Contents of Floppy Diskette Accompanying Recommendation P.861

Last modified:  May 25, 1998 

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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.