Translations:Phase rotation/34/en

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We use the envelope wavelet to modulate a sinusoidal carrier signal of frequency Hz. The lower frequency of the positive-frequency passband of the modulated spectrum is Hz, and the upper frequency is Hz. The bandwidth is Hz. Because of symmetry, the negative-frequency passband has the same bandwidth (Figure 4b). If we take the inverse Fourier transform of the modulated spectrum, we obtain the symmetric modulated wavelet (Figure 4a).