User manual ANTARES JVP

[. . . ] JVP ª AnTares Voice Processor for TDM USERÕS MANUAL v 4. 3 JVP UserÕs Manual 1 JVP - AnTares Voice ProcessorTM © 1999 Antares Audio Technologies All Rights Reserved Antares Audio Technologies 464 Monterey Ave, 2nd Floor Los Gatos, CA, 95030 (408) 399-0008, (888) 332-2636 web: www. antaresTech. com JVP - AnTares Voice Processor software and this user manual are protected by copyright law. Making copies, adaptations, or derivative works without prior written authorization of Antares Audio Technologies is prohibited by law and constitutes a punishable violation of the law. Antares Audio Technologies retains all ownership rights to JVP software and other software offered by Antares Audio Technologies and their documentation. Use of JVP is limited by the license agreement printed on the envelope containing your original diskette. [. . . ] In addition, a comb Þlter with adjustable feedback is added before the JVP UserÕs Manual 25 Introducing JVP delay taps, to create even greater complexity. Using six taps, it is possible to create very complex textures from the most common material. JVP also allows you to use negative gain on the taps (the delayed signal has reversed polarity) for even more sound shaping possibilities. In a musical application, a copy of the instrumental or vocal sound would begin at each point (and at the same amplitude) as the pulses seen in the graph. Input Signal Input + 6 taps, + and - gain Input + 6 taps + feedback The details of using the Delay FX module are discussed in ÒThe Delay FXÓ on page 44. JVP In The TDM Environment The TDM software environment is supported by NuBus hardware from Digidesign called the DSP Farm. Each DSP Farm card contains 4 DSP56001 chips on which JVP and other DSP plug-ins run. The TDM system requires that one chip on the DSP Farm be used for the Mixer plug-in which comes with ProTools. Assigning a large number of ProTools voices will sometimes require the use of two DSP chips on the DSP Farm. JVP makes the most efÞcient use of the remaining DSP chips by running four processes on two audio channels on one chip. Normally, this would 26 JVP UserÕs Manual JVP In The TDM Environment take four DSP chips to accomplish. The illustration below shows the various DSP modules and the order in which processing occurs. L In R Parametric EQ L Out R Level De-esser Comp Delay FX Level Level Meter Gain Redux Gain Redux Level Meter The table below shows how many DSP chips are used as more JVP channels are allocated. Number of JVPs used Number of DSP chips allocated 1 1 1 2 2 mono to mono JVPs 2 mono to stereo JVPs 1 stereo to stereo JVP 1 mono to mono plus 1 mono to stereo JVP NOTE: Sometimes TDM will post a warning dialog saying that there are an insufÞcient number of DSP chips available when you have added a normally legal number of JVPs. This is because of the order in which TDM allocates the DSP chips as you add more inserts. This allows TDM to sort out its DSP allocation, allowing the greatest use of the available DSP chips. JVP UserÕs Manual 27 Introducing JVP General Controls Tool Display Button Tool Bypass Button Gain Reduction Indicator Clipping Indicator Output Level Meter Output Gain (dB) Output Level Control Input Gain (dB) Input Level Meter Input Level Control Setting Menu Processing Delay Display JVP contains four powerful DSP tools in one easy-to-use interface. It is conÞgured like a normal multi-effects processor with independent input and output level controls and metering with the DSP tools connected together in series. Input And Output Level Adjust JVP has high resolution level meters calibrated to a resolution of 0. 25 dB per pixel with a total range of 45. 5 dB. For stereo Þles, the level displayed is the maximum of both channels. The clipping indicator becomes lit when a sound greater than or equal to -0. 08 dB is input to JVP. The level adjust sliders have a gain range of +24 db to -60 dB in 1 dB increments. To zero the control, press <option> and click in the area of the slot in which it travels. 28 JVP UserÕs Manual General Controls Tool Bypass Buttons Tool Bypass Button Clicking on a Tool Bypass Button removes that tool from the signal path. This is useful for isolating the effect the tool is having on the Þnished sound. Clicking on all the Bypass buttons will leave only the input and output level adjust sliders in the signal path. Tool Display Buttons The interface for each of JVPÕs tools is contained on that toolÕs control page. To display the controls for a given tool, click on that toolÕs Display Button. The Tool Display Buttons work like radio buttons - only one can be active at a time. Tool Display Button Gain Reduction Indicators The Gain Reduction Indicators associated with the De-esser and the Compressor enable you to see these tools running when you are viewing other pages. [. . . ] The range of the control is from 0 milliseconds to 371. 3 milliseconds. Small delay values will thicken the sound or, if the Feedback Gain value is high, create a pitched effect. Feedback Gain Control The Feedback Gain control adjusts the amount of signal that is fed back through the comb Þlter. Negative gain settings reverse the polarity of the signal being fed back. When the control is set at 0 dB gain, the feedback section is effectively disabled. [. . . ]