# Pitch [:pitch]

The Pitch command raises, by the value specified, the frequency of uppercase letters spoken in typing mode using the typing table (spoken one letter at a time). The default frequency difference between spoken lowercase and uppercase letters is 35 Hz. The frequency difference enables users to distinguish between uppercase and lowercase letters. You can return the pitch increment for uppercase letters to the default value by specifying the command [:pitch 35] or by restarting Speak.

DECtalk adds the value of the argument, DD (in Hertz), as a pitch increment, to the uppercase letters in the next phoneme string it processes.

However, the Pitch command is asynchronous. Place a Sync command in the character stream after the Pitch command to ensure that the Pitch command is processed before the letters that follow it in the buffer you are using.

SYNTAX: | [:pitch DD]
ABBREVIATION: | none
ALTERNATE COMMAND: | none
OPTIONS: | none
PARAMETERS: | frequency in hertz
DEFAULT VALUE: | 35
EXAMPLES: | [:pitch 60] bBcCdD [:pitch 35] eEfFgGhH

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