A centrifugal blower housing that includes sound attenuating features to decrease the noise generated by the pressure fluctuations due to blade pass. The blower housing includes at least one sound attenuating cavity positioned along the exhaust section integrally formed as part of the blower housing. The sound cavity creates a sound dampening zone near the outlet of the blower housing to attenuate the sound generated by the rotating impeller. The blower housing further includes an angled cut off portion positioned near the intersection of the exhaust section and the scroll section of the blower housing. The angled cut off portion creates an uneven surface that disrupts the pressure fluctuation created as the impeller blades pass over the cut off edge surface. The angled cut off portion extends into the interior of the exhaust section and defines an irregular surface along at least a portion of the exhaust section.