Contents of Floppy Diskette Accompanying Recommendation P.861
Last modified: May 25, 1998
Software License Agreement:
Notice to user: The ITU grants you a limited, non-exclusive,
nontransferable, royalty-free license to use one copy of the
vectors and test values of this Software on only a single
computer at any time and based on the following terms and
conditions, unless agreed to otherwise by separate agreement.
You may not rent, lease, sell, sublicense, assign or otherwise
transfer the Software, including any accompanying printed
materials. Your use of this Software indicates your acceptance
of these terms, and this license will terminate automatically
if you do not comply with the terms of this Agreement. You
further acknowledge that title and full ownership rights to the
Software will remain the property of the ITU and you will not
acquire any rights to the Software except as expressly set
forth above. The ITU is not obliged to provide maintenance or
updates to you for the Software.
I.1 Introduction
In order to assist the readers of ITU-T Recommendation P.861 in the
development of their own implementation of the PSQM, test vectors and a
detail of computed values have been provided on this floppy diskette
which is included with the Recommendation. This readme file provides a
description of the files on the diskette.
I.2 \test directory
This directory contains files for use in testing an implementation of
the PSQM for accuracy. The files contained in this directory are:
longs.cod longs.src outlong.txt
outshort.txt shorts.cod shorts.src
All numbers in an independent implementation of the PSQM should agree
with those in the files provided to at least 2 significant digits. The
contents of the files are described below.
longs.cod A coded speech file intended to be used in calibrating the
PSQM. Stored LSB first and delayed by 22 samples from the
source speech file.
longs.src The source speech file used to create longs.cod. Stored LSB
first.
outlong Frame-by-frame output for the long test vector. In addition
to the calibration variables (Sp and Sl), the file contains
the following information is included in the file:
calculated global scaling factor (Sglobal)
start and stop points for both source and coded speech
files
frame-by-frame noise disturbance (Ni)
frame-by-frame indicator of frame silence (1=silent,
0=not silent)
outshort Step-by-step variable values for the short test vector.
Requires the following values in the program:
delay = 0
start point = 0
stop point = 511
Sglobal = 1.0
The following intermediate values are provided in the file
input sequence (xi[n], yi[n])
windowed version of input sequence (xwi[n], ywi[n])
sampled Spectrum Power Density (Pxi[k], Pyi[k]
local scaling factor (Si)
sampled Pitch Power Density (Px'i[j], Py'i[j])
results of telephone-band filtering (PFxi[j], PFyi[j])
results of adding Hoth noise (PHxi[j], PHyi[j])
sampled compressed loudness density (Lxi[j], Lyi[j])
local loudness scaling factor (Sli)
sampled noise disturbance density (Ni[j])
asymmetry effect factor (Ci[j])
noise disturbance (Ni)
shorts.cod A coded speech file intended to be used in calibrating the
PSQM. Stored LSB first and delayed by 0 samples from the
source speech file.
shorts.src The source speech file used to create shorts.cod. Stored
LSB first.
directory listing of rfc.nop.hu/itu7/P/P861 Software/ at vpn.nop.hu:
extension | count | bytes | smallest | biggest | oldest | newest |
.dirs. | 1 | 0 | 0 | 0 | 2005-09-03 10:05:54 | 2005-09-03 10:05:54 |
.files. | 1 | 3625 | 3625 | 3625 | 1998-05-27 11:37:44 | 1998-05-27 11:37:44 |
.empty. | 1 | 0 | 0 | 0 | 2005-09-03 10:05:54 | 2005-09-03 10:05:54 |
TXT | 1 | 3625 | 3625 | 3625 | 1998-05-27 11:37:44 | 1998-05-27 11:37:44 |
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