decibel]] *(in tree)* - [[Distortion]] *(in tree)* - [[Noise_(electronics)]] *(in tree)* - [[Quantization_(signal_processing)]] *(in tree)* - [[Sine_wave]] *(in tree)* *Sim hosted off-article; the article owns the reference, not the runtime (WIKI_RULES §10.4). Placed by `g08_place_microsims.py`.*  ## Links (Wikipedia order)  `Acoustic_quieting` · `Acoustics` · `Active_noise_control` · `Additive_white_Gaussian_noise` · `Analog-to-digital_converter` · `Analog_Devices` · `Anisotropic_diffusion` · `Architectural_acoustics` · `Atmospheric_noise` · `Audio_equipment` · `Audio_system_measurements` · `Autoencoder` · `Background_noise` · `Bandwidth_(signal_processing)` · `Bilateral_filter` · `Block-matching_and_3D_filtering` · `Brownian_noise` · `Burst_noise` · `Carrier-to-noise_ratio` · `Channel_noise_level` · `Circuit_noise_level` · `Coefficient_of_variation` · `Colors_of_noise` · `Comb_filter` · [[Communication_channel]] · `Contrast-to-noise_ratio` · `Cosmic_noise` · `Data_acquisition` · [[Decibel]] · [[Distortion]] · `Dither` · [[Dynamic_range]] · `Eb/N0` · `Effect_size` · `Effective_input_noise_temperature` · `Electrical_impedance` · `Equivalent_noise_resistance` · `Equivalent_pulse_code_modulation_noise` · `Error` · [[Expected_value]] · `Film_speed` · `Filter_(signal_processing)` · `Financial_signal_processing` · `Fixed-point_arithmetic` · `Flicker_noise` · `Gaussian_blur` · `Gaussian_noise` · `Generation_loss` · `Gradient_noise` · `Grey_noise` · `Health_effects_from_noise` · `Ice_core` · `Image` · `Image_noise` · [[Information]] · `Infrasound` · `Interference_(communication)` · `Internet_forum` · `Isotope` · `Jitter` · `Johnson–Nyquist_noise` · `List_of_noise_topics` · `Lock-in_amplifier` · `Logarithm` · `Low-noise_amplifier` · `Low-pass_filter` · `Luminance` · `Mean_square` · `Median_filter` · `Modulation_error_ratio` · `Noise` · `Noise,_vibration,_and_harshness` · [[Noise_(electronics)]] · `Noise_(signal_processing)` · `Noise_(spectral_phenomenon)` · `Noise_(video)` · `Noise_and_vibration_on_maritime_vessels` · `Noise_barrier` · `Noise_control` · `Noise_figure` · `Noise_floor` · `Noise_generator` · `Noise_measurement` · `Noise_pollution` · `Noise_power` · `Noise_reduction` · `Noise_regulation` · `Noise_shaping` · `Noise_spectral_density` · `Noise_temperature` · `Nominal_level` · `Non-local_means` · `Omega_ratio` · `Optical_power` · `Pareidolia` · `Peak_signal-to-noise_ratio` · `Phase_distortion` · `Phase_noise` · `Pink_noise` · `Power_(physics)` · `Pseudorandom_noise` · [[Quantization_(signal_processing)]] · `Rane_Corporation` · `Root_mean_square` · `Sawtooth_wave` · `Sensitivity_index` · `Shannon–Hartley_theorem` · `Shot_noise` · `Shrinkage_Fields_(image_restoration)` · [[Signal]] · `Signal-to-interference-plus-noise_ratio` · `Signal-to-interference_ratio` · `Signal-to-noise_ratio_(imaging)` · `Signal-to-quantization-noise_ratio` · [[Sine_wave]] · `Sound_masking` · `Soundproofing` · `Spamming` · `Spectrum_analyzer` · `Standard_deviation` · `Subjective_video_quality` · `Test_statistic` · `Thermal_radiation` · `Thermogravimetric_analysis` · `Total_harmonic_distortion` · `Total_variation_denoising` · `Value_noise` · `Variance` · `Video_quality` · [[Voltage]] · `Wavelet` · `White_noise` · `Worley_noise` > Signal Processing concept · part of the Signal Processing Portal · movement IX · !09 解析 kaiseki.svg  !480 *Rendered from the live microsim (▶ motion).*  ## See it next [![Thermal noise|200](Thermal_noise_thumb.png)](Thermal_noise) *→ Thermal noise*  --- Back to Signal Processing Portal · the room · Semiotic gateway ## What it is Signal-to-noise ratio (SNR) is the ratio of the power (or amplitude) of a desired signal to the power of background noise, usually expressed in decibels, quantifying how much a signal is corrupted by noise. ## How it works / why it matters SNR is a fundamental measure of signal quality: higher SNR means the information stands out more clearly from the noise floor, directly bounding detection reliability and channel capacity. Signal-processing techniques such as filtering, averaging, matched filtering, and coherent integration aim to raise effective SNR, and it links directly to thermal-noise limits and the probabilistic theory of estimation and detection. ## Signs & universals Instantiates: - signal - noise - measurement ## Related [[Noise_(electronics)]] · Thermal noise · [[Information_theory]] · [[Probability]] · [[Autocorrelation]] · Signal Processing   *Built to the [[WT!P5_js_Microsim_Master_Class|p5.js Master Class]].*  ## Wikipedia : Wikitube **Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Signal-to-noise_ratio) : [Wikitube](https://en.wikitube.io/wiki/Signal-to-noise_ratio) ## Previous hub tags Tree parent: [[Oxygen]]. Legacy hubs: none. --- *Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*