Adobe 22011292 User Guide - Page 207

ADOBE AUDITION 193 User Guide Lock to these settings only Check or uncheck this box as desired: • If checked, the overtones, base frequency, modulation, modulation frequency, frequency multipliers, and overtone intensities are constant; they do not vary over time. • Uncheck this box to dynamically change the proportion of any overtone over time by choosing the initial and final proportions. You may also dynamically change the frequency multipliers, base frequency, modulation, and modulation frequency for interesting effects. Click on the appropriate tab to change Initial and Final settings. Copy from Initial Settings This button in the Final Settings dialog copies the tone values from the Initial Settings window to the Final Settings window for editing. Base Frequency This is where you enter the main frequency to be used for sound generation. Modulate By This setting modulates the Base Frequency in pitch over a user-defined range. For example, a 100Hz setting modulates the original frequency by +- 100Hz. In other words, a 1000Hz tone would modulate between 950Hz and 1050Hz. Modulation Frequency This is the rate (times per second) at which the frequency modulates. Entering a value of 10, for instance, generates tones that seem to warble in amplitude at the rate of 10 times per second. The tones actually warble in pitch (frequency) as they should, but because of the variance in the perceived energy levels of different frequencies to the human ear, they seem to warble in amplitude. Frequency Components Use the Frequency Components controls to add up to five overtones to the fundamental frequency (Base Frequency). Enter the multiplier for each overtone below the Frequency Components slider(s). (The actual frequency will be this many times the fundamental.) Then, use the sliders to mix each of the individual components (0 to 100%) in proportion to one another. The overall gain (signal level) may be adjusted with the dB Volume sliders. If the Lock to these settings only box isn't checked, all of the values can change over the duration of the audio file, so that they morph from the initial to final settings. You can generate several effects with these five overtones. Experiment and have fun. dB Volume Use the db Volume sliders to select the overall gain for each of the right and left channels from -80db to 0dB. You can control both channels independently when generating stereo tones. Phasing Choose the appropriate phase: • Start Phase is the starting location in the cycle that will be produced. If you start at 0 degrees phase, waves will start at the baseline. If you start at 90 degrees, the wave will start at full amplitude (generating a noticeable click as well). If you are working in great detail with tones and need to have the phase "just so", this option allows you to control that. • Phase Difference purposefully allows the left channel to be out of phase with the right channel. A value of 0 will be completely in-phase, and 180 will be completely out of phase. • Change Rate dynamically changes the relative phase between the two channels of a stereo audio file over time at a given rate. For example, if you enter 1Hz, the phase difference will cycle through 360 degrees each second.