The speech signal may be divided into spectral frequency bands, each band containing temporal properties of the envelope and fine structure. This study measured the perceptual weighting strategies for the envelope and fine structure in each of three frequency bands for sentence materials in young normal-hearing listeners, older normal-hearing listeners, aided older hearing-impaired listeners, and noise-matched young normal-hearing listeners. A novel processing method was designed to vary the availability of each acoustic property independently through noisy signal extraction. Thus, the full speech stimulus was presented with noise used to mask the different auditory channels. Perceptual weights were determined by correlating a listener's performance with the signal-to-noise ratio of each acoustic property on a trial-by-trial basis. Preliminary results demonstrate that fine structure perceptual weights remain stable across the four listener groups. However, a different weighting typography was observed between the listener groups for envelope cues. Preliminary results suggest that spectral shaping used to preserve the audibility of the speech stimulus may alter the allocation of perceptual resources. The relative perceptual weighting of envelope cues may also change with age. These effects were largely limited to envelope weights. [Work supported by NIA R01 AG008293.]