Acoustic Echo Cancellation - Revision history

IVSWikiBlue: /* Tesira Software */

2022-05-10T18:31:22Z

Tesira Software

← Older revision		Revision as of 18:31, 10 May 2022
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	We will use the same software example config too, which looks like this:		We will use the same software example config too, which looks like this:

	~~[[File:~~CRAS_Config_2.png~~\|link=]]~~		{{img \| file = CRAS_Config_2.png}}


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	==AEC Block==		==AEC Block==

	~~[[File:~~CRAS_with_Input_Blocks.png~~\|link=]]~~		{{img \| file = CRAS_with_Input_Blocks.png}}

	#Phantom Power: We will need phantom power on for our mics, and proper levels on the preamps.		#Phantom Power: We will need phantom power on for our mics, and proper levels on the preamps.
	#AEC: Enable the AEC feature with this button on the AEC Block.		#AEC: Enable the AEC feature with this button on the AEC Block.


	=How the AEC Block Works=		=How the AEC Block Works=

IVSWikiBlue: /* Physical Wiring/Line Diagram */

2022-05-10T18:29:54Z

Physical Wiring/Line Diagram

← Older revision		Revision as of 18:29, 10 May 2022
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	We will use the CRAS example configuration. The physical wiring is as follows:		We will use the CRAS example configuration. The physical wiring is as follows:

	~~[[File:CRAS_Line_Diagram.png~~\|~~link~~=~~https://ipivs.com/wiki/images/2/2e/~~CRAS_Line_Diagram.png\|500px]]		{{img \| file = CRAS_Line_Diagram.png\| width=500px}}


	=Tesira Software=		=Tesira Software=

IVSWikiBlue: /* How to use the Mixer */

2022-02-07T20:55:13Z

How to use the Mixer

← Older revision		Revision as of 20:55, 7 February 2022
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	==How to use the Mixer==		==How to use the Mixer==

	There are 2 ways we can achieve our goal. They are functionally the same, but one may be conceptually easier to understand, and ~~therefor~~ configure correctly. We will look at them both here.		There are 2 ways we can achieve our goal. They are functionally the same, but one may be conceptually easier to understand, and therefore configure correctly. We will look at them both here.

	===Method 1===		===Method 1===

IVSWikiBlue at 16:04, 20 May 2020

2020-05-20T16:04:59Z

← Older revision		Revision as of 16:04, 20 May 2020
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	We will use the same software example config too, which looks like this:		We will use the same software example config too, which looks like this:

	[[File:CRAS_Config_2.png]]		[[File:CRAS_Config_2.png\|link=]]


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	==AEC Block==		==AEC Block==

	[[File:CRAS_with_Input_Blocks.png]]		[[File:CRAS_with_Input_Blocks.png\|link=]]

	#Phantom Power: We will need phantom power on for our mics, and proper levels on the preamps.		#Phantom Power: We will need phantom power on for our mics, and proper levels on the preamps.

IVSWikiBlue: /* How the AEC Block Works */

2020-04-24T18:48:54Z

How the AEC Block Works

← Older revision		Revision as of 18:48, 24 April 2020
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	#* Let's say John is in the Control Room, using the push to talk mic. We are sending his audio 2 places: the camera and the OWISP.		#* Let's say John is in the Control Room, using the push to talk mic. We are sending his audio 2 places: the camera and the OWISP.
	#* Steve is in the simulation room, responding in kind to John's instructions. Steve's audio is going 2 places also: the camera and the PSP speaker in the control room.		#* Steve is in the simulation room, responding in kind to John's instructions. Steve's audio is going 2 places also: the camera and the PSP speaker in the control room.
	#* John's OWISP audio will be captured by the room mic, and therefore sent back to the PSP speaker.		#* John's OWISP audio will be captured by the room mic, and therefore sent back to the PSP speaker in the control room, where the push to talk mic also lives.
	#* Steve's PSP audio will be captured by the push to talk mic, and therefore sent back to the sim room over the OWISP.		#* Steve's PSP audio will be captured by the push to talk mic, and therefore sent back to the sim room over the OWISP.
	#* The Tesira AEC Block will remove the unwanted audio coming into the mic inputs, as long as we tell it what to cancel.		#* The Tesira AEC Block will remove the unwanted audio coming into the mic inputs, as long as we tell it what to cancel. This is how we remove this feedback loop.
	#* We have to send the audio we need cancelled to the AEC Reference block.		#* We have to send the audio we need cancelled to the AEC Reference block.

IVSWikiBlue: /* How the AEC Block Works */

2020-04-24T18:47:12Z

How the AEC Block Works

← Older revision		Revision as of 18:47, 24 April 2020
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	=How the AEC Block Works=		=How the AEC Block Works=

	#* Let's say John is in the Control Room, using the push to talk mic. We are sending his audio 2 places: the camera and the OWISP.		#* Let's say John is in the Control Room, using the push to talk mic. We are sending his audio 2 places: the camera and the OWISP.
	#* Steve is in the simulation room, responding in kind to John's instructions. Steve's audio is going 2 places also: the camera and the PSP speaker in the control room.		#* Steve is in the simulation room, responding in kind to John's instructions. Steve's audio is going 2 places also: the camera and the PSP speaker in the control room.

IVSWikiBlue at 18:46, 24 April 2020

2020-04-24T18:46:35Z

← Older revision		Revision as of 18:46, 24 April 2020
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	~~Here~~ is ~~my section~~ on AEC.		=Description/Objective=
			In this section, we will be discussing Acoustic Echo Cancellation, or "AEC". Its purpose is to remove audio feedback in a control room solution, with 2 mics and 2 speakers.




			=Physical Wiring/Line Diagram=

			We will use the CRAS example configuration. The physical wiring is as follows:

			[[File:CRAS_Line_Diagram.png\|link=https://ipivs.com/wiki/images/2/2e/CRAS_Line_Diagram.png\|500px]]


			=Tesira Software=

			==Connections==

			We will use the same software example config too, which looks like this:

			[[File:CRAS_Config_2.png]]




			==AEC Block==

			[[File:CRAS_with_Input_Blocks.png]]

			#Phantom Power: We will need phantom power on for our mics, and proper levels on the preamps.
			#AEC: Enable the AEC feature with this button on the AEC Block.


			=How the AEC Block Works=

			#* Let's say John is in the Control Room, using the push to talk mic. We are sending his audio 2 places: the camera and the OWISP.
			#* Steve is in the simulation room, responding in kind to John's instructions. Steve's audio is going 2 places also: the camera and the PSP speaker in the control room.
			#* John's OWISP audio will be captured by the room mic, and therefore sent back to the PSP speaker.
			#* Steve's PSP audio will be captured by the push to talk mic, and therefore sent back to the sim room over the OWISP.
			#* The Tesira AEC Block will remove the unwanted audio coming into the mic inputs, as long as we tell it what to cancel.
			#* We have to send the audio we need cancelled to the AEC Reference block.


			==How to use the Mixer==

			There are 2 ways we can achieve our goal. They are functionally the same, but one may be conceptually easier to understand, and therefor configure correctly. We will look at them both here.

			===Method 1===




			===Method 2===

IVSWikiBlue: Created page with "Here is my section on AEC."

2020-04-24T18:24:15Z

Created page with "Here is my section on AEC."

New page

Here is my section on AEC.