XiphWiki - Recent changes [en]

User:Martin.leese

Martin.leese — Tue, 22 Sep 2026 03:29:56 GMT

Also, I apparentlychanged to file names to be camelCase.

Icecast Server/Listen Sockets

Gilou — Wed, 16 Sep 2026 19:49:06 GMT

X-Forwarded-For config using a virtual socket

← Older revision		Revision as of 19:49, 16 September 2026
(2 intermediate revisions by the same user not shown)
Line 52:		Line 52:
	\|-		\|-
	\|}		\|}

			== Example ==

			=== X-Forwarded-For config using a virtual socket ===
			Let's assume you have a reverse proxy (in case of a load balancer, or a TLS termination set which is not recommended for icecast). RP_IP is the IP of the reverse proxy, used to reach icecast.
			<pre>
			<!-- Reverse proxy connecting to icecast using its IP: RP_IP -->
			<listen-socket id="reverseproxy" type="virtual">
			<client-address>RP_IP</client-address>
			</listen-socket>
			<listen-socket>
			<port>8000</port>
			<!-- Enable trusting IP addresses sent using X-Forwarded-For header from this socket -->
			<trusted-proxy>#reverseproxy</trusted-proxy>
			</listen-socket>
			</pre>

Opus Recommended Settings

MrZeus — Wed, 16 Sep 2026 10:37:22 GMT

Mono or Stereo

← Older revision		Revision as of 10:37, 16 September 2026
(3 intermediate revisions by the same user not shown)
Line 65:		Line 65:
	== Mono or Stereo ==		== Mono or Stereo ==
	Opus tends to start '''downmixing stereo inputs to mono''' from roughly '''19 Kb/s and lower'''.		Opus tends to start '''downmixing stereo inputs to mono''' from roughly '''19 Kb/s and lower'''.
	You can check the details in the '''[https://github.com/xiph/opus/blob/~~master~~/src/opus_encoder.c#~~L149~~ opus_encoder.c]''' source file.		You can check the details in the '''[https://github.com/xiph/opus/blob/main/src/opus_encoder.c#L175 opus_encoder.c]''' source file.

	You can force downmixing at any bitrate by using the following command-line parameters:		You can force downmixing at any bitrate by using the following command-line parameters:
Line 91:		Line 91:
	\|-		\|-
	\|style="text-align:right;"\|NarrowBand (3 - 4000)		\|style="text-align:right;"\|NarrowBand (3 - 4000)
	\|12		\|6
	\|15		\|6
	\|?		\|6
	\|?		\|6
	\|-		\|-
	\|style="text-align:right;"\|MediumBand (3 - 6000)		\|style="text-align:right;"\|MediumBand (3 - 6000)
	\|15		\|9
	\|~~18-22~~		\|9
	\|?		\|9
	\|?		\|9
	\|-		\|-
	\|style="text-align:right;"\|WideBand (3 - 8000)		\|style="text-align:right;"\|WideBand (3 - 8000)
	\|~~16-20~~		\|10
	\|~~22-28~~		\|10
	\|?		\|10
	\|?		\|10
	\|-		\|-
	\|style="text-align:right;"\|SuperWideBand (3-12000)		\|style="text-align:right;"\|SuperWideBand (3-12000)
	\|~~24-28~~		\|14
	\|~~28-32~~		\|12
	\|?		\|14
	\|?		\|12
	\|-		\|-
	\|style="text-align:right;"\|FullBand (3-20000)		\|style="text-align:right;"\|FullBand (3-20000)
	\|~~28-40~~		\|16
	\|~~32-64~~		\|14
	\|~~32-64~~		\|16
	\|~~64-128~~		\|14
	\|}		\|}

	The details of Opus' bandpass thresholds can be found in the '''[https://github.com/xiph/opus/blob/~~master~~/src/opus_encoder.c#~~L121~~ opus_encoder.c]''' source file.		The details of Opus' bandpass thresholds can be found in the '''[https://github.com/xiph/opus/blob/main/src/opus_encoder.c#L151 opus_encoder.c]''' source file.

	The '''[http://wiki.hydrogenaud.io/index.php?title=Opus HydrogenAudio]''' wiki also has some great information on Opus and its usage.		The '''[http://wiki.hydrogenaud.io/index.php?title=Opus HydrogenAudio]''' wiki also has some great information on Opus and its usage.

← Older revision		Revision as of 03:29, 22 September 2026
(One intermediate revision by the same user not shown)
Line 2:		Line 2:

	For my e-mail address, please see		For my e-mail address, please see
	[http://~~members~~.~~tripod~~.com~~/martin_leese~~/ my website].		[http://martinleese.epizy.com/ my website].

	== Ambisonic credentials ==		== Ambisonic credentials ==

	I have joined this Wiki because it looks like you guys have an interest in Ambisonics. I can help with this. I have been following Ambisonics since 1977, and have owned an Ambisonic decoder (a Minim AD-7) since 1994. I also created and maintain the [http://~~members~~.~~tripod~~.com~~/martin_leese~~/Ambisonic/~~faq_latest~~.html Ambisonic Surround Sound FAQ], and was involved in defining the		I have joined this Wiki because it looks like you guys have an interest in Ambisonics. I can help with this. I have been following Ambisonics since 1977, and have owned an Ambisonic decoder (a Minim AD-7) since 1994. I also created and maintain the [http://martinleese.epizy.com/Ambisonic/faqLatest.html Ambisonic Surround Sound FAQ], and was involved in defining the
	[http://~~members~~.~~tripod~~.com~~/martin_leese~~/Ambisonic/B-~~Format_file_format~~.html ".amb"] and [http://~~members~~.~~tripod~~.com~~/martin_leese~~/Ambisonic/~~UHJ_file_format~~.html ".uhj"] specifications for dowloadable B-Format and two-channel UHJ files. Finally, I have		[http://martinleese.epizy.com/Ambisonic/B-FormatFileFormat.html ".amb"] and [http://martinleese.epizy.com/Ambisonic/UHJFileFormat.html ".uhj"] specifications for dowloadable B-Format and two-channel UHJ files. Finally, I have
	proposed the [http://~~members~~.~~tripod~~.com~~/martin_leese~~/Ambisonic/G-~~Format_chunk~~.html ".amg"] file format for downloadable G-Format files. However, I do not work in pro-audio; I am just a domestic listener.		proposed the [http://martinleese.epizy.com/Ambisonic/G-FormatChunk.html ".amg"] file format for downloadable G-Format files. However, I do not work in pro-audio; I am just a domestic listener.

	== [[Ambisonics]] on Xiph Wiki ==		== [[Ambisonics]] on Xiph Wiki ==
Line 17:		Line 17:

	* There is now a set of [http://en.wikipedia.org/wiki/Ambisonics Wikipedia articles on Ambisonics].		* There is now a set of [http://en.wikipedia.org/wiki/Ambisonics Wikipedia articles on Ambisonics].
	* Of particular relevance is the [http://~~members~~.~~tripod~~.com~~/martin_leese~~/Ambisonic/B-~~Format_file_format~~.html ".amb" specification] for downloadable B-Format files~~. There are currently over 200 pieces available in this format [http://www.ambisonia.com for free download]. Most of these are first-order full-sphere soundfields~~. The ".amb" spec has some limitations which it would be useful to overcome.		* Of particular relevance is the [http://martinleese.epizy.com/Ambisonic/B-FormatFileFormat.html ".amb" specification] for downloadable B-Format files. The ".amb" spec has some limitations which it would be useful to overcome.
	* There is also the [http://~~members~~.~~tripod~~.com~~/martin_leese~~/Ambisonic/~~UHJ_file_format~~.html ".uhj" specification] for downloadable two-channel UHJ files, although it is not currently in use. The ".uhj" spec also has some limitations which it would be useful to overcome.		* There is also the [http://martinleese.epizy.com/Ambisonic/UHJFileFormat.html ".uhj" specification] for downloadable two-channel UHJ files, although it is not currently in use. The ".uhj" spec also has some limitations which it would be useful to overcome.
	* I have proposed a [http://~~members~~.~~tripod~~.com~~/martin_leese~~/Ambisonic/G-~~Format_chunk~~.html ".amg" specification] for downloadable G-Format files.		* I have proposed a [http://martinleese.epizy.com/Ambisonic/G-FormatChunk.html ".amg" specification] for downloadable G-Format files.
	* [http://~~members~~.~~tripod~~.com~~/martin_leese/Ambisonic~~/ My website] has many pages on Ambisonics (including at the bottom links to other Ambisonic websites).		* [http://martinleese.epizy.com/ My website] has many pages on Ambisonics (including at the bottom links to other Ambisonic websites).

	== Useful links (really here for my benefit) ==		== Useful links (really here for my benefit) ==