Programmer Guide/Command Reference/EVAL/aseg1 - Revision history

Toni at 07:05, 6 June 2013

2013-06-06T07:05:50Z

← Older revision		Revision as of 09:05, 6 June 2013
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	::with: i=0..<code>nrow(''r'')</code>		::with: i=0..<code>nrow(''r'')</code>
	----		----
	;Usage 2:<code>aseg1(<var>x</var>, 0, <var>n</var>, <var>m</var>, <var>xmax</var>, <var>xmin</var>)</code>		;Usage 2:<code>aseg1(<var>x</var>, 1, <var>n</var>, <var>m</var>, <var>xmax</var>, <var>xmin</var>)</code>
	:;<var>x</var>: data vector (usally rms track in dB)		:;<var>x</var>: data vector (usally rms track in dB)
	:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>		:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>

Christian at 18:27, 21 April 2011

2011-04-21T18:27:07Z

← Older revision		Revision as of 20:27, 21 April 2011
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	:;<var>x</var>: data vector (usally rms track in dB)		:;<var>x</var>: data vector (usally rms track in dB)
	:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>		:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>
	:;<var>m</var>: smoothing length; 0 <= m</code>; if ''m'' is greater than zero, the segmentation is performed on a smoothed data vector ''xs''.		:;<var>m</var>: smoothing length; 0 ≤ m</code>; if ''m'' is greater than zero, the segmentation is performed on a smoothed data vector ''xs''.
	:::<code>''xs''[i] = avr(''x''[i-m], .., ''x''[i+m]); with: i=0..nrow(''x'')</code>		:::<code>''xs''[i] = avr(''x''[i-m], .., ''x''[i+m]); with: i=0..nrow(''x'')</code>
	:;<var>xmin</var>: segment threshhold		:;<var>xmin</var>: segment threshhold
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	:;<var>x</var>: data vector (usally rms track in dB)		:;<var>x</var>: data vector (usally rms track in dB)
	:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>		:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>
	:;<var>m</var>: smoothing length; 0 <= m</code>; if ''m'' is greater than zero, the segmentation is performed on a smoothed data vector ''xs''.		:;<var>m</var>: smoothing length; 0 ≤ m</code>; if ''m'' is greater than zero, the segmentation is performed on a smoothed data vector ''xs''.
	:::<code>''xs''[i] = avr(''x''[i-m], .., ''x''[i+m]); with: i=0..nrow(''x'')</code>		:::<code>''xs''[i] = avr(''x''[i-m], .., ''x''[i+m]); with: i=0..nrow(''x'')</code>
	:;<var>xmax</var>: maximum threshold; the maximum value of a segment must be greater than ''xmax''		:;<var>xmax</var>: maximum threshold; the maximum value of a segment must be greater than ''xmax''

193.171.195.48 at 09:07, 21 April 2011

2011-04-21T09:07:57Z

← Older revision		Revision as of 11:07, 21 April 2011
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	----		----

	[[~~Programmer_Guide~~/~~Command_Reference/EVAL~~#Functions\|<function list>]]		[[../#Functions\|<function list>]]

Toni at 14:50, 12 April 2011

2011-04-12T14:50:09Z

← Older revision		Revision as of 16:50, 12 April 2011
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	\|''r''[0,i] \|\| beginning of the segment i		\|''r''[0,i] \|\| beginning of the segment i
	\|-		\|-
	\|''r''[3,i] \|\| end of the segment i		\|''r''[1,i] \|\| end of the segment i
	\|}		\|}
	::with: i=0..<code>nrow(''r'')</code>		::with: i=0..<code>nrow(''r'')</code>

Toni at 14:16, 12 April 2011

2011-04-12T14:16:17Z

← Older revision		Revision as of 16:16, 12 April 2011
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	:;<var>xmin</var>: minimum threshold; all values of a segment must be greater than ''xmin''		:;<var>xmin</var>: minimum threshold; all values of a segment must be greater than ''xmin''
	;Description: segment detection:		;Description: segment detection:
	:#find a position ''i'' with ''x''[i]>''~~xon~~''		:#find a position ''i'' with ''x''[i]>''xmax''
	:#go backward while ''x''[i-j]>''~~xoff~~; last index i-j is the segment begin		:#go backward while ''x''[i-j]>''xmin; last index i-j is the segment begin
	:#go forward while ''x''[i+k]>''~~xoff~~; last index i+k is the segment end		:#go forward while ''x''[i+k]>''xmin; last index i+k is the segment end
	;Result 2: A matrix ''r'' with 2 rows. Each column of ''r'' defines one segment. Note that all values of ''r'' are frame indices (or row indices) of the data vector ''x''.		;Result 2: A matrix ''r'' with 2 rows. Each column of ''r'' defines one segment. Note that all values of ''r'' are frame indices (or row indices) of the data vector ''x''.
	::{\|class="einrahmen"		::{\|class="einrahmen"

Toni at 14:15, 12 April 2011

2011-04-12T14:15:53Z

← Older revision		Revision as of 16:15, 12 April 2011
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	::with: i=0..<code>nrow(''r'')</code>		::with: i=0..<code>nrow(''r'')</code>
	----		----
	;Usage 2:<code>aseg1(<var>x</var>, 0, <var>n</var>, <var>m</var>, <var>~~xon~~</var>, <var>~~xoff~~</var>)</code>		;Usage 2:<code>aseg1(<var>x</var>, 0, <var>n</var>, <var>m</var>, <var>xmax</var>, <var>xmin</var>)</code>
	:;<var>x</var>: data vector (usally rms track in dB)		:;<var>x</var>: data vector (usally rms track in dB)
	:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>		:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>
	:;<var>m</var>: smoothing length; 0 <= m</code>; if ''m'' is greater than zero, the segmentation is performed on a smoothed data vector ''xs''.		:;<var>m</var>: smoothing length; 0 <= m</code>; if ''m'' is greater than zero, the segmentation is performed on a smoothed data vector ''xs''.
	:::<code>''xs''[i] = avr(''x''[i-m], .., ''x''[i+m]); with: i=0..nrow(''x'')</code>		:::<code>''xs''[i] = avr(''x''[i-m], .., ''x''[i+m]); with: i=0..nrow(''x'')</code>
	:;<var>~~xmin~~</var>: segment ~~threshhold~~		:;<var>xmax</var>: maximum threshold; the maximum value of a segment must be greater than ''xmax''
	:;<var>~~omax~~</var>: ~~offset for~~ segment ~~center; 0 < omax~~		:;<var>xmin</var>: minimum threshold; all values of a segment must be greater than ''xmin''
	;Description: segment detection:		;Description: segment detection:
	:#find a position ''i'' with ''x''[i]>''xon''		:#find a position ''i'' with ''x''[i]>''xon''

Toni at 14:13, 12 April 2011

2011-04-12T14:13:38Z

Show changes

Toni at 14:02, 12 April 2011

2011-04-12T14:02:31Z

← Older revision		Revision as of 16:02, 12 April 2011
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	:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>		:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>
	:;<var>m</var>: smoothing length; 0 <= m</code>; if ''m'' is greater than zero, the segmentation is performed on a smoothed data vector ''xs''.		:;<var>m</var>: smoothing length; 0 <= m</code>; if ''m'' is greater than zero, the segmentation is performed on a smoothed data vector ''xs''.
	::<code>''xs''[i] = avr(''x''[i-m], .., ''x''[i+m])</code>		:::<code>''xs''[i] = avr(''x''[i-m], .., ''x''[i+m]); with: i=0..nrow(''x'')</code>
	:;<var>xmin</var>: segment threshhold		:;<var>xmin</var>: segment threshhold
	:;<var>omax</var>: offset for segment center; 0 < omax		:;<var>omax</var>: offset for segment center; 0 < omax

Toni at 14:01, 12 April 2011

2011-04-12T14:01:45Z

@@ Line 11: / Line 11: @@
 ;Description:
 :#A segment is a continuous range of ''x'', where all values are greater than ''xmin''
-:#The center of a segment is a continuous range of values inside a segment, where all values are greater than ''xmax''-''omax (with: ''xmax'' is the maximum value inside the segment).
+:#The center of a segment is a continuous range of values inside a segment, where all values are greater than ''xmax''-''omax'' (with: ''xmax'' is the maximum value inside the segment).
 ----
 ;Usage 2:<code>fft(<var>x</var>)</code>
@@ Line 116: / Line 126: @@
 A matrix (or vector) <code>y</code> with 4 rows and one column for each detected segment. Note that all values of <code>y</code> are frame indices.

Toni at 13:55, 12 April 2011

2011-04-12T13:55:27Z

← Older revision		Revision as of 15:55, 12 April 2011
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	This function implements a simple automatic signal segmentation based on the energy (rms) track of the signal.		This function implements a simple automatic signal segmentation based on the energy (rms) track of the signal.
	----		----
	;Usage 1:<code>aseg1(<var>x</var>, 0, <var>n</var>, <var>m</var>, <var>xmin</var>~~, <var>omin</var>,~~ , <var>omax</var>)</code>		;Usage 1:<code>aseg1(<var>x</var>, 0, <var>n</var>, <var>m</var>, <var>xmin</var>, <var>omax</var>)</code>
	:;<var>x</var>: data vector (usally rms track in dB)		:;<var>x</var>: data vector (usally rms track in dB)
	:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>		:;<var>n</var>: minimum length of a signal segment in frames; 0 < n < <code>nrow(''x'')</code>
	:;<var>xmin</var>: ~~pause~~ threshhold		:;<var>m</var>: smoothing length; 0 <= m</code>; if ''m'' is greater than zero, the segmentation is performed on a smoothed data vector ''xs''.
	:;<var>~~osig~~</var>: ~~pause threshhold~~		::<code>''xs''[i] = avr(''x''[i-m], .., ''x''[i+m])</code>
			:;<var>xmin</var>: segment threshhold
			:;<var>omax</var>: offset for segment center; 0 < omax
			;Description:
			:#A segment is a continuous range of ''x'', where all values are greater than ''xmin''
			:#The center of a segment is a continuous range of values inside a segment, where all values are greater than ''xmax''-''omax (with: ''xmax'' is the maximum value inside the segment).