User manual ARBORETUM HYPERPRISM-DAS

[. . . ] Hyperprism-DAS Manual Table of Contents Copyright ©1999 by Arboretum Systems, Inc. This documentation may not, in whole or in part, be copied, reproduced or translated without prior written consent of Arboretum Systems. Hyperprism-DAS Plug-Ins for MacOS AudioSuite Compatible Applications Digital Signal Processing Software by Arboretum Systems Inc. This documentation current to Hyperprism-DAS Version 1. 5, last revised 11/1/98 Copyright ©1997, 1998 by Arboretum Systems, Inc. This Documentation may not, in whole or in part, be copied, reproduced or translated without prior written consent of Arboretum Systems. What's New in Hyperprism-DAS v1. 5: q q q q q q New Harmonic Exciter, Bass Maximizer and Tube/Tape Saturation effects Frequency Shifter, Limiter and HyperVerb now included in Hyperprism-DAS Improved Low Pass, High Pass Filters; no more distortion Improved Compressor and Noise Gate New simplified Installation procedure Now compatible with Emagic Logic Audio, Avid Media Composer 7. 0 and Avid Xpress 2. 0 Contents License Agreement Introduction to Hyperprism-DAS q q q q q Welcome to Hyperprism-DAS Hyperprism-DAS Effects System Requirements About the Demo Version Installing Hyperprism-DAS r r r r r Before You Install Easy Install Custom Install DAE Memory Management Problems? q q q q Using Hyperprism-DAS Hyperprism-DAS Parameter Sliders About Stereo Effects AudioSuite Preview Buffer Effects Processes q q q q q Hyperprism Filter Processes Hyperprism Modulation Processes Hyperprism Delay and Reverb Processes Hyperprism Stereo Processes Hyperprism Miscellaneous Processes Appendix A: Troubleshooting Appendix B: About Digital Audio Files About This Manual The documentation may be viewed or printed from any browser, such as Netscape Navigator or Microsoft Internet Explorer. [. . . ] Here is the first 200ms of impulse responses from a chapel and a large hall. (NOTE: Cyan = Left Channel and Magenta = Right Channel) Looking at these plots we can observe a number of distinguishing features. Some of these features include: q Smooth decay of late reflections (i. e. little flutter) q q q Relatively uncolored frequency response of the late reflections (i. e. no ringing) Sharp attack (usually) Extremely high echo density While these features are generalizations, most naturally occurring reverberation has these properties, especially for rooms and halls with "good acoustics. " Now lets examine some common digital reverberators, including a TC Electronic M2000 and a Lexicon 480L. Sound Forge Reverb: Pros: q Somewhat colorless late decay Cons: q q q Severe lack of echo density Fluttery late decay Echo density does not increase with time Digitech GigaVerb: Pros: q High echo density Cons: q q Very long attack time (it takes over 100ms to reach maximum amplitude) Highly colored late reflections (i. e. resonant and ringy) Power Technology DSP-FX Reverb: Pros: q Moderate echo density (though not always enough) Cons: q q Highly colored late reflections (i. e. metallic and resonant) Lack of echo density in the early reflections (causes "chatter" for some sounds) TC Electronic Native Reverb: Pros: q Deficiencies are not a pronounced as some reverbs Cons: q q q Echo density does not increase fast enough Fluttery late decay Colored late reflections (i. e. resonant and ringy) Waves TrueVerb: Pros: q q Moderately smooth decay of late reflections (i. e. minimal flutter) Late reflections are fairly colorless Cons: q Lack of echo density in the early reflections (causes "chatter" for some sounds) TC Electronic M2000: Pros: q q Very high density and diffusion Moderately smooth decay of late reflections (i. e. . minimal flutter) Cons: q Slightly colored late reflections (i. e. . ringy) Lexicon 480L: Pros: q q q Drastic improvement in sound quality compared to most reverbs Sharp attack Smooth decay of late reflections (i. e. minimal flutter) Cons: q q Slightly colored late reflections (i. e. resonant and ringy) Echo density could be higher Arboretum Systems HyperVerb: Pros: q q q q q Very high echo density Echo density increases with time at a sufficiently high rate Smooth decay of late reflections (i. e. minimal flutter) Highly uncolored frequency response in the late reflections Sharp attack if desired Cons: q Could benefit from higher echo density for very large room sizes (easy to fix at the expense of somewhat higher processing requirements) Of course none of this "scientific" data guarantees that the HyperVerb actually sounds better than any of these reverberators, so we welcome you to give it a serious listen. Although we don't claim that the HyperVerb is the ultimate digital reverberator, we think you will find the level of quality very high. If you have any questions or comments regarding the HyperVerb please contact Chris Weare at cweare@arboretum. com. Impulse Response Files: File Name CoolEdit-ConcertHall. wav Digitech-GigaVerb. wav DSP-FX MediumHall. wav DSP-FX MediumRoom. wav HyperVerb-MediumHall. wav HyperVerb-MediumHall2. wav HyperVerb-MediumHall3. wav HyperVerb-BrightLargeHall. wav HyperVerb-StateCapitol. wav Lexicon 480L-SmallStage2. wav Sound Forge-RichHall. wav TCWorks-NativeReverbDemo. wav TrueVerb-MediumConcert. wav WaveLab-HallReverb. wav Manufacturer Syntrillium DigiTech Power Technology Power Technology Arboretum Systems Arboretum Systems Arboretum Systems Arboretum Systems Arboretum Systems Lexicon Sonic Foundry TC Electronic Waves Steinberg Product/Type Cool Edit Pro GigaVerb DSP/FX DSP/FX HyperVerb HyperVerb HyperVerb HyperVerb HyperVerb 480L Sound Forge Native Reverb TrueVerb WaveLab Preset Concert Hall Lite Studio Strat (GSP2101) Medium Hall Medium Room Medium Hall Medium Hall 2 Medium Hall 3 none State Capitol Small + Stage (???) Rich Hall (fixed demo preset) Medium Concert (???) These impulse response files are available from ftp. arboretum. com/pub/demos/reverb/. we have not included the impulse response for the M2000 Hall since it is copyrighted by SEK'D. Lexicon 480L small stage impulse response file is also copyrighted by SEK'D, but it is available as a demo file free of charge on the SEK'D web site at http://www. sekd. com/Download/irdemo. zip, although for your convenience we have provided it here. Hyperprism Stereo Manipulation Processes q q q q q q q Pan Auto Pan Doppler Quasi Stereo Stereo Dynamics More Stereo M-S Matrix Pan Pan is similar to the "balance" control on a home stereo, determining which channel the sound comes through. It moves the input sound from the left speaker to the right speaker, following the mouse position, and combines this with attenuation, or gain, if desired. Hyperprism-VST users: Make sure you have your stereo tracks panned 100% left and right or you will get no effect with this process. Pro Tools/Avid users: Note that there is no direct mono-to-stereo processing under the AudioSuite format. [. . . ] Bit-Depth & Dither In addition to multiple sample rates, you may be working with either 24-, 16- or 8-bit files. Unfortunately, lower bit depth and sample rate settings can compromise the audio quality of your sound files. Lower sample rates lose high frequency response, and 8-bit storage causes a reduction of your sound's dynamic range, resulting in noisier, "grainy-sounding" audio, especially during softer passages. If you are creating 8-bit audio (for example, for multimedia or Internet distribution), you will get best results if you do all your signal processing at 16-bits and 44. 1 or 48 kHz, and then create an 8-bit file at the end of the process. [. . . ]