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Primary Functions:
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Multi-processing Boolean Gate (AND/XOR Function) • Logic Inverter • Offset Voltage Inverter (Mirror)• Rise/Fall Slew Generator • A/R Envelope Generator
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The M26 is one of two Swiss Army Knife processors which are scheduled for release in the Spring of 2007. Along with it's counterpart, the Model 25 audio processor, the Model 26 Multi-tasking CV Processor was designed to provide the user with a bank of basic control functions without the need for various single-tasked modules to do so.
The functionality of the M26 is broken down into three sections:
1) Boolean Gates
The M26's top section is equipped with a series of three basic boolean logic functions - AND, XOR and INVERT.
The top section of the Boolean Gates provide simultaneous AND and EXCLUSIVE OR Gate functions of the A and B inputs. The bottom section of the Boolean functions returns the inverted logic state as provided at the input. Truth tables for the three gates are as follows:
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A Input state:
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B Input state:
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Output state:
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AND Gate output:
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Exclusive OR (XOR) Gate output:
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INVERT Gate output:
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All three inputs of the Boolean Gates are run through internal comparators so that both AC or steady state DC voltage signals may be applied without erroneous logic interpretation error. Although any type of signal may be input, output states are binary: only high (+8) or low (Ground) signals are returned. LEDs indicate the current output states of the AND and XOR functions
By routing the output of the AND or XOR gates through the INVERT gate, the reciprical logic function of each may be obtained: AND becomes NAND, XOR becomes XNOR.
2) Voltage Mirror
The center section of the M26 provides a unique type of voltage inverter Plan B refers as a Voltage Mirror - a variant of the standard voltage inverter which offsets the input positively as shown in fig. 1. In so doing, the Voltage Mirror returns a mirror image of it's input.
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Figure 1 - Voltage Mirror output attributes
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The Voltage Mirror can process both DC and AC signals.
3) Rise/Fall Slew Limiter
The bottom section of the M26 is a standard two phase (rise/fall) Slew Limiter, sometimes referred to as a portemento. A switch provides for two scales of the controls - Standard mode, suited for use with an equal tempered keyboard and x10 mode which brings the possible slew times to ridiculously high levels. The x10 mode is such that it's generally too slow for keyboard riffs as most of the movement will be lost in the slew's fog, yet is perfect for processing slower events not associated with keyboard applications.
The M26's Slew Limiter is retriggerable and can be used as a simple Attack/Release envelope generator. An LED has been fitted to show the current output level (state of slewing) Although the M26 Slew can process signals which are above and below ground (AC), the LED can only indicate voltage above (ground to +12 will light the lamp).
The M26 is due for release in the Spring of 2007. Preliminary price is $185 USD. The Model 26 is 10HP wide.
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