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21.11. pitch-range Property

Another member of the voice characteristics of aural sub-properties, the pitch-range property is meant to be used in conjunction with the pitch property, and is designed to enable the Web author to set the variable range for a given speaking voice. While the pitch property is used to set the average pitch of a given spoken voice, the pitch-range property is essentially used to add the amount of inflection that is added to a speaking voice. A relatively small value leads to a dry voice, whereas a high value sets a highly animated voice.

The pitch-range property can either take a specific numerical value that falls anywhere in a range between 0 and 100, and the value inherit. A numerical value of 50 is the default value, and is the normal pitch range for a given English-speaking voice. A value of 0 produces a speaking voice that is a monotone, staying at the value fixed by pitch. A value of 100 produces a highly animated speaking voice. If you think of things in terms of emotionally charged speaking voices, a 0 value for pitch-range produces a dry, emotionless voice, whereas a value of 100 produces a highly emotionally charged voice. The named value inherit simply takes on whatever parent value may have been set for pitch-range. Listing 21.13 tries to add some emotion to the voices speaking the lines from Shakespeare's Hamlet.


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