Sierra DPCM - Revision history

Multimedia Mike: one more format that can contain this audio type

2020-02-14T06:22:03Z

one more format that can contain this audio type

← Older revision		Revision as of 23:22, 13 February 2020
Line 1:		Line 1:
	* Company: [[Sierra Entertainment]]		* Company: [[Sierra Entertainment]]

	This is a set of DPCM codecs used in [[Sierra Audio]] and [[~~VMD~~]].		This is a set of DPCM codecs used in [[Sierra Audio]], [[VMD]], and [[RBT]] files.

	=== Old DPCM ===		=== Old DPCM ===

Multimedia Mike: revert spam/vandalism

2006-03-24T18:25:52Z

revert spam/vandalism

Show changes

62.116.40.112: "

2006-03-24T09:16:53Z

← Older revision		Revision as of 02:16, 24 March 2006
Line 2:		Line 2:

	This is a set of DPCM codecs used in [[Sierra Audio]] and [[VMD]].		This is a set of DPCM codecs used in [[Sierra Audio]] and [[VMD]].

			=== Old DPCM ===
			Decoding of DPCM is very simple: read nibble, get corresponding delta value from table and update current sample value.

			Delta table:

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-21,-15,-10, -6, -3, -2, -1, -0}

			=== New DPCM ===
			New scheme differs from old one by delta table (note the order of its second part):

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-0, -1, -2, -3, -6, -10, -15, -21}

			=== 16-bit DPCM ===
			TODO

			[[Category:Audio Codecs]]
			[[Category:DPCM Audio Codecs]]
			[[Category:Game Formats]]




			=== Old DPCM ===
			Decoding of DPCM is very simple: read nibble, get corresponding delta value from table and update current sample value.

			Delta table:

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-21,-15,-10, -6, -3, -2, -1, -0}

			=== New DPCM ===
			New scheme differs from old one by delta table (note the order of its second part):

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-0, -1, -2, -3, -6, -10, -15, -21}

			=== 16-bit DPCM ===
			TODO

			[[Category:Audio Codecs]]
			[[Category:DPCM Audio Codecs]]
			[[Category:Game Formats]]




			=== Old DPCM ===
			Decoding of DPCM is very simple: read nibble, get corresponding delta value from table and update current sample value.

			Delta table:

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-21,-15,-10, -6, -3, -2, -1, -0}

			=== New DPCM ===
			New scheme differs from old one by delta table (note the order of its second part):

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-0, -1, -2, -3, -6, -10, -15, -21}

			=== 16-bit DPCM ===
			TODO

			[[Category:Audio Codecs]]
			[[Category:DPCM Audio Codecs]]
			[[Category:Game Formats]]




			=== Old DPCM ===
			Decoding of DPCM is very simple: read nibble, get corresponding delta value from table and update current sample value.

			Delta table:

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-21,-15,-10, -6, -3, -2, -1, -0}

			=== New DPCM ===
			New scheme differs from old one by delta table (note the order of its second part):

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-0, -1, -2, -3, -6, -10, -15, -21}

			=== 16-bit DPCM ===
			TODO

			[[Category:Audio Codecs]]
			[[Category:DPCM Audio Codecs]]
			[[Category:Game Formats]]


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	=== Old DPCM ===		=== Old DPCM ===

129.22.63.191: "

2006-03-24T08:00:20Z

← Older revision		Revision as of 01:00, 24 March 2006
Line 2:		Line 2:

	This is a set of DPCM codecs used in [[Sierra Audio]] and [[VMD]].		This is a set of DPCM codecs used in [[Sierra Audio]] and [[VMD]].

			=== Old DPCM ===
			Decoding of DPCM is very simple: read nibble, get corresponding delta value from table and update current sample value.

			Delta table:

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-21,-15,-10, -6, -3, -2, -1, -0}

			=== New DPCM ===
			New scheme differs from old one by delta table (note the order of its second part):

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-0, -1, -2, -3, -6, -10, -15, -21}

			=== 16-bit DPCM ===
			TODO

			[[Category:Audio Codecs]]
			[[Category:DPCM Audio Codecs]]
			[[Category:Game Formats]]




			=== Old DPCM ===
			Decoding of DPCM is very simple: read nibble, get corresponding delta value from table and update current sample value.

			Delta table:

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-21,-15,-10, -6, -3, -2, -1, -0}

			=== New DPCM ===
			New scheme differs from old one by delta table (note the order of its second part):

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-0, -1, -2, -3, -6, -10, -15, -21}

			=== 16-bit DPCM ===
			TODO

			[[Category:Audio Codecs]]
			[[Category:DPCM Audio Codecs]]
			[[Category:Game Formats]]


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	=== Old DPCM ===		=== Old DPCM ===

194.250.151.179: "

2006-03-24T04:24:34Z

← Older revision		Revision as of 21:24, 23 March 2006
Line 2:		Line 2:

	This is a set of DPCM codecs used in [[Sierra Audio]] and [[VMD]].		This is a set of DPCM codecs used in [[Sierra Audio]] and [[VMD]].

			=== Old DPCM ===
			Decoding of DPCM is very simple: read nibble, get corresponding delta value from table and update current sample value.

			Delta table:

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-21,-15,-10, -6, -3, -2, -1, -0}

			=== New DPCM ===
			New scheme differs from old one by delta table (note the order of its second part):

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-0, -1, -2, -3, -6, -10, -15, -21}

			=== 16-bit DPCM ===
			TODO

			[[Category:Audio Codecs]]
			[[Category:DPCM Audio Codecs]]
			[[Category:Game Formats]]


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	=== Old DPCM ===		=== Old DPCM ===

Multimedia Mike: as well as a DPCM codec

2006-02-19T16:42:06Z

as well as a DPCM codec

← Older revision		Revision as of 09:42, 19 February 2006
Line 21:		Line 21:

	[[Category:Audio Codecs]]		[[Category:Audio Codecs]]
			[[Category:DPCM Audio Codecs]]
	[[Category:Game Formats]]		[[Category:Game Formats]]

Multimedia Mike: also an audio codec

2006-02-19T16:41:17Z

also an audio codec

← Older revision		Revision as of 09:41, 19 February 2006
Line 20:		Line 20:
	TODO		TODO

			[[Category:Audio Codecs]]
	[[Category:Game Formats]]		[[Category:Game Formats]]

Kostya at 06:00, 19 February 2006

2006-02-19T06:00:08Z

← Older revision		Revision as of 23:00, 18 February 2006
Line 4:		Line 4:

	=== Old DPCM ===		=== Old DPCM ===
			Decoding of DPCM is very simple: read nibble, get corresponding delta value from table and update current sample value.

			Delta table:

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-21,-15,-10, -6, -3, -2, -1, -0}

	=== New DPCM ===		=== New DPCM ===
			New scheme differs from old one by delta table (note the order of its second part):

			{ 0, 1, 2, 3, 6, 10, 15, 21,
			-0, -1, -2, -3, -6, -10, -15, -21}

	=== 16-bit DPCM ===		=== 16-bit DPCM ===
			TODO

	[[Category:Game Formats]]		[[Category:Game Formats]]

Kostya at 05:43, 19 February 2006

2006-02-19T05:43:52Z

New page

* Company: [[Sierra Entertainment]]

This is a set of DPCM codecs used in [[Sierra Audio]] and [[VMD]].

=== Old DPCM ===

=== New DPCM ===

=== 16-bit DPCM ===

[[Category:Game Formats]]