Top: DWT power spectra P_j of the simulated Lyα forest samples with continuum as (1) ﹩F_{c}=2000﹩ (solid line), (2) ﹩F_{c}=2000( \lambda / \lambda _{0}) ^{2}﹩ (dot‐dashed line), where ﹩\lambda _{0}=4133﹩ Å, and (3) ﹩F_{c}=2000[ 1+0.1\mathrm{sin}\,[ 2\pi ( \lambda -\lambda _{\mathrm{min}\,}) / ( \lambda _{\mathrm{max}\,}-\lambda _{\mathrm{min}\,}) ] ﹩ (dotted line), respectively. Bottom: DWT power spectra P_j of the simulated Lyα forest samples with continua given as ﹩F_{c}=2000[ 1+d\mathrm{sin}\,[ 2\pi ( \lambda -\lambda _{\mathrm{min}\,}) / ( \lambda _{\mathrm{max}\,}-\lambda _{\mathrm{min}\,}) ] ﹩ and ﹩d=0.1﹩ (solid line), 0.2 (dotted line), 0.3 (short‐dashed line), 0.4 (long‐dashed line), and 0.5 (dot‐dashed line), respectively. The dot–long‐dashed line is the power spectrum of the transmission, ﹩P^{t}_{j}﹩. The 1 σ error bars are calculated from 100 samples. The scale j corresponds to ﹩2^{15-j}( 2) ﹩ h⁻¹ kpc.