revSetSpeechPitch

Type

command

Summary

Sets the pitch (whether the voice is high or low) to be used with text to speech.

Syntax

revSetSpeechPitch <pitchLevel>

Description

Use the revSetSpeechPitch command to change the way speech sounds.

The greater the pitchLevel, the higher-pitched the computer is when speaking text with the revSpeak command. Use a greater pitchLevel for a treble voice and a lower pitchLevel for a bass voice.

The pitchLevel is logarithmically related to the voice frequency: the range 30 to 127 corresponds approximately to the range from 50Hz to 12,000Hz. If you need to convert from Hertz (cycles per second) to the pitchLevel numbers used with this command, use the following custom function:

    function pitchFromHertz theHertzFrequency
        get (ln(theHertzFrequency) - ln(261.625))/ln(1.05946309434)
        return round(60 + it)
    end pitchFromHertz

The pitch specified by the revSetSpeechPitch command is used for all speeches following the command during the current session. If the computer is already speaking when you execute the command, the new pitch affects the current speech.

Important

The revSetSpeechPitch command is part of the Speech library. To ensure that the command works in a standalone application, you must include this custom library when you create your standalone. In the Inclusions pane of the Standalone Application Settings window, make sure the "Speech" library checkbox is checked.

Parameters

Name	Type	Description
pitchLevel	integer	An integer between 30 and 127.

Examples

revSetSpeechPitch 100

revSetSpeechPitch (the thumbPosition of scrollbar "Pitch")

Related

command: revSetSpeechSpeed, revSpeak

control structure: function

function: result

glossary: LiveCode custom library, command, Standalone Application Settings, custom function, text to speech, standalone application, execute

library: Speech library

Compatibility and Support

Introduced

LiveCode 2.0

OS

mac

windows

Platforms

desktop

server