Sampling & Nyquist Calculator

Free signal processing tool for sampling rate analysis and aliasing detection

Sampling Parameters

Examples

Quick Reference

Nyquist Theorem:

Key Points:

  • • Sample at least 2× signal frequency
  • • Aliasing occurs when undersampled
  • • Oversampling improves signal quality

About Sampling & Nyquist Rate Calculations

Sampling Theory Fundamentals

The Nyquist-Shannon sampling theorem is fundamental to digital signal processing. It states that a continuous signal can be completely reconstructed from its samples if the sampling rate is greater than twice the highest frequency component of the signal.

Applications

  • • Audio Processing: CD quality (44.1 kHz), digital audio recording
  • • Telecommunications: Digital communication systems, modulation
  • • Medical Imaging: MRI, ultrasound, medical signal processing
  • • Control Systems: Digital control, sensor data acquisition
  • • RF Engineering: Software-defined radio, signal analysis

Key Concepts

Nyquist Rate

Minimum sampling rate: 2 × highest signal frequency

Ensures perfect signal reconstruction

Aliasing

Distortion caused by undersampling

Creates false frequency components in the signal

Oversampling

Sampling above the Nyquist rate

Improves SNR and simplifies anti-aliasing

How to Use

  1. 1. Enter your signal frequency and unit
  2. 2. Enter your sampling frequency and unit
  3. 3. View the analysis results automatically
  4. 4. Check if sampling rate is sufficient
  5. 5. Review recommendations for improvement

Network Analysis

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Engineering

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Sampling & Nyquist Calculator
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Timers

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Calculator

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Fuel to Distance Calculator
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Screensaver

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Utilities

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Microphone Test
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Flashlight Tester
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Online Tally Counter
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Printable

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