Electronic Arts MicroTalk - Revision history

Fatbag: /* Huffman tables */ Fix output command

2017-10-27T18:11:57Z

Huffman tables: Fix output command

← Older revision		Revision as of 11:11, 27 October 2017
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	\|MDL_LARGEPULSE		\|MDL_LARGEPULSE

Fatbag: /* Variants */ Fix typo (kit/s -> kbit/s)

2017-08-25T16:11:51Z

Variants: Fix typo (kit/s -> kbit/s)

← Older revision		Revision as of 09:11, 25 August 2017
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	== Variants ==		== Variants ==
	There are a few variants of MicroTalk:		There are a few variants of MicroTalk:
	* MicroTalk 10:1 (codec_id=0x04 in [[Electronic Arts SCxl\|EA SCxl]]) and MicroTalk 5:1 (codec_id=0x16) are really the same codec; the encoder simply chooses different compression parameters (reduced_bw is enabled in 10:1 and disabled in 5:1). MicroTalk 10:1 is typically encoded at ~~32kit~~/s; 5:1 is encoded at 64kbit/s.		* MicroTalk 10:1 (codec_id=0x04 in [[Electronic Arts SCxl\|EA SCxl]]) and MicroTalk 5:1 (codec_id=0x16) are really the same codec; the encoder simply chooses different compression parameters (reduced_bw is enabled in 10:1 and disabled in 5:1). MicroTalk 10:1 is typically encoded at 32kbit/s; 5:1 is encoded at 64kbit/s.
	* MicroTalk Revision 3 (codec_revision=3 in SCxl) is a variant which supports raw PCM samples.		* MicroTalk Revision 3 (codec_revision=3 in SCxl) is a variant which supports raw PCM samples.

Fatbag: Fatbag moved page Maxis UTalk to Electronic Arts MicroTalk: Maxis UTalk is really Electronic Arts MicroTalk

2017-08-20T20:59:07Z

Fatbag moved page Maxis UTalk to Electronic Arts MicroTalk: Maxis UTalk is really Electronic Arts MicroTalk

← Older revision	Revision as of 13:59, 20 August 2017
(No difference)

Fatbag: Maxis UTK is really EA MicroTalk

2017-08-20T20:57:48Z

Maxis UTK is really EA MicroTalk

Show changes

Fatbag at 02:56, 20 January 2012

2012-01-20T02:56:10Z

← Older revision		Revision as of 19:56, 19 January 2012
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	* Company: Maxis		* Company: Maxis
	* Decompression code: http://wiki.niotso.org/UTK		* Decompression code: http://wiki.niotso.org/UTK
			* Samples: http://niotso.org/utalk/

	Maxis UTalk is a speech-oriented audio codec used in The Sims Online, which operates at 32kbit/s.		Maxis UTalk is a speech-oriented audio codec used in The Sims Online, which is based on CELP and operates at 32kbit/s.

	== UTK File header ==		== UTK File header ==

Fatbag at 06:55, 15 January 2012

2012-01-15T06:55:45Z

← Older revision		Revision as of 23:55, 14 January 2012
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	WAV and MP3 are common audio formats, and XA refers to the [[Maxis XA]] ADPCM codec (with extension ".xa" in The Sims 1); and most importantly, the UTK files in the DBPF archives have a Type ID that match 0x1b6b9806.		WAV and MP3 are common audio formats, and XA refers to the [[Maxis XA]] ADPCM codec (with extension ".xa" in The Sims 1); and most importantly, the UTK files in the DBPF archives have a Type ID that match 0x1b6b9806.

			[[Category:Vocoders]]
	[[Category:Audio Codecs]]		[[Category:Audio Codecs]]
	[[Category:~~ADPCM Audio Codecs~~]]		[[Category:Formats missing in FFmpeg]]
	[[Category:Game Formats]]		[[Category:Game Formats]]

Fatbag at 03:47, 15 January 2012

2012-01-15T03:47:21Z

New page

* Extension: UTK
* Company: Maxis
* Decompression code: http://wiki.niotso.org/UTK

Maxis UTalk is a speech-oriented audio codec used in The Sims Online, which operates at 32kbit/s.

== UTK File header ==
<pre>struct UTKHeader
{
char sID[4];
DWORD dwOutSize;
DWORD dwWfxSize;
/* WAVEFORMATEX */
WORD wFormatTag;
WORD nChannels;
DWORD nSamplesPerSec;
DWORD nAvgBytesPerSec;
WORD nBlockAlign;
WORD wBitsPerSample;
DWORD cbSize;
};
</pre>

* '''sID''' - A 4-byte string identifier equal to "UTM0"
* '''dwOutSize''' - The decompressed size of the audio stream
* '''dwWfxSize''' - The size in bytes of the WAVEFORMATEX structure to follow; must be 20
* '''wFormatTag''' - The decoded audio format; set to WAVE_FORMAT_PCM (0x0001)
* '''nChannels''' - Number of channels in the decoded audio data
* '''nSamplesPerSec''' - Sampling rate used in the decoded audio data
* '''nAvgBytesPerSec''' - Bytes per second consumed by the decoded audio data; equal to nChannels*nSamplesPerSec*wBitsPerSample/8 or nSamplesPerSec*nBlockAlign
* '''nBlockAlign''' - The number of bytes consumed by an audio frame (one sample for each channel) in the decoded audio data; equal to nChannels*wBitsPerSample/8
* '''wBitsPerSample''' - The bits per sample for one audio channel in the decoded audio data; 8-, 16-, or 24-bit, etc.
* '''cbSize''' - The size in bytes of extra format information appended to the end of the WAVEFORMATEX structure; must be 0. Note that in the original WAVEFORMATEX, this parameter is a WORD, not a DWORD.

Note that the part of the header from wFormatTag below is a Microsoft WAVEFORMATEX structure.

== Naming notes ==
The UTK files in The Sims Online were stored in DBPF archives without filenames. However, we can deduce the codec's name and file extension from this text contained in sys/tsoaudio.ini:

<pre>;kGZCLSID_cWaveXA = 0x1d07eb4b
;kGZCLSID_cGZSndSegmentDataSourceUTalk = 0x1b6b9806
;kGZCLSID_cGZWave = 0xbb7051f5
;kGZCLSID_cHitMp3DecoderDataSource = 0x3cec2b47
1=0x1d07eb4b,XA
2=0x1b6b9806,UTK
3=0xbb7051f5,WAV
4=0x3cec2b47,MP3</pre>

WAV and MP3 are common audio formats, and XA refers to the [[Maxis XA]] ADPCM codec (with extension ".xa" in The Sims 1); and most importantly, the UTK files in the DBPF archives have a Type ID that match 0x1b6b9806.

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