User manual ADOBE AUDITION 1

[. . . ] Adobe Audition ® TM User Guide Legal Notices Copyright © 2003 Adobe Systems Incorporated. All rights reserved. Adobe® AuditionTM User Guide for Windows®. If this guide is distributed with software that includes an end-user agreement, this guide, as well as the software described in it, is furnished under license and may be used or copied only in accordance with the terms of such license. Except as permitted by any such license, no part of this guide may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise, without the prior written permission of Adobe Systems Incorporated. [. . . ] This will cause an echo of the specified volume to occur at the given delay after convolution. Besides just echoes, you can add filtered versions of echoes by entering the minimum and maximum frequencies to echo. To echo all frequencies outside the range, add a full spectrum echo (e. g. from 0Hz to 22050Hz) at a specific delay, then add another echo at the same delay, but with different minimum and maximum values, and the opposite Left and Right percentages (e. g. at -100% instead of 100%). · Delay: This parameter sets the amount (in milliseconds) by which samples are delayed. For pre-echoes, place at least one echo that is full spectrum (Minimum=0Hz, Maximum=22050Hz) at a larger delay (like 1000ms). Then any echo placed before 1000ms will be a pre-echo. · Left : This setting specifies the left volume (in percent) at which to make the echo or selection being added to the impulse. · Right: This setting specifies the right volume (in percent) at which to make the echo or selection being added to the impulse. Global Settings These settings effect how the given impulse will be used during convolution. · Volume: If the convoluted audio comes out too soft or too loud, enter an appropriate value to amplify or attenuate the audio. · Shift: This value is generally set to one-half the FIR Size when building impulses from scratch, to compensate for the delay incurred when the minimum delay used was only one-half the FIR size. Adjust this shift setting if you find that the convoluted audio is migrating too far to the right with respect to the original audio. 178 CHAPTER 8 Effects Menu ­ Edit View View Settings These settings affect the impulse display. · Left: Select this button to enable display of the impulse for the left channel only. · Right: Click this button to enable display of the impulse for the right channel only. · View: Both Selecting this button enables display of the impulse for both the right and left channels. · Normalized View: If this option is checked, the impulse's amplitude is displayed so that it exactly fits in the display vertically. Preview Press the Preview button to audition the current Convolution setting before you apply it to the waveform. The selection is looped until you press the Stop button. Since Adobe Audition's Previews are dynamic, this gives you the opportunity to make and hear processing adjustments as the selection is continuously played. Distortion Use this function to create effects such as a blown car speaker, a muffled microphone, and an overdriven amp. Have fun making your audio sound really, really bad!(Of course, it's great for adding fuzz to guitar licks to get that "authentic" heavy metal sound. ) Distortion dialog Positive/Negative Tabs You can specify separate distortion curves for positive and negative sample values. Select the tab corresponding to the distortion curve you want to display. If the Symmetric box is checked, these tabs become inactive (and are marked Symmetric). ADOBE AUDITION 179 User Guide Copy from Positive Press the Copy from Positive button (available in the Negative tab) to copy the positive curve to the Negative window. Symmetric If Symmetric is checked, the positive and negative curves are identical. To specify separate Positive and Negative curves, uncheck Symmetric and choose the appropriate tab. Distortion Graph This graph depicts the input sample value in dB along the x-axis (left and right) and the output sample value in dB along the y-axis (up and down). A line that flows directly from the lower-left to the upper-right (which is the default) depicts a signal that's been left untouched, since every input value goes to the exact matching output value. Adjusting the shape of this line will adjust the input to output assignments. [. . . ] If the file you're loading contains loops and silence blocks, they'll be expanded while loading. Vocoder An Adobe Audition Multitrack Effect that will modulate one signal with another. 366 VOX The Dialogic ADPCM format is commonly found in telephony applications, and has been optimized for low sample rate voice. It will only save mono 16-bit audio, and like other ADPCM formats, it compresses to 4 bits/sample (for a 4:1 ratio). This format has no header, so any file format with the extension . vox will be assumed to be in this format. WAV Files with the . wav extension typically are Microsoft Windows uncompressed PCM audio files. [. . . ]