Acoustic Echo Cancellation - Revision history

IVSWikiBlue: /* Tesira Software */

2022-05-10T18:31:22Z

‎Tesira Software

IVSWikiBlue: /* Physical Wiring/Line Diagram */

2022-05-10T18:29:54Z

‎Physical Wiring/Line Diagram

IVSWikiBlue: /* How to use the Mixer */

2022-02-07T20:55:13Z

‎How to use the Mixer

IVSWikiBlue at 16:04, 20 May 2020

2020-05-20T16:04:59Z

IVSWikiBlue: /* How the AEC Block Works */

2020-04-24T18:48:54Z

‎How the AEC Block Works

IVSWikiBlue: /* How the AEC Block Works */

2020-04-24T18:47:12Z

‎How the AEC Block Works

IVSWikiBlue at 18:46, 24 April 2020

2020-04-24T18:46:35Z

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.

@@ Line 17: / Line 17: @@
 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}}
@@ Line 24: / Line 24: @@
 ==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.
 #AEC: Enable the AEC feature with this button on the AEC Block.
 =How the AEC Block Works=

@@ Line 9: / Line 9: @@
 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=

@@ Line 42: / Line 42: @@
 ==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===

@@ Line 18: / Line 18: @@
 We will use the same software example config too, which looks like this:
-[[File:CRAS_Config_2.png]]
+[[File:CRAS_Config_2.png|link=]]
@@ Line 25: / Line 25: @@
 ==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.

@@ Line 34: / Line 34: @@
 #* 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.
+#* 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.
-#* 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.

← Older revision		Revision as of 18:46, 24 April 2020
Line 1:		Line 1:
−	~~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===