Haar Wavelet & Subband Filtering
Signal
Smooth Sine
Ramp + Edge
Staircase
Two-Tone Step
Pulse Train
Noisy Plateau
Level:
0
−
+
Show
Scaling φ (Lowpass)
Wavelet ψ (Highpass)
Shift k:
0
◀
▶
▶ Sweep
⏭ Step
Back
Inner Product: —
Filter Output: —
Select a decomposition level and step through shifts to see Haar sampling in action.
Continuous-Time View: Signal & Haar Function
Coefficient Strips (Approximation & Detail)
Subband Filter Bank View
Reconstruction: Approximation + Detail = Signal