DCT - Revision history

Thorsted: Wikidata

2022-05-11T18:15:17Z

Wikidata

Jsummers at 13:52, 3 October 2020

2020-10-03T13:52:30Z

Thorsted: Added PRONOM ID

2020-01-21T14:14:18Z

Added PRONOM ID

Thorsted at 15:06, 22 July 2019

2019-07-22T15:06:55Z

Dan Tobias at 14:04, 5 January 2014

2014-01-05T14:04:34Z

Halftheisland: Created page with "{{FormatInfo |formattype=electronic |subcat=Audio and Music |extensions={{ext|dct}}, {{ext|wav}} }} == Description == DCT is a proprietary audio file format developed by NCH..."

2013-01-22T12:51:48Z

Created page with "{{FormatInfo |formattype=electronic |subcat=Audio and Music |extensions={{ext|dct}}, {{ext|wav}} }} == Description == DCT is a proprietary audio file format developed by NCH..."

New page

{{FormatInfo
|formattype=electronic
|subcat=Audio and Music
|extensions={{ext|dct}}, {{ext|wav}}
}}

== Description ==

DCT is a proprietary audio file format developed by NCH Software for their dictation software. As well as audio data, '''.dct''' files also contain dictation header information and can be encrypted. The format is aimed in particular at markets such as medical dictation, where confidentiality laws often require encryption.

DCT is a variable codec format, meaning it can contain audio data encoded with a number of codecs including [[MP3]], [[CELP]] and [[GSM]].

== Information ==

* [http://www.nch.com.au/acm/formats.html NCH Software - File Formats]. Note that while NCH Software list DCT as an "open" file format, the only software which appears to create or play it is written by them and there does not seem to be any published specification, which doesn't seem particularly open.
* [http://www.nch.com.au/acm/index.html NCH Software - Wave File Compression Codecs Compared]

== Software ==

* [http://www.nch.com.au/scribe/index.html Express Scribe Transcription Software] can play back '''.dct''' files.
* [http://www.nch.com.au/switch/index.html Switch Sound File Converter] can convert between DCT and a number of other formats.

@@ Line 4: / Line 4: @@
 |extensions={{ext|dct}}, {{ext|wav}}
 |pronom={{PRONOM|fmt/1280}}
 }}
 :''For other "DCT" formats, see [[DCT compression]], [[DCT (Crash Barrier)]], and [[DACT]].''

@@ Line 5: / Line 5: @@
 |pronom={{PRONOM|fmt/1280}}
 }}
 == Description ==

← Older revision		Revision as of 15:06, 22 July 2019
Line 20:		Line 20:
	* [http://www.nch.com.au/scribe/index.html Express Scribe Transcription Software] can play back '''.dct''' files.		* [http://www.nch.com.au/scribe/index.html Express Scribe Transcription Software] can play back '''.dct''' files.
	* [http://www.nch.com.au/switch/index.html Switch Sound File Converter] can convert between DCT and a number of other formats.		* [http://www.nch.com.au/switch/index.html Switch Sound File Converter] can convert between DCT and a number of other formats.
		+	* [https://www.nch.com.au/etools/index.html DCT File Format Software Development Kit]

@@ Line 3: / Line 3: @@
 |subcat=Audio and Music
 |extensions={{ext|dct}}, {{ext|wav}}
 }}

@@ Line 7: / Line 7: @@
 == Description ==
-DCT is a proprietary audio file format developed by NCH Software for their dictation software. As well as audio data, '''.dct''' files also contain dictation header information and can be encrypted. The format is aimed in particular at markets such as medical dictation, where confidentiality laws often require encryption.
+'''DCT''' is a proprietary audio file format developed by NCH Software for their dictation software. As well as audio data, '''.dct''' files also contain dictation header information and can be encrypted. The format is aimed in particular at markets such as medical dictation, where confidentiality laws often require encryption.
-DCT is a variable codec format, meaning it can contain audio data encoded with a number of codecs including [[MP3]], [[CELP]] and [[GSM]].
+DCT is a variable codec format, meaning it can contain audio data encoded with a number of codecs including [[MP3]], [[CELP]] and [[GSM]]. It's apparently only coincidental that some of the codecs might use the compression technique known as [[DCT compression]] (Discrete cosine transform).
 == Information ==