GLSWEEP(1) General Commands Manual GLSWEEP(1)NAME
glsweep - a program generating log sweep and inverse filter.
SYNOPSIS
glsweep [parameters] sweepfile inversefile
Usage: glsweep rate amplitude hzstart hzend duration silence leadin leadout sweepfile inversefile
Example: glsweep 44100 0.5 10 21000 45 2 0.05 0.005 sweep.pcm inverse.pcm
DESCRIPTION
This manual page documents briefly the glsweep program. This manual page was written for the Debian distribution because the original pro-
gram does not have a manual page.
glsweep is program to perform accurate time aligned impulse response measurements.
glsweep is based on the log sweep method for impulse response measurement, which is one of the most accurate, especially for acoustic mea-
surements. This method is based on a special signal, which is a logarithmic sinusoidal sweep, that need to be reproduced through the system
under test, and an inverse filter, which, when convolved with the measured log sweep, gives back the impulse response of the system.
The output format is the usual raw file with 32 bit IEEE floating point samples. If you need to convert the sweep generated using the exam-
ple above to a 16 bit mono WAV file you can use SoX with a command line like this one:
sox -t f32 -r 44100 -c 1 sweep.pcm -t wav -c 1 sweep.wav
PARAMETERS
rate: reference sample rate
amplitude: sweep amplitude
hzstart: sweep start frequency
hzend: sweep end frequency
duration: sweep duration in seconds
silence: leading and trailing silence duration in seconds
leadin: leading window length as a fraction of duration
leadout: trailing window length as a fraction of duration
sweepfile: sweep file name
inversefile: inverse sweep file name
Refer to html documentation for more details.
SEE ALSO sox(1).
AUTHOR
This manual page was written by Jaromir Mike <mira.mikes@seznam.cz>, for the Debian project (but may be used by others).
August 30, 2011 GLSWEEP(1)
Check Out this Related Man Page
GLUPARTIALDISK(3G)GLUPARTIALDISK(3G)NAME
gluPartialDisk - draw an arc of a disk
C SPECIFICATION
void gluPartialDisk( GLUquadric* quad,
GLdouble inner,
GLdouble outer,
GLint slices,
GLint loops,
GLdouble start,
GLdouble sweep )
PARAMETERS
quad Specifies a quadrics object (created with gluNewQuadric).
inner Specifies the inner radius of the partial disk (can be 0).
outer Specifies the outer radius of the partial disk.
slices Specifies the number of subdivisions around the z axis.
loops Specifies the number of concentric rings about the origin into which the partial disk is subdivided.
start Specifies the starting angle, in degrees, of the disk portion.
sweep Specifies the sweep angle, in degrees, of the disk portion.
DESCRIPTION
gluPartialDisk renders a partial disk on the z = 0 plane. A partial disk is similar to a full disk, except that only the subset of the disk
from start through start + sweep is included (where 0 degrees is along the +y axis, 90 degrees along the +x axis, 180 degrees along the -y
axis, and 270 degrees along the -x axis).
The partial disk has a radius of outer, and contains a concentric circular hole with a radius of inner. If inner is 0, then no hole is gen-
erated. The partial disk is subdivided around the z axis into slices (like pizza slices), and also about the z axis into rings (as speci-
fied by slices and loops, respectively).
With respect to orientation, the +z side of the partial disk is considered to be outside (see gluQuadricOrientation). This means that if
the orientation is set to GLU_OUTSIDE, then any normals generated point along the +z axis. Otherwise, they point along the -z axis.
If texturing is turned on (with gluQuadricTexture), texture coordinates are generated linearly such that where r = outer, the value at (r,
0, 0) is (1.0, 0.5), at (0, r, 0) it is (0.5, 1.0), at (-r, 0, 0) it is (0.0, 0.5), and at (0, -r, 0) it is (0.5, 0.0).
SEE ALSO
gluCylinder, gluDisk, gluNewQuadric, gluQuadricOrientation, gluQuadricTexture, gluSphere
GLUPARTIALDISK(3G)