Lexicon PCM92 Owner'S Manual Download

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PcM92 MeNU NAvIGAtIoN MAP - MoNo deLAy ALGoRIthMS

Summary of Contents for PCM92

Page 1: ...Professional Audio Equipment ...

Page 2: ...switch with a contact separation of at least 3 mm in each pole shall be incorporated into the electrical installation of the rack or building FOR UNITS EQUIPPED WITH EXTERNALLY ACCESSIBLE FUSE RECEPTACLE Replace fuse with same type and rating only MULTIPLE INPUTVOLTAGE This equipment may require the use of a different line cord attachment plug or both depending on the avail able power source at in...

Page 3: ...eir used electronic products free of charge to designated collection facilities or to a retailer if you purchase a similar new one For Countries not mentioned above please contact your local authorities for a correct method of disposal By doing so you will ensure that your disposed product undergoes the necessary treatment recovery and recycling and thus prevent potential negative effects on the e...

Page 4: ...RN AUTHORIZATION from the factory where all parts and labor will be covered up to a period of 1 year A Return Authorization number must be obtained from Lexicon Professional by telephone The company shall not be liable for any consequential damage as a result of the product s use in any circuit or assembly 4 Lexicon Professional reserves the right to make changes in design or make additions to or ...

Page 5: ...CP IP Basics 15 Connecting the Computer Directly to the PCM92 16 Setup of a Simple Isolated Ethernet Network Using DHCP 16 Virtual Private Networks VPN 16 Network Considerations and Limitations 17 Network Troubleshooting 17 System Menu 18 Audio Setup 18 Machine Config 20 MIDI Control 20 Tempo Control 20 Network Config 21 HiQnet Config 21 Preset Chain Config 21 Foot Pedal Calibration 21 Footswitch ...

Page 6: ...tation 27 The Algorithms 29 Chamber Stereo and Mono 29 Random Delay Stereo and Mono 29 Hall Stereo and Mono 30 Random Hall Stereo and Mono 31 Plate Stereo and Mono 31 Dual Delay Stereo and Mono 31 Resonant Chords Stereo and Mono 32 Chorus Flange Stereo only 33 Concert Hall Stereo only 33 Room Stereo and Mono 33 Signal Generator 33 The parameters 35 PCM92 Menu Navigation Maps 43 PCM92 Specification...

Page 7: ...ds The PCM92 gives new capabilities to our traditional reverbs by adding mul timode filters in the audio flow This allows more exact shaping of the reverb while still maintaining the distinctive Lexicon sound All reverbs also have an Infinite switch that allows the reverb to run forever a useful feature for creating unusual backgrounds and sound effects Lexicon s new Room algorithm provides a more...

Page 8: ......

Page 9: ...t the change 4 A B and C Knobs These knobs adjust parameters shown in the Display Turn Knob A to adjust the parameter in the top row Knob B to adjust the parameter in the second row and Knob C to adjust the parameter in the third row Press Knob A to access additional pages of parameters when in the Soft Row Press Knob C to view the current preset s Algorithm Bank number Program number and MIDI cha...

Page 10: ...the Select knob to load a preset 11 COMPARE This button is used to compare an edited preset against its unedited self When a preset is loaded this button s LED is off As soon as the preset is edited in any fashion the LED lights If the button is pressed the edited state is temporarily stored and the preset is reloaded from the file system During this period of time editing is disallowed and the bu...

Page 11: ...ed and levels up to 20dBu maximum full scale 6 FOOT CONTROLLER FOOTSWITCH JACKS The Footswitch jack supports a momentary footswitch allowing you to control switchable settings Connect a footswitch to the Footswitch jack using a 1 4 TRS cable The Foot Control jack supports a foot pedal or expression pedal allowing you to control sweepable parameters Connect a foot pedal to the Foot Control jack usi...

Page 12: ...6 ...

Page 13: ... arrive at the Machine or System Category Selection screen In this case just turn the Select knob to select a category the current category is marked with an asterisk and press the Select knob to load it You will then be taken to the Preset screen The Preset screen shows the current preset and configuration Note that the Preset screen has two views System view for System Presets and Machine view f...

Page 14: ...set 1 From the Preset screen turn the Select knob to scroll through the avail able presets in the current category Presets are arranged in categories within the PCM92 see Changing Categories below for more informa tion The preset name blinks after you turn the Select knob indicating that you are in preset selection mode 2 Press the Select knob to load the preset you ve selected The display briefly...

Page 15: ...preset 4 Select a preset with the Select knob and press the Select knob to load it System Presets and Machine Presets The PCM92 features a single powerful processor which can be used as up to four virtual machines For example you could send the left input signal through a mono reverb in one virtual machine and send the right input sig nal through a mono delay in another virtual machine You could t...

Page 16: ...Machine Menu Press Machine Button Press Machine Button Press Back Press Select Press Back Press Select Press Back Press Select Press Back Press Select The configuration icon The Configuration icon appears at the upper right corner of the Display It tells you if a System Preset or a Machine Preset is loaded When a System Preset is loaded a border appears around the Configuration icon and the words ...

Page 17: ...ycle through the virtual machines within a System Preset Each virtual machine contains a set of parameters that you can edit and adjust When a virtual machine is selected three of its parameters appear at the bottom of the Display Adjust the first parameter with Knob A the sec ond parameter with Knob B and the third parameter with Knob C To see the next set of parameters you can adjust press Knob ...

Page 18: ...t Storing Preset appears briefly in the Display and you are returned to the Preset screen Creating a new System Preset One way to create a new System Preset is to edit an existing System Preset and save it to the User category Another way is to start from scratch as described below 1 With any System Preset loaded press the Select knob The System menu appears 2 Highlight Machine Config with the Sel...

Page 19: ...hine Button to choose the next Machine Preset if there is one and repeat steps 5 through 7 9 Repeat step 8 for each virtual machine in your System Preset 10 Press the Machine Button until your System Preset is selected 11 Press the Store button and follow the Storing a Preset procedure described on page 12 ...

Page 20: ...ual machine Cascade Stereo The left and right signals are processed together in one virtual machine and the resulting signal is sent to a second virtual machine where they are again processed together Cascade Mono The left signal is sent through two virtual machines in sequence while the right signal is sent through two additional virtual machines in sequence The left and right signals are process...

Page 21: ...on of this section for more information Factory defaults for the Internet Protocol IP settings for the PCM92 are as follows Auto IP DHCP Address 169 254 x x where x x is determined by the PCM92 box numbers Subnet Mask 255 255 0 0 Gateway 0 0 0 0 DHCP Support Enabled Overview of TCP IP Basics IP address An identifier for a computer or device on a TCP IP network Each device in a network has its own ...

Page 22: ...hts so that network settings can be changed if necessary 1 Connect the included Ethernet cable to both the PCM92 and the com puter 2 Apply power to the PCM92 and wait for it to boot 3 Open the standalone application Setup of a Simple Isolated Ethernet Network Using DHCP Assumptions Using OS X 10 4 or later Computer has a working Ethernet network adapter You have an Ethernet switch router with DHCP...

Page 23: ...ections Network Considerations and Limitations Without a VPN there can be no access from the outside world to any PCM92 that is behind a Network Address Translation NAT router One to One NAT and port forwarding will not work Firewall Considerations The PCM92 uses port 3804 udp and tcp to communicate with the System Architect software Make sure that you configure your firewalls correctly so that da...

Page 24: ... you were ping ing in a timely manner it means that you have a valid network connection between the two devices If you receive a No route to host or 0 packets received message this indi cates that your computer is not communicating with the device System Menu The System Menu lets you adjust several settings in the PCM92 To access the System Menu press the Select knob while a System Preset is loade...

Page 25: ... indicates the data is OK Invalid indicates that the Validity bit was set in a frame of incoming data and that the data attached to it may be corrupted This bit may also be sent when the transmitting device is paused Mode Select Consumer to send information in S PDIF format Select Professional to send information in AES format Confidence Error 0 indicates no problem 1 indicates the PCM92 is detect...

Page 26: ...ch virtual machine s channel here Choose from 0 15 Bank Dump Lets you copy an entire bank of presets from the PCM92 to another device via MIDI For a map of banks and presets see page 26 to see the current preset s bank number press Knob C while viewing the Preset screen When Bank Dump is highlighted turn the corresponding B or C Knob to select a bank Press the corresponding B or C Knob to send the...

Page 27: ...e toe is all the way up and press Knob A Then rock the pedal all the way forward toe down and press Knob B Footswitch Setup Define the footswitch buttons functions here Restore Factory Defaults Returns the PCM92 to its original state as shipped from the factory Machine Menu The Machine menu lets you adjust settings for a single virtual machine To access the Machine menu press the Select knob while...

Page 28: ...2 has added functionality that lets you change presets using a footswitch and also change various parameters with a foot pedal also known as a foot controller Preset Chains how to change presets with a foot switch You can create sequences of System presets called preset chains that you can cycle through using an optional footswitch Connect the footswitch to the Footswitch jack on the back panel us...

Page 29: ...s the Back button or Knob A to exit this menu How to Control Parameters with a Foot Pedal To assign a parameter to a foot pedal 1 Using a 1 4 TRS cable connect a foot pedal to the Foot Control jack on the back panel 2 With any Machine Preset loaded press the Select knob 3 Highlight Foot pedal Assignments and press the Select knob 4 Press Knob A to add a new parameter 5 Turn the Select knob to sele...

Page 30: ...on individual machines via MIDI you can only change the System Presets You would arrange the MIDI Control Menu in this way MIDI ON Sysex Device ID 0 System MIDI Ch 0 Each subsequent PCM Device would be the next number 0 15 Machine 1 MIDI Ch OFF Machine 2 MIDI Ch OFF Machine 3 MIDI Ch OFF Machine 4 MIDI Ch OFF Setup 2 More Control This setup allows the user to control all the aspects of the PCM Dev...

Page 31: ...elect knob until Base Channel is highlighted 7 Turn Knob B to select the base channel 0 15 8 Turn the Select knob until Machine 1 is selected 9 Turn Knob B to select the channel for Machine 1 0 15 10 Repeat steps 8 9 until you have selected channels for each virtual machine 11 Press the Back button twice to return to the Preset screen Now the PCM92 unit is identified by the selected base channel a...

Page 32: ...he actual range of the parameter is greater than 127 MIDI control might be somewhat coarse This is most noticeable with large delays When MIDI is enabled the PCM92 automatically sends MIDI messages through the MIDI Out port for soft row parameters and preset loads when ever those actions are performed via the front panel controls Soft Row parameter MIDI CC Map Soft Row Parameter MIDI CC Parameter ...

Page 33: ...equested preset lives 0x__ Preset Preset ID 0xF7 EOX Command 1 Preset Dump This sysex is transmitted by a MIDI sequencer or by PCM92 The PCM92 may transmit this dump in response to a request or by means of a front pan el action The PCM92 receiving this dump will store the encapsulated preset data in the designated location Byte Definition Comments 0xF0 Sysex message 0x06 Lexicon Manufacturer ID 0x...

Page 34: ...resets will be transmitted in a special form Only presets from User banks may be requested Factory banks will not be transmitted Byte Definition Comments 0xF0 Sysex message 0x06 Lexicon Manufacturer ID 0x__ Product ID 0x__ Device ID 0x02 Command Request Preset Bank Dump 0x01 Size LSB 0x00 Size cont 0x00 Size cont 0x00 Size MSB 0x__ Bank Bank to fetch 0xF7 EOX ...

Page 35: ...y line per input channel Each delay line has two out puts called voices Each voice has independent delay time up to and over 9 seconds plus an additional second provided by the randomizers described in the next paragraph output level feedback control filtering independent filters for feedback and output and panning Random Delays have the same diffusion controls as Dual Delays In addition to this b...

Page 36: ... venue for classical ensembles but has proven to be useful for all types of music A hall is comparatively large with wall to wall distances that are typically several tens of meters Smaller halls may be used for smaller ensembles The characteristic sound of a hall includes very low initial reflection density with little reflection energy before 60 100 mil liseconds Density buildup is more gradual ...

Page 37: ...gradual because of the larger distances between reflecting surfaces Reverberation time is somewhat longer as well Finally in most halls lower frequencies reverberate longer than higher fre quencies One of its charms is a bit of irregularity in the decay In some cases very small rooms with precisely pitched instruments this modulation may not be the best choice But in general this is a time tested ...

Page 38: ...dependently The voices resonate to some degree with any input but the most effective excitation contains all frequencies like percus sion Other instruments may give a quality of tonal ambience in which cer tain notes rise ethereally from the background The output of the resonator is then fed into a stereo plate reverb effect The two algorithms differ in the way pitches are assigned to the resona t...

Page 39: ...cert Hall Stereo only This is a recreation of one of Lexicon s oldest algorithms It was an essen tial part of many of the mixes of the late seventies and eighties It is a less dense reverb allowing it to add lushness to a mix without stepping on the dry source material It also has quite noticeable modulation causing strong pitch effects at higher settings The reverb tail has a life of its own desi...

Page 40: ...34 ...

Page 41: ... for example Level may appear as RightInLvl or OutLvl To see the parameters in context refer to the charts beginning on page 43 Bandwidth This parameter lets you set the bandwidth of a multimode filter Bandwidth is specified in octaves or fractions thereof Bass Boost Room This parameter is closely tied to the Bass Crossover parameter It controls the boost or cut of signal below that crossover Depe...

Page 42: ...ge Delay Level Master Controls all delays in the algorithm Each voice has its nominal gain value adjusted by this percentage Delay Time Echo Delay Delay time defines the time offset of a delay voice in milliseconds or in fractions of tempo quarter note eighth note which is defined by the tap tempo or by midi tempo It is used in many of the algorithms not just the delays In all cases it does the sa...

Page 43: ...t channels Early signals include echoes reflections and the room reflec tion patterns Infinite This parameter captures the reverb tail as an infinite loop This may be use ful in music where a note or chord can be extended It is also useful in post production for creating ambience backgrounds Input Level Input Level controls the amount of signal admitted into the process from a single input channel...

Page 44: ...he post filter delay voice across the left right soundstage Pattern Selects a space available in the selected Category see Category parameter Reflection Delay Delay Time A reflection delay is a delay tap taken from one of the inputs and sent to one of the outputs It is often called a delay voice Depending on the algorithm there may be one or more reflection delays for each input channel Some of th...

Page 45: ... parameter Reverb PreDelay Predelay This is a delay that s added to the diffused signal before it enters the main part of the reverb For all intents it may be considered as delay that is added to the reverberated signal It is used to temporally separate the reverb from the dry signal Reverb Spin Spin This is usually simply called spin It controls the speed of the reverb random izer Spin is also co...

Page 46: ...a voice The voice may use the LFO output or the inverted LFO output Shape Early Shape The Shape parameter is closely tied to the Spread parameter Shape controls how energy is injected into the reverberator A low value means that sound enters the reverb at the beginning of the spread window A high value means that most sound moves into the reverb at the end of the spread window A value somewhere in...

Page 47: ... that dramatically changes its spatial characteristics The tail can be changed to feel narrower even down to mono or wider than normal stereo There are values for the parameter to encode the tail in such a way that it decodes into surround channels The parameter operates in the range of 0 to 360 degrees with an incremen tal change of 1 degree The matrix uses Sine Cosine rules so that power dis tri...

Page 48: ...lter as any of 4 basic types in order Lowpass Highpass Bandpass Notch Band reject The filter provides a subset of filter types available to a Biquad filter Wet Dry Mix Wet Dry Mix is the proportion of wet processed signal to dry unpro cessed signal ...

Page 49: ...43 PCM92 Menu Navigation Map System View and Machine View ...

Page 50: ...44 PCM92 Menu Navigation Map Stereo Hall Algorithms ...

Page 51: ...45 PCM92 Menu Navigation Map Stereo chamber and room Algorithms ...

Page 52: ...46 PCM92 Menu Navigation Map Stereo Delay Algorithms ...

Page 53: ...47 PCM92 Menu Navigation Map Stereo Effects Algorithms ...

Page 54: ...48 PCM92 Menu Navigation Map Mono Hall Algorithms ...

Page 55: ...49 PCM92 Menu Navigation Map Mono Chamber and room Algorithms ...

Page 56: ...50 PCM92 Menu Navigation Map Mono Delay Algorithms ...

Page 57: ...51 PCM92 Menu Navigation Map Mono Effects Algorithms ...

Page 58: ...52 ...

Page 59: ...0 3dB D A Conversion 24 bits D A Dyn Range 112 dB unweighted 115 dB A weighted THD 002 20Hz 20kHz at 4dBu Crosstalk 1kHz 90 dB at 20Hz 20kHz with 20dBu input Digital Audio IO Connectors One Male XLR Output One Female XLR Input Two FireWireTM Ports Format AES EBU FireWire 400Mb Word Size 24 bits Sample Rates Internal 44 1kHz 48kHz 88 2kHz 96kHz Accuracy within 50ppm External 44 1kHz 48kHz 88 2kHz 9...

Page 60: ...Stereo and Mono Hall Stereo and Mono Signal Generator Storage Media Type I Compact Flash Can hold up to 1536 user presets Machine Configurations 44 1K 88 2K Two Mono Super mono capable Single Stereo Super stereo capable Two Cascaded Mono pairs Cascaded Stereo Two Mono cascaded into single Stereo Dual mono in stereo out with combined outputs Single Super Stereo Two Stereo Dual Super Mono Four Mono ...

Page 61: ... 0 W x 1 75 H x 12 5 D 483mm x 44 5mm x 317 5mm Weight 8 65 lbs Regulatory Approvals FCC Class A CE EN55103 1 EN55103 2 UL UL1419 cUL C22 2 TUV EN60065 Environment Operating 15 to 35 C Storage 30 to 70 C Humidity 75 relative humidity max ...

Page 62: ... X Control Change OX 32 OX 48 55 OX 32 OX 48 55 Bank Change Program Change OX 1 127 OX 0 127 Bank Select O O System Exclusive Device ID Device Inquiry Device ID System Common Song Position Song Select Tune Request X X X X X X System Real Time Clock Commands X X X X Aux Messages Local ON OFF All Notes OFF Active Sensing System Reset X X X X X X X X Notes Mode 1 OMNI ON POLY Mode 2 OMNI ON MONO O Ye...

Page 63: ...57 ...

Page 64: ...up 8760 South Sandy Parkway Sandy Utah 84070 U S A Phone 801 568 7660 Fax 801 568 7662 PCM92 Questions or comments Visit us online at www lexiconpro com Copyright 2010 Lexicon Professional Printed in the USA 18 0688 B ...

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