Rob Hordijk OSC HRM: Difference between revisions
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dynamic timbral and volume control that can do e.g. a pretty solid bass line |
dynamic timbral and volume control that can do e.g. a pretty solid bass line |
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<b>Dual Phaser </b><br> |
<b>Dual Phaser </b><br> |
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Price: 385 Euro.<br> |
Price: 385 Euro.<br> |
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The internal CV voltage scale is 1V/Oct. Each phaser has a reasonably accurate one volt per octave direct control input that can track the keyboard voltage. Normalization is used, routing the V/Oct input signal of phaser1 into phaser2 when the phaser2 V/Oct input is left unplugged. |
The internal CV voltage scale is 1V/Oct. Each phaser has a reasonably accurate one volt per octave direct control input that can track the keyboard voltage. Normalization is used, routing the V/Oct input signal of phaser1 into phaser2 when the phaser2 V/Oct input is left unplugged. |
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<b>Active Matrix</b><br> |
<b>Active Matrix</b><br> |
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Price |
Price 295 euro<br> |
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The Active Matrix module |
The Active Matrix module is a fully buffered eight by eight matrix where any one of eight |
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input signals can be added to any one of eight outputs. By using ¼-inch tip-ring-sleeve insert |
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It comes with mono plugs and some have built-in resistors for -6db or -12db signal reduction. |
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jacks for the matrix nodes (equal to stereo jacks) a whole range of applications become |
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Every point is an insert, and with an insert cable, you can patch whatever you like into that point. |
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possible. First the column input signal is buffered and then routed to the tips of the nodes in |
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that column. The ring signals of the nodes are basically summing inputs and summed to the |
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final output signals at the ends of the rows. By connecting a stereo jack where the tip and the |
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ring are connected directly together, a connection with unity gain is made from a column |
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input to a row output. If the tip-ring connection in the jack goes through a resistor an |
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additional attenuation can be accomplished. E.g. a 30k resistor will attenuate by 6dB and a |
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91k resistor by 12dB. |
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When a stereo audio cable is soldered to a jack plug and on the other side of the cable a |
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potentiometer is attached the potentiometer will act like a pot on the node, enabling to set the |
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mix level by the pot. Basically each node is an insert, just like the inserts on a mixing desk. |
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And can thus be used in the same way. So, using a jack with a pot means to ‘insert’ the pot |
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into the signal path. This means that you can insert any other outside world device in the |
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signal path by using an insert cable with a stereo jack on one side and two mono jacks on the |
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other, provided signal levels match of course (e.g. 5V pp oscillator output signals will |
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severely overload line level inputs on e.g. a digital effects rack or the guitar input of a |
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stompbox). One could also connect a resistive sensor like a light dependent resistor (LDR) to |
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a jack and make the node light sensitive. |
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Each column also acts like a multiple. When a mono jack is connected into a node it will pick |
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up the column input signal from the tip. But the ring input is now short circuited to the ground |
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through the sleeve of the mono jack and will so disable any input from this particular node to |
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the row output. This will not interfere with any other nodes in the same column or row, |
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because of the full buffering of both the column inputs and row outputs. So, any node that is |
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not used to route a signal to a row output can be used as a multiple output. Meaning that the |
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matrix is also eight multiples with one buffered input and eight buffered outputs on each |
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multiple. |
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Matrices with bigger sizes can be built on demand. Input columns come in multiples of eight |
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and any number of output rows are possible. |
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