Doppler Shift Calculator
Compute observed frequency f' = f·v/(v−v_s) for a source approaching.
Input Data
Input Source frequency f.
Hz
Input Speed of sound v.
m/s
Input Source speed v_s.
m/s
Results
1,111.111111Hz
f′ = f·v/(v−v_s), source approaching.
At a glance:Doppler Shift Calculator: enter parameters to compute results; complements related calculators.
Formula
f′ = f·v / (v − v_s) (source approaching).
How to Use
- Enter source frequency, speed of sound and source speed.
- It returns observed frequency.
Case Studies
f=1000, v=340, v_s=34 → f′≈1111 Hz
f′ = 1000·340/306 ≈ 1111.1 Hz.
FAQ
If v_s approaches v?
Denominator → 0, observed frequency → ∞ (pre-sonic-boom).
Related Tools
References
Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.