Generating DTMF/MF Tones |
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You can use DTMF/MF Tones dialog to generate the standard dial tones used by telephone companies. To display this dialog, choose Synthesis from the Tools menu, and choose DTMF/MF from the submenu.
From the Tools menu, choose Synthesis, and choose DTMF/MF from the submenu.
In the Dial string box, enter the phone number to be generated along with any necessary pause characters. Unknown characters will be ignored.
Drag the Amplitude fader to set the peak level of the waveform.
Click the radio button that corresponds to the type of tones you want to generate:
DTMF: Dual Tone Multi-Frequency signals are used by standard push-button telephones. They are generated using combinations of 679-, 770-, 852-, 941-, 1209-, 1336-, 1477-, and 1633-Hz sine waves.
MF: CCITT R1 signals are used internally by the telephone networks. They are generated by a combination of 700-, 900-, 1100-, 1300-, 1500-, and 1700-Hz sine waves.
In the Single tone length box, specify the output length (in seconds) of each tone.
In the Break length box, specify the length (in seconds) of the silence between tones.
In the Pause length box, specify the length (in seconds) of the silence that will be inserted when the Pause character is used.
Select
the Fade the
edges of each tone check
box to fade each tone in and out to prevent glitching.
In the Pause character box, specify the the character that will cause a pause between successive tones in the dial string.
Choose a position from the Insert new tone sequence at drop-down list to determine where the generated waveform will be placed within the existing sound file.
Click the OK button.
For more information about using processing dialog controls, click here.