Coefficients/Potentiometers - Revision history

Marco-Guerini: Added an example

2024-12-30T14:54:06Z

Added an example

← Older revision		Revision as of 14:54, 30 December 2024
Line 1:		Line 1:
	'''Coefficients''' are quantitative parameters ~~that enter~~ analog computations. [[The Analog Thing]] features eight coefficient potentiometers, allowing the use of up to eight coefficients in an analog program on a single THAT. Using the potentiometers, each coefficient can be set to any value between <code>0</code> and <code>+1</code>. An input to a coefficient potentiometer is multiplied by the value the coefficient potentiometer is set to such that their output is given by <code>output = coefficient * input</code>.		'''Coefficients''' are the quantitative parameters of analog computations. [[The Analog Thing]] features eight coefficient potentiometers, allowing the use of up to eight coefficients in an analog program on a single THAT.
			Using the potentiometers, each coefficient can be set to any value between <code>0</code> and <code>1</code>. An input to a coefficient potentiometer is multiplied by the value the coefficient potentiometer is set, such that their output is given by <code>output = coefficient * input</code>, with the coefficient being a value between 0 and 1 as said before.

			For example a variable A is patched into a potentiometer set to 0.123. The output of the potentiometer would be A*0.123, with the same sign as A. No sign reversal is possible with "normal" potentiometer, though tricks have been developed to allow such a thing.

	Several sections of the THAT user interface relate to the use of coefficient potentiometers, as shown in Figure 1:		Several sections of the THAT user interface relate to the use of coefficient potentiometers, as shown in Figure 1:

Tfischer at 04:20, 30 August 2021

2021-08-30T04:20:26Z

← Older revision		Revision as of 04:20, 30 August 2021
Line 1:		Line 1:
	'''Coefficients''' are quantitative parameters that enter analog computations ~~in a multiplicative fashion~~. [[The Analog Thing]] features eight coefficient potentiometers, allowing the use of up to eight coefficients in an analog ~~computation~~. Using the potentiometers, each coefficient can be set to any value between <code>0</code> and <code>+1</code>. An input to a coefficient potentiometer is multiplied by the value the coefficient potentiometer is set to such that their output is given by <code>output = coefficient * input</code>.		'''Coefficients''' are quantitative parameters that enter analog computations. [[The Analog Thing]] features eight coefficient potentiometers, allowing the use of up to eight coefficients in an analog program on a single THAT. Using the potentiometers, each coefficient can be set to any value between <code>0</code> and <code>+1</code>. An input to a coefficient potentiometer is multiplied by the value the coefficient potentiometer is set to such that their output is given by <code>output = coefficient * input</code>.

	Several sections of the THAT user interface relate to the use of coefficient potentiometers, as shown in Figure 1:		Several sections of the THAT user interface relate to the use of coefficient potentiometers, as shown in Figure 1:

Tfischer at 15:49, 8 August 2021

2021-08-08T15:49:00Z

← Older revision		Revision as of 15:49, 8 August 2021
Line 4:		Line 4:

	* The <code>COEFFICIENTS</code> section. This is the area labelled <code>COEFF</code> on your THAT. It contains the input and output sockets for the coefficient potentiometers.		* The <code>COEFFICIENTS</code> section. This is the area labelled <code>COEFF</code> on your THAT. It contains the input and output sockets for the coefficient potentiometers.
	* The <code>COEFFICIENT POTENTIOMETERS</code> section.		* The <code>COEFFICIENT POTENTIOMETERS</code> section. It contains the eight rotary knobs by which coefficients can be set.
	* The <code>MODE SELECTOR</code>.		* The <code>MODE SELECTOR</code>.
	* The <code>COEFFICIENT SELECTOR</code>.		* The <code>COEFFICIENT SELECTOR</code>. It is used to select the coefficient value to display on the <code>PANEL METER</code> when the <code>MODE SELECTOR</code> is in the <code>COEFF</code> position.
	* The <code>PANEL METER</code>.		* The <code>PANEL METER</code>.

Tfischer at 15:45, 8 August 2021

2021-08-08T15:45:42Z

← Older revision		Revision as of 15:45, 8 August 2021
Line 3:		Line 3:
	Several sections of the THAT user interface relate to the use of coefficient potentiometers, as shown in Figure 1:		Several sections of the THAT user interface relate to the use of coefficient potentiometers, as shown in Figure 1:

	* The <code>COEFFICIENTS</code> section. This is the area labelled <code>COEFF</code> on your THAT. It contains the ~~inputs~~ and output sockets for the coefficient potentiometers.		* The <code>COEFFICIENTS</code> section. This is the area labelled <code>COEFF</code> on your THAT. It contains the input and output sockets for the coefficient potentiometers.
	* The <code>COEFFICIENT POTENTIOMETERS</code> section.		* The <code>COEFFICIENT POTENTIOMETERS</code> section.
	* The <code>MODE SELECTOR</code>.		* The <code>MODE SELECTOR</code>.

Tfischer at 15:43, 8 August 2021

2021-08-08T15:43:22Z

← Older revision		Revision as of 15:43, 8 August 2021
Line 12:		Line 12:

	# Set the <code>MODE SELECTOR</code> to position <code>COEFF</code> and set the <code>COEFFICIENT SELECTOR</code> to position <code>1</code>. This connects the output of potentiometer <code>COEFF 1</code> to the <code>PANEL METER</code>.		# Set the <code>MODE SELECTOR</code> to position <code>COEFF</code> and set the <code>COEFFICIENT SELECTOR</code> to position <code>1</code>. This connects the output of potentiometer <code>COEFF 1</code> to the <code>PANEL METER</code>.
	# Use a patch cable to connect one of the <code>+1</code> ~~jacks~~ in the <code> STABILIZED ±1</code> section to the input (circle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENTS</code> section (i.e., the uppermost circled ~~jack~~ in the section labelled <code>COEFF</code> on your THAT).		# Use a patch cable to connect one of the <code>+1</code> sockets in the <code> STABILIZED ±1</code> section to the input (circle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENTS</code> section (i.e., the uppermost circled socket in the section labelled <code>COEFF</code> on your THAT).
	# Change the position of the <code>COEFF 1</code> knob in the <code>COEFFICIENT POTENTIOMETERS</code> section and observe the value displayed on the <code>PANEL METER</code>. The displayed value is available at the output (triangle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENT</code> section.		# Change the position of the <code>COEFF 1</code> knob in the <code>COEFFICIENT POTENTIOMETERS</code> section and observe the value displayed on the <code>PANEL METER</code>. The displayed value is available at the output (triangle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENT</code> section.
	# Remove the patch cable plug from the <code>+1</code> ~~jack~~ in the <code> STABILIZED ±1</code> section and plug it into one of the <code>-1</code> ~~jacks~~ in in the <code> STABILIZED ±1</code>.		# Remove the patch cable plug from the <code>+1</code> socket in the <code> STABILIZED ±1</code> section and plug it into one of the <code>-1</code> sockets in in the <code> STABILIZED ±1</code>.
	# Again, change the position of the <code>COEFF 1</code> knob in the potentiometer section and observe the value displayed on the <code>PANEL METER</code>.		# Again, change the position of the <code>COEFF 1</code> knob in the potentiometer section and observe the value displayed on the <code>PANEL METER</code>.
	# Set the <code>COEFFICIENT SELECTOR</code> to any one of the other potentiometers (say, 4).		# Set the <code>COEFFICIENT SELECTOR</code> to any one of the other potentiometers (say, 4).
	# Use a patch cable to connect either of the <code>-1</code> ~~jacks~~ in the <code> STABILIZED ±1</code> with the input (circle) associated with the with the coefficient potentiometer you have chosen using the <code>COEFFICIENT SELECTOR</code> (say, 4).		# Use a patch cable to connect either of the <code>-1</code> sockets in the <code> STABILIZED ±1</code> with the input (circle) associated with the with the coefficient potentiometer you have chosen using the <code>COEFFICIENT SELECTOR</code> (say, 4).
	# Change the position of the coefficient potentiometer knob associated with the coefficient you have chosen using the <code>COEFFICIENT SELECTOR</code> (say, 4) and again observe the value displayed on the <code>PANEL METER</code>.		# Change the position of the coefficient potentiometer knob associated with the coefficient you have chosen using the <code>COEFFICIENT SELECTOR</code> (say, 4) and again observe the value displayed on the <code>PANEL METER</code>.

Tfischer at 13:22, 8 August 2021

2021-08-08T13:22:56Z

← Older revision		Revision as of 13:22, 8 August 2021
Line 11:		Line 11:
	To familiarize yourself with the use of coefficient potentiometers, follow these steps:		To familiarize yourself with the use of coefficient potentiometers, follow these steps:

	# Set the <code>MODE</code> ~~selector~~ to position <code>COEFF</code> and set the <code>COEFFICIENT</code> ~~selector~~ to position <code>1</code>. This connects the output of potentiometer <code>COEFF 1</code> to the <code>PANEL METER</code>.		# Set the <code>MODE SELECTOR</code> to position <code>COEFF</code> and set the <code>COEFFICIENT SELECTOR</code> to position <code>1</code>. This connects the output of potentiometer <code>COEFF 1</code> to the <code>PANEL METER</code>.
	# Use a patch cable to connect one of the <code>+1</code> jacks in the <code> STABILIZED ±1</code> section to the input (circle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENTS</code> section (i.e., the uppermost circled jack in the section labelled <code>COEFF</code> on your THAT).		# Use a patch cable to connect one of the <code>+1</code> jacks in the <code> STABILIZED ±1</code> section to the input (circle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENTS</code> section (i.e., the uppermost circled jack in the section labelled <code>COEFF</code> on your THAT).
	# Change the position of the <code>COEFF 1</code> knob in the <code>COEFFICIENT POTENTIOMETERS</code> section and observe the value displayed on the <code>PANEL METER</code>. The displayed value is available at the output (triangle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENT</code> section.		# Change the position of the <code>COEFF 1</code> knob in the <code>COEFFICIENT POTENTIOMETERS</code> section and observe the value displayed on the <code>PANEL METER</code>. The displayed value is available at the output (triangle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENT</code> section.
	# Remove the patch cable plug from the <code>+1</code> jack in the <code> STABILIZED ±1</code> section and plug it into one of the <code>-1</code> jacks in in the <code> STABILIZED ±1</code>.		# Remove the patch cable plug from the <code>+1</code> jack in the <code> STABILIZED ±1</code> section and plug it into one of the <code>-1</code> jacks in in the <code> STABILIZED ±1</code>.
	# Again, change the position of the <code>COEFF 1</code> knob in the potentiometer section and observe the value displayed on the <code>PANEL METER</code>.		# Again, change the position of the <code>COEFF 1</code> knob in the potentiometer section and observe the value displayed on the <code>PANEL METER</code>.
	# Set the <code>COEFFICIENT</code> ~~selector~~ to any one of the other potentiometers (say, 4).		# Set the <code>COEFFICIENT SELECTOR</code> to any one of the other potentiometers (say, 4).
	# Use a patch cable to connect either of the <code>-1</code> jacks in the <code> STABILIZED ±1</code> with the input (circle) associated with the with the coefficient potentiometer you have chosen using the <code>COEFFICIENT</code> ~~selector~~ (say, 4).		# Use a patch cable to connect either of the <code>-1</code> jacks in the <code> STABILIZED ±1</code> with the input (circle) associated with the with the coefficient potentiometer you have chosen using the <code>COEFFICIENT SELECTOR</code> (say, 4).
	# Change the position of the coefficient potentiometer knob associated with the coefficient you have chosen using the <code>COEFFICIENT</code> ~~selector~~ (say, 4) and again observe the value displayed on the <code>PANEL METER</code>.		# Change the position of the coefficient potentiometer knob associated with the coefficient you have chosen using the <code>COEFFICIENT SELECTOR</code> (say, 4) and again observe the value displayed on the <code>PANEL METER</code>.

	[[File:THAT_legend_potentiometers_s.png\|thumb\|left\|800px\|Figure 1: Parts of the THAT user interface that relate to the familiarization steps described above]]		[[File:THAT_legend_potentiometers_s.png\|thumb\|left\|800px\|Figure 1: Parts of the THAT user interface that relate to the familiarization steps described above]]

	[[Category:Components of The Analog Thing]]		[[Category:Components of The Analog Thing]]

Tfischer at 13:21, 8 August 2021

2021-08-08T13:21:08Z

← Older revision		Revision as of 13:21, 8 August 2021
Line 5:		Line 5:
	* The <code>COEFFICIENTS</code> section. This is the area labelled <code>COEFF</code> on your THAT. It contains the inputs and output sockets for the coefficient potentiometers.		* The <code>COEFFICIENTS</code> section. This is the area labelled <code>COEFF</code> on your THAT. It contains the inputs and output sockets for the coefficient potentiometers.
	* The <code>COEFFICIENT POTENTIOMETERS</code> section.		* The <code>COEFFICIENT POTENTIOMETERS</code> section.
	* The <code>MODE</code> ~~selector~~.		* The <code>MODE SELECTOR</code>.
	* The <code>COEFFICIENT</code> ~~selector~~.		* The <code>COEFFICIENT SELECTOR</code>.
	* The <code>PANEL METER</code>.		* The <code>PANEL METER</code>.

Tfischer at 13:20, 8 August 2021

2021-08-08T13:20:13Z

Tfischer at 09:21, 7 August 2021

2021-08-07T09:21:57Z

← Older revision		Revision as of 09:21, 7 August 2021
Line 1:		Line 1:
	'''Coefficients''' are quantitative parameters that enter analog computations in a multiplicative fashion. [[The Analog Thing]] features eight coefficient potentiometers, allowing the use of up to eight coefficients in an analog computation. Using the potentiometers, each coefficient can be set to any value between <code>0</code> and <code>+1</code>. An input to a coefficient potentiometer is multiplied by the value the coefficient potentiometer is set to such that their output is given by <code>output = coefficient * input</code>.		'''Coefficients''' are quantitative parameters that enter analog computations in a multiplicative fashion. [[The Analog Thing]] features eight coefficient potentiometers, allowing the use of up to eight coefficients in an analog computation. Using the potentiometers, each coefficient can be set to any value between <code>0</code> and <code>+1</code>. An input to a coefficient potentiometer is multiplied by the value the coefficient potentiometer is set to such that their output is given by <code>output = coefficient * input</code>.

	~~Five~~ sections of the THAT user interface relate to the use of coefficient potentiometers, as shown in Figure 1:		Several sections of the THAT user interface relate to the use of coefficient potentiometers, as shown in Figure 1:

	* the <code>COEFF</code> ~~section: these are~~ inputs and output sockets		* The <code>COEFFICIENTS</code> section. This is the area labelled <code>COEFF</code> on your THAT. It contains the inputs and output sockets for the coefficient potentiometers.
	* ~~the~~ <code>COEFFICIENT POTENTIOMETERS</code> section		* The <code>COEFFICIENT POTENTIOMETERS</code> section.
	* ~~the~~ <code>MODE</code> selector		* The <code>MODE</code> selector.
	* ~~the~~ <code>COEFFICIENT</code> selector		* The <code>COEFFICIENT</code> selector.
	* ~~the~~ digital voltmeter		* The digital voltmeter.

	To familiarize yourself with the use of coefficient potentiometers, follow these steps:		To familiarize yourself with the use of coefficient potentiometers, follow these steps:

Tfischer at 09:14, 7 August 2021

2021-08-07T09:14:55Z

← Older revision		Revision as of 09:14, 7 August 2021
Line 4:		Line 4:

	* the <code>COEFF</code> section: these are inputs and output sockets		* the <code>COEFF</code> section: these are inputs and output sockets
	* the ~~potentiometer~~ section		* the <code>COEFFICIENT POTENTIOMETERS</code> section
	* the <code>MODE</code> selector		* the <code>MODE</code> selector
	* the <code>COEFFICIENT</code> selector		* the <code>COEFFICIENT</code> selector

← Older revision		Revision as of 13:20, 8 August 2021
Line 7:		Line 7:
	* The <code>MODE</code> selector.		* The <code>MODE</code> selector.
	* The <code>COEFFICIENT</code> selector.		* The <code>COEFFICIENT</code> selector.
	* The ~~digital voltmeter~~.		* The <code>PANEL METER</code>.

	To familiarize yourself with the use of coefficient potentiometers, follow these steps:		To familiarize yourself with the use of coefficient potentiometers, follow these steps:

	# Set the <code>MODE</code> selector to position <code>COEFF</code> and set the <code>COEFFICIENT</code> selector to position <code>1</code>. This connects the output of potentiometer <code>COEFF 1</code> to the ~~digital voltmeter~~.		# Set the <code>MODE</code> selector to position <code>COEFF</code> and set the <code>COEFFICIENT</code> selector to position <code>1</code>. This connects the output of potentiometer <code>COEFF 1</code> to the <code>PANEL METER</code>.
	# Use a patch cable to connect one of the <code>+1</code> jacks in the <code> STABILIZED ±1</code> section to the input (circle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENTS</code> section (i.e., the uppermost circled jack in the section labelled <code>COEFF</code> on your THAT).		# Use a patch cable to connect one of the <code>+1</code> jacks in the <code> STABILIZED ±1</code> section to the input (circle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENTS</code> section (i.e., the uppermost circled jack in the section labelled <code>COEFF</code> on your THAT).
	# Change the position of the <code>COEFF 1</code> knob in the <code>COEFFICIENT POTENTIOMETERS</code> section and observe the value displayed on the ~~digital voltmeter~~. The displayed value is available at the output (triangle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENT</code> section.		# Change the position of the <code>COEFF 1</code> knob in the <code>COEFFICIENT POTENTIOMETERS</code> section and observe the value displayed on the <code>PANEL METER</code>. The displayed value is available at the output (triangle) associated with potentiometer <code>COEFF 1</code> in the <code>COEFFICIENT</code> section.
	# Remove the patch cable plug from the <code>+1</code> jack in the <code> STABILIZED ±1</code> section and plug it into one of the <code>-1</code> jacks in in the <code> STABILIZED ±1</code>.		# Remove the patch cable plug from the <code>+1</code> jack in the <code> STABILIZED ±1</code> section and plug it into one of the <code>-1</code> jacks in in the <code> STABILIZED ±1</code>.
	# Again, change the position of the <code>COEFF 1</code> knob in the potentiometer section and observe the value displayed on the ~~digital voltmeter~~.		# Again, change the position of the <code>COEFF 1</code> knob in the potentiometer section and observe the value displayed on the <code>PANEL METER</code>.
	# Set the <code>COEFFICIENT</code> selector to any one of the other potentiometers (say, 4).		# Set the <code>COEFFICIENT</code> selector to any one of the other potentiometers (say, 4).
	# Use a patch cable to connect either of the <code>-1</code> jacks in the <code> STABILIZED ±1</code> with the input (circle) associated with the with the coefficient potentiometer you have chosen using the <code>COEFFICIENT</code> selector (say, 4).		# Use a patch cable to connect either of the <code>-1</code> jacks in the <code> STABILIZED ±1</code> with the input (circle) associated with the with the coefficient potentiometer you have chosen using the <code>COEFFICIENT</code> selector (say, 4).
	# Change the position of the coefficient potentiometer knob associated with the coefficient you have chosen using the <code>COEFFICIENT</code> selector (say, 4) and again observe the value displayed on the ~~digital voltmeter~~.		# Change the position of the coefficient potentiometer knob associated with the coefficient you have chosen using the <code>COEFFICIENT</code> selector (say, 4) and again observe the value displayed on the <code>PANEL METER</code>.

	[[File:THAT_legend_potentiometers_s.png\|thumb\|left\|800px\|Figure 1: Parts of the THAT user interface that relate to the familiarization steps described above]]		[[File:THAT_legend_potentiometers_s.png\|thumb\|left\|800px\|Figure 1: Parts of the THAT user interface that relate to the familiarization steps described above]]

	[[Category:Components of The Analog Thing]]		[[Category:Components of The Analog Thing]]