The PSA is a free field audiometer designed for audiologists involved in testing young children. It features One-handed operation, silent buttons and a variety of light and sound stimuli.
The PSA includes white noise as well as warble and narrow band stimuli. White noise has been shown to be especially useful for evoking responses in the early months.
The two stimuli, light and sound, are controlled silent buttons. Both stimuli can be presented simultaneously by letting one finger touch both buttons.
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