# Changing Pitch and Intonation

Seven speaker-definition options control aspects of the fundamental frequency (f0) contour of the voice. Click on an option listed below for a description of its characteristics:

Description | Option Code
Baseline fall, in Hz | bf
Hat rise, in Hz | hr
Stress rise, in Hz | sr
Assertiveness, in % | as
Quickness, in % | qu
Average Pitch, in Hz | ap
Pitch range, in % | pr

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