lingWAVES Vospector
Voice Quality Analysis within Seconds
lingWAVES Vospector measures voice quality
parameters within seconds. Just record a sustained vowel, select a
required part of the record, click to start analysis and within 2
seconds you will get an all inclusive voice analysis with reliable
clinical parameters. Colored bar graphs show if the measured voice has
pathological features; compare two recordings to see and document voice
changes.
Voice quality analysis of a
spasmodic dysphonia patient before (left) and compared after treatment
(right). The bar graphs show the perceived irregularity/roughness,
noise/breathiness and overall severity/roughness of the voice. The right
picture shows a lower roughness (2.67 - 1.52) after treatment but a
stable normal breathiness (0.6 - 0.68), indication of a better vocal
fold movement.
Instantaneous and Reliable Voice Analysis
lingWAVES Vospector measurements made on sustained vowels include minimum,
maximum, average and standard deviation for fundamental frequency,
jitter (period to period variation in the fundamental frequency),
shimmer (period to period variation in the amplitude) and GNE (glottal
to noise excitation ratio).
Studies have show that jitter, shimmer
and other traditional acoustical parameters are not specific to
perceptual attributes of voice and less useful for clinical
documentation. Therefore Vospector uses new methods to calculate
specific parameters with a high correlation to perceptual attributes.
Acoustic Correlates of Perceptual Attributes of Voice
according to the RBH/ORB Rating System
Separate measurements “add up” to yield further voice
parameters like irregularity, noise and overall severity of dysphonia
that can be regarded as objective counterparts to R (roughness), B
(breathiness) and H (hoarseness) components of the RBH/ORB (Cape-V) rating system for
the perceptual evaluation of dysphonia.
Everything at a Glance
All measurements and analyses are clearly arranged in a
single window. The analysis readouts are displayed with reference to
normative data measured on voice healthy subjects. Normal and
pathological voice parameters can be distinguished by colour.
Vospector analyses are made instantaneously. Once the
Vospector module is open, a user needs to record a vowel sustained at
constant pitch for approximately 2-3 seconds and select with a mouse the
steady state in the centre of the sample. The results are calculated
post-processing within 2 seconds.
Monitoring and Cross-comparing Voice Changes
The lingWAVES Vospector module makes it possible to
cross-compare measurements for objective evidence of change/improvement
in vocal fold function. To make a cross-comparison, load a previously
performed and saved Vospector analysis into the current one. This is how
even subtle voice changes can be detected and displayed.
Saving and Printing Data
As is the case with all lingWAVES modules, all
recordings and measurements can be saved in the Patient Manager.
Separate measurements and cross-comparisons can be printed for filing.
Additional information (patient name, institution etc.) will appear on
printed reports.
The lingWAVES Vospector
protocol showing a multi-parameter voice profile with fundamental
frequency, jitter, shimmer and GNE measured on the current (left) and
comparative recordings (middle). On the right the two recordings are
compared in regards with irregularity, noise and overall severity of
dysphonia. lingWAVES Vospector software
Vospector voice analysis:
 |
Minimum, maximum, average
and standard deviation for fundamental frequency
|
|
|
Jitter |
|
|
Shimmer
|
|
|
GNE (glottal to noise excitation
ratio) |
|
|
Irregularity |
|
|
Noise
|
|
|
Overall severity of dysphonia
|
|
|
Comparison with other samples |
|
|
Printable results |
System Requirements
Windows (2000, XP), min. Pentium IV, min. 512 MB RAM, soundcard, PC-loudspeakers,
CD-ROM drive, USB-port, microphone/sound level meter (for phonetography)
lingWAVES SLP/SLT & Voice Clinic Suites
This module is part of the following
lingWAVES suites:
Web Request / Dealers
If you are interested in our products, please contact a local
WEVOSYS dealer
or use our
web request
form. |
