Float - Revision history

Raffriff42: Float audio range notes

2019-10-28T20:25:58Z

Float audio range notes

2017-04-28T03:36:48Z

expanded disambiguation

2016-04-03T15:58:22Z

2016-04-03T15:50:44Z

2016-01-01T16:05:31Z

link did not exist anymore

2014-09-17T16:29:36Z

link to alternate uses of Float; formatting

2014-07-05T19:36:40Z

typo

2014-06-23T22:46:37Z

2014-06-23T22:46:15Z

2014-06-23T22:45:44Z

@@ Line 7: / Line 7: @@
 '''Float''' (or fully IEEE floating point with single precision) is one of the [[ConvertAudio|AviSynth audio sample formats]].
-The samples of this type have values between -1.00000 (= 0xBF800000) and 1.000000 (= 0x3F800000).
+The samples of this type have normal values between -1.0 (= 0xBF800000) and +1.0 (= 0x3F800000). Values outside this range are usable as long as the audio remains in Float format, but will create audio clipping if [[ConvertAudio|converted]] to an integer format: 8, 16, 24 or 32 integer bits. For safety, you can call [[Normalize]] before converting from Float to Integer.
 The value of such a IEEE-754 number is computed as: sign * 2^exponent * 1.mantissa, using the following scheme:

← Older revision		Revision as of 03:36, 28 April 2017
Line 1:		Line 1:
−	''This page is about the ''Float ''audio format''. ''For the variable type, see [[Script_variables]]''. ''For the'' <code>Float()</code> ''function, go to [[Internal_functions#Float]]''	+	''This page is about the ''Float ''audio format.'' <br>
		+	:''For the variable type, see [[Script_variables]].'' <br>
		+	:''For the'' <code>Float()</code> ''function, go to [[Internal_functions#Float]].'' <br>
		+	:''For the {{Deep_color}} format, go to [[Float_(color_format)]]''

@@ Line 37: / Line 37: @@
   Sign bit is negative, exponent = 0, 1.mantissa = 1, so the number is -1.0
 source: [https://web.archive.org/web/20120728135435/http://www.opferman.net/Text/ieee.txt opferman.net]
 [[Category:Glossary]]

@@ Line 12: / Line 12: @@
 * The sign bit is 1 (negative) or 0 (positive).
 * The exponent runs from -127 (00000000) to 0 (0111111) to 128 (11111111).
-* The mantissa m1m2m3 ... means m1/2 + m2/4 + m3/8 + ... in decimal. Sometimes people denote "1.m1m2m3..." as the mantissa (like is done in the converter above).
+* The mantissa m1m2m3 ... means m1/2 + m2/4 + m3/8 + ... in decimal. Sometimes people denote "1.m1m2m3..." as the mantissa (like is done in the converter below).
 For an on-line converter between decimal numbers and IEEE 754 floating point, see [http://www.h-schmidt.net/FloatConverter/IEEE754.html here].

@@ Line 38: / Line 38: @@
   Sign bit is negative, exponent = 0, 1.mantissa = 1, so the number is -1.0
-source: [http://www.opferman.net/Text/ieee.txt opferman.net]
+source: [https://web.archive.org/web/20120728135435/http://www.opferman.net/Text/ieee.txt opferman.net]
 [[Category:Glossary]]

@@ Line 1: / Line 1: @@
-Float (or fully IEEE floating point with single precision) is one of the sample types of AviSynth's audio. For a converter see [http://www.h-schmidt.net/FloatConverter/IEEE754.html here].
+''This page is about the ''Float ''audio format''. ''For the variable type, see [[Script_variables]]''. ''For the'' <code>Float()</code> ''function, go to [[Internal_functions#Float]]''
 The samples of this type have values between -1.00000 (= 0xBF800000) and 1.000000 (= 0x3F800000).
@@ Line 5: / Line 8: @@
 The value of such a IEEE-754 number is computed as: sign * 2^exponent * 1.mantissa, using the following scheme:
-[ 1 Sign Bit | 8 Bit Exponent  | 23 Bit Mantissa ]
+<code>[ 1 Sign Bit | 8 Bit Exponent  | 23 Bit Mantissa ]</code>
 * The sign bit is 1 (negative) or 0 (positive).
 * The exponent runs from -127 (00000000) to 0 (0111111) to 128 (11111111).
 * The mantissa m1m2m3 ... means m1/2 + m2/4 + m3/8 + ... in decimal. Sometimes people denote "1.m1m2m3..." as the mantissa (like is done in the converter above).
 Examples:
@@ Line 33: / Line 38: @@
   Sign bit is negative, exponent = 0, 1.mantissa = 1, so the number is -1.0
-source: [http://www.opferman.net/Text/ieee.txt]
+source: [http://www.opferman.net/Text/ieee.txt opferman.net]
 [[Category:Glossary]]

← Older revision		Revision as of 19:36, 5 July 2014
Line 1:		Line 1:
−	Float (or fully IEEE floating point with single precision) is one of the ~~samples~~ types of AviSynth's audio. For a converter see [http://www.h-schmidt.net/FloatConverter/IEEE754.html here].	+	Float (or fully IEEE floating point with single precision) is one of the sample types of AviSynth's audio. For a converter see [http://www.h-schmidt.net/FloatConverter/IEEE754.html here].

	The samples of this type have values between -1.00000 (= 0xBF800000) and 1.000000 (= 0x3F800000).		The samples of this type have values between -1.00000 (= 0xBF800000) and 1.000000 (= 0x3F800000).

@@ Line 24: / Line 24: @@
 and
 xBF800000 = 10111111100000000000000000000000
   Sign Bit      Exp       1.Mantissa

@@ Line 13: / Line 13: @@
 Examples:
-x3F800000 = 00111111100000000000000000000000 (binary, see [http://easycalculation.]com/hex-converter.php]
+x3F800000 = 00111111100000000000000000000000 (binary, see [http://easycalculation.com/hex-converter.php])
   Sign Bit      Exp       1.Mantissa