Merge pull request #790 from felicialim/ambix-ref

Update references for ACN and SN3D

index.bs

@@ -192,6 +192,12 @@ url: https://www.iso.org/standard/77752.html#; spec: MP4-PCM; type: dfn;
 		"publisher": "aomedia.org",
 		"href": "https://aomediacodec.github.io/av1-spec/av1-spec.pdf"
 	},
+	"ITU-2076-2": {
+		"title": "Audio Definition Model",
+		"status": "Standard",
+		"publisher": "ITU",
+		"href": "https://www.itu.int/dms_pubrec/itu-r/rec/bs/R-REC-BS.2076-2-201910-I!!PDF-E.pdf"
+	},
 	"ITU-2127-0": {
 		"title": "Audio Definition Model renderer for advanced sound systems",
 		"status": "Standard",
@@ -210,12 +216,6 @@ url: https://www.iso.org/standard/77752.html#; spec: MP4-PCM; type: dfn;
 		"publisher": "AES",
 		"href": "https://www.aes.org/e-lib/browse.cfm?elib=20446"
 	},
-	"AmbiX": {
-		"title": "AMBIX - A SUGGESTED AMBISONICS FORMAT",
-		"status": "Paper",
-		"publisher": "Ambisonics Symposium, June 2011",
-		"href": "https://iem.kug.ac.at/fileadmin/media/iem/projects/2011/ambisonics11_nachbar_zotter_sontacchi_deleflie.pdf"
-	},
 	"MP4-PCM": {
 		"title": "Information technology — MPEG audio technologies — Part 5: Uncompressed audio in MPEG-4 file format",
 		"status": "Standard",
@@ -1068,7 +1068,7 @@ The [=Channel Group=] format SHALL conform to the following rules:
 
 The <dfn noexport>AmbisonicsConfig()</dfn> class provides the configuration for a given Ambisonics representation. This section specifies the syntax structure of the [=AmbisonicsConfig()=] class.
 
-In this specification, the [[!AmbiX]] format is adopted, which uses Ambisonics Channel Number (ACN) channel ordering and normalizes the channels with Schmidt Semi-Normalization (SN3D).
+In this specification, the AmbiX format is adopted, which uses Ambisonics Channel Number (ACN) channel ordering and normalizes the channels with Schmidt Semi-Normalization (SN3D), both defined in [[!ITU-2076-2]].
 
 <b>Syntax</b>
 
@@ -2411,7 +2411,7 @@ If the EAR HOA renderer is used, the following metadata is provided to the rende
 2. Ambisonics degree
 3. Ambisonics normalization method
 
-The [[!AmbiX]] format uses SN3D normalization and ACN channel ordering. Accordingly, the Ambisonics order and degree can be computed from the channel index \(k\) as follows:
+The AmbiX format uses ACN channel ordering and SN3D normalization, defined in [[!ITU-2076-2]]. Accordingly, the Ambisonics order and degree can be computed from the channel index \(k\) as follows:
 
 \[
 \begin{aligned}[c]