Figure 1.

The 3D approach for the identification of acoustic cues: (1) to isolate the cue along the time, speech sounds are truncated in time from the onset with a step size of 5, 10, or 20 ms, depending on the duration and type of consonant; (2) to locate the cue along the frequency axis, speech sounds are highpass and lowpass filtered before being presented to normal hearing listeners; and (3) to measure the strength of the cue, speech sounds are masked by white noise of various signal-to-noise ratio. The three plots on the top row illustrate how the speech sound is processed. Typical correspondent recognition scores are depicted in the plots on the bottom row.