Adobe 22011292 User Guide - Page 204

190 CHAPTER 9 Generate Menu - Edit View Dial String This is where you enter the phone number for which you want to generate tones. You may enter other characters such as the "*" and "#" symbols, as well as extra digits "a", "b", "c", and "d". Entering the pause character (defined in Pause Character below) inserts a pause of a defined length. Tone Time Enter the milliseconds for which the tones will last. The standard time for DTMF tones is 100ms. Break Time This is the number of milliseconds of silence between successive tones. Pause Time When the pause character is used in the Dial String field, this is where you enter the length of the pause, measured in milliseconds. Pause Character When you enter this character in the Dial String field, Adobe Audition interprets it as a pause, and will insert silence for the duration specified in the Pause Time field. DTMF Signals With this option selected, Adobe Audition generates DTMF signals (normal push-button telephone type tones) using combinations of the frequencies 697Hz, 770Hz, 852Hz, 941Hz and 1209Hz, 1336Hz, 1477Hz, and 1633Hz. MF Signals (CCITT R1) Choose this option to have Adobe Audition generate MF signals (tones that are internal to telephone networks) using paired combinations of the frequencies 700Hz, 900Hz, 1100Hz, 1300Hz, 1500Hz, and 1700Hz. Custom This feature allows you to specify the combinations of frequencies to be used in generating signals. Select this option to enable the frequency entry boxes on the keypad chart below. Click in an entry box to change that frequency. Amplitude This setting determines the volume level (in percent) of the tones generated, where 100% means maximum volume without clipping. Twist "Twist" refers to how much louder the higher frequency tone is from the lower frequency tone. Enter a value (measured in dB) in the Twist field to increase the volume of the higher frequency tone accordingly. Reset to DTMF Press this button to clear any custom frequency entries and replace them with the standard DTMF frequency combinations. Presets This section allows you to recall and manage DTMF Signals presets. More information about Presets can be found in the "Looking at the Work Area" chapter. The presets in this function save everything, including the dial string. To see how effective these tones are, try entering your favorite phone number to generate the tones for it. Then hold the receiver of your phone next to the speaker and play the wave. Your phone will dial the number you entered. Preview Press this button to audition the current DTMF Signals settings before you apply them to the active waveform. Noise This function generates random noise in a variety of colors. Traditionally, color is used to describe the spectral composition of noise. Each color has its own characteristics.