Name: IKAR Lab, Caesar

Text: IKAR LAB

Professional hardware and software set for advanced audio/speech
signal analysis
Software Components

IKAR LAB
- SIS - Speech Interactive Software
- STC professional sound card with
an external unit
- Set of manuals

Additional Options
- Sound Cleaner Premium - universal
real time speech enhancement,
premium edition
- Caesar - transcription software

Training
STC experts provide basic and
advanced training in speech
enhancement, audio analysis,
speaker identification, and other
forensic audio subjects.
Consultancy and training can be
tailored to customer needs.
IKAR Lab is provided both with user
guides and manuals which include
theory and practical advice with up-todate sound analysis methodologies,
included are:
u SIS: Practical Usage
u Noise cancellation and decoding
of noisy recordings
u Forensic Audio Examinations:
Practice and methods

Professional sound card
In order to ensure professional
standards in sound quality, maximal
signal/ noise ratio and minimal nonlinear distortions, IKAR Lab is equipped
with STC sound card.

SIS 5.x

Sound Cleaner

SIS 5.x - Speech Interactive Software
- professional system for speech and
audio signal analysis & processing
u contains comprehensive set of
numerous speech editing/
processing/ analysis/ visualization
methods and tools
u includes multi-task set of tools for
forensic audio examinations:
speaker identification by voice,
tape and equipment
authentication, etc.
voice enhancement,
u provides
noise cancellation, efficient text
decoding of noise corrupted
speech recordings, audio
equipment testing and other
procedures
used by speech & audio
u is
specialists, forensic audio experts
and speech equipment
developers

Sound Cleaner - universal software
for real time noise cancellation and
speech enhancement
u provides professionals and nontechnical users with user
friendly, comprehensive and
specialized environment
u improves
speech
quality,
intelligibility & operator comfort
while listening to noisy live or
pre-recorded audio
u is effective against a wide variety
of noise: background bubble,
office equipment, industrial and
vehicle engines, street traffic,
wind, slow music, power supply
hum, noise of communication
channels, pulse-like
interferences, etc.
u contains 9 automatic & semiautomatic self-adjusting filters,
including a unique set of 4 stereo
filters and dynamic processing
u provides set of standard settings
to filter most types of noise
u includes 8,192-bands graphical
equalizer with 2,048 sliders,
classical and brand-new
adaptive filtering engines, as
well as many additional
procedures to support
comfortable work of the user.

Caesar
Caesar- transcription software
u high quality recording & playback
u effective and fast text decoding of
recorded & live audio with
automatical links between the text
& the corresponding audio
fragment
u variable playback speed without
voice / speech quality losses
u user-friendly, especially for nonprofessionals

SIS Speech Interactive Software is described in detail on the
following pages. There are detailed descriptions of Caesar and
Sound Cleaner in the corresponding leaflets.

Applications
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Excellent tool for forensic
sound recordings
examinations:
- text decoding,
- noise cancellation,
- speaker identification,
- audio equipment and tape
authentication, etc.
Audio signal editing/
processing/ analysis/
visualization
Audio equipment testing
Scientific research in speech &
audio sciences and acoustics
Audio signal measurement
Medical research in speech &
hearing
Sound/ music research and
education
Speech recognition,
compression and synthesis
methods development
Old recordings restoration etc.

Advantages
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Unique powerful environment
for noisy speech signal
processing
Sophisticated speech signal
analysis
Superpowerful signal editor
SIS 5.x
Speech enhancement and
noise cancellation in real time
Fast decoding of speech
recording text
Improvement in speech quality,
intelligibility and operator
comfort while listening to noisy
sound-recordings
Effective both for professionals
and for non-technical users
Many years of successful usage
in universities, clinics and in
forensic, law enforcement and
security agencies
User training and consulting

IKAR Lab screen showing
equalizer window with
inverse filter. Waveforms
of the poor quality source
signal and the subsequent
processed signal
equalizer (lower). The
difference can be clearly
seen

Advantages
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IKAR Lab working screen
with visualization dialogue
box open. Waveform (upper
left), spectrogram in color
(lower left) and spectrogram
in axonometry (below). Type,
size and zoom of any picture
can be easily adjusted.

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Pop-up menus
Mouse operations
Up to 253 working windows with
as many audio signals as you
need
Save configuration
Listen, mark, label, scroll, jump,
mix, paste, edit with a single
mouse-click
Several types of zoom
Axes re-scaling for any picture
characteristics
Annotate, transcript, link, save
and load audio signal any
duration within 180Mb of virtual
memory
Vertical and horizontal cursors
Temporary & permanent marks
5 types of data selection
Unique ability to convert barely
perceptible signal features in
spectral, cepstral or other areas
into distinctly visible traits in 3Dpictures
Linking of signals of various
sizes, types, dimensions and
sampling rates
6 types of 3D representation of
visible speech pictures
Interactive design for any 3Dpictures
Audible, numerical & graphical
direct comparing
of all
instantaneous and accumulated
speech features
Interfacing with programs for
additional signal processing

EASIER AND
FASTER
PROFESSIONAL
WORK

Features
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Linear transformations
Normalization
Clipping
Pauses zeroing
Arbitrary mu-transformation in
real time
Variable speed speech
playback without voice pitch
and signal quality losses
Linear arbitrary FIR filtering
(low-pass, high-pass, bandstop)
Digital precise 2,048 bands
graphical mouse-operated
equalizer
Linear adaptive mono and
stereo filtering
Manual and automatic pulselike interference removal
Dynamic filtering
Wideband noise reduction by
means of spectral subtraction
Automatic spectral inverse
filtering
Waveform, power spectrum
and cepstrum, LPC-spectrum,
autocorrelation, PARCOR ,
LPC, formants, energy, zero
crossing frequency, stable
spectrum and other types of
analysis
Pitch analysis: 6 different
methods
Unique method for checking
correctness of pitch
computation by overlay over
cepstrogram
Detailed pitch curves statistics
- 28-features of curve and
histogram
- max, min, mean and median
values
- moments, factors of raise
- stability and decrease
- 8 jitter and tremor factors, etc.
Manual signal editing/ drawing

ALL-IN-ONE
FOR THE
PROFESSIONAL

IKAR Lab working screen with analysis menu open. Each
type of analysis includes several methods and allows
fine adjustment of its settings and visualization.

IKAR Lab has been used for forensic examinations and
speech enhancement in the majority of law enforcement
departments in Russia as well as in some other
countries. It has also been used in security services of
many banks and businesses, in research, medical and
educational institutions. Over a long period of its
existence and development this system has absorbed
all the best practically useful adjustments in speech
research area.
IKAR Lab working screen with filtration menu open. In
the upper window you can see two waveforms - darker
blue one of the noisy signal, and lighter green one of the
filtered signal. In the lower window there are FFT spectra
of the source (upper red line) and the processed (lower
pink line) signals.

Document Path: ["1132-speech-technology-center-brochure-product.pdf"]

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