Sampling Rate Calculator
Calculate the minimum sampling rate needed to capture a signal without aliasing, with optional oversampling ratio.
Hz
Minimum 2 (Nyquist), typical 4-8 for practical systems
Minimum Sampling Rate (Nyquist)
40,000 Hz
Practical Sampling Rate40,000 Hz
Data Rate (16-bit mono)640,000 bits/s
Minimum Sampling Rate (Nyquist) vs Maximum Signal Frequency
How to Determine Sampling Rate
The Nyquist theorem states the minimum sampling rate is twice the highest signal frequency.
Formulas
f_sample_min = 2 x f_max
f_sample_practical = Oversampling Ratio x f_max
In practice, engineers oversample (4x to 8x or more) because:
Example Calculation
Capture audio up to 20 kHz with 2x oversampling.
- 01Minimum (Nyquist): 2 x 20,000 = 40,000 Hz
- 02Practical rate: 2 x 20,000 = 40,000 Hz
- 03Data rate (16-bit): 40,000 x 16 = 640,000 bits/s = 640 kbps
Frequently Asked Questions
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