HMS IV.1 - HEAD acoustics

HMS IV.1 - HEAD acoustics
Ebertstraße 30a
52134 Herzogenrath
Tel.: +49 2407 577-0
Fax: +49 2407 577-99
HMS IV.1 (Code 1501)
Digital artificial head measurement
system with CompactFlash, wireless
remote control, tiaxial laser pointer
and USB interface
·· Direct recording and playback via
Com­pactFlash card
·· Bluetooth® remote control system
RC VI for controlling all functions of
the HMS IV.1
·· Interfaces: USB 2.0, AES/EBU, pulse
in, RS-232, analog out
·· Headphone output for direct,
equal­ized playback or monitoring
·· Triaxial laser pointer TLP for exact
posi­tion­ing of the HMS IV.1 (easy
mount­ing on head platform on the
top side of the HMS IV.1)
·· Equalization options
·· High dynamic range thanks to 24bit technology
·· Sampling rates: 32, 44.1, 48,
88.2, 96 kHz
·· Calibratable measurement system
·· High input range
·· Extremely low noise
·· Charge indicator for battery (can be
polled e.g. via RC VI)
·· Intelligent battery management
·· Automatic system check
·· Compatible with artificial head
measure­­­­ment­ sys­tems HMS IV.0,
HMS III.0 and HMS III.L, including
HMS data
(e.g. HD IV.1 or HD IV.2) for aurally
accurate playback
·· Seat mount adapter HSM V
·· Bluetooth® adapter BTA for HMS III/
IV, BEQ­ II for receiving control signals of the HEAD Control Remote
App (for Android as of V. 2.3.3)
·· Second artificial head (HMS IV.1,
HMS IV.0, HMS III.0) or a BEQ II
unit for four-channel recordings
·· HEADlab, the modular multi-channel front-end system
·· SQuadriga II, the mobile recording
and playback system
The latest generation of the HMS artificial head measurement systems offered by HEAD acoustics is HMS IV.1
being comprehensively equipped and
allowing for both a completely autarkic handling and thus being independent from other devices, e.g. a PC.
The properties of the HMS IV.1 allow
for high flexibility for aurally accurate
binaural recordings.
Recordings can be saved directly to a
CompactFlash card, which is installed
in an easily accessible slot located on
the front of the HMS IV.1.
Aurally accurate playback directly
from the CompactFlash card via a
head­phone, such as the dynamic
head­phones HD IV.1 or HD IV.2, is
possi­ble thanks to the addition of an
inte­grated head­phone output.
With the RC VI remote control system, consisting of a Blue­tooth®
­­ad­ap­­ter and a PDA, all functions of
the HMS IV.1 can now be controlled
Furthermore, the HMS IV.1 is prepared for mounting various additional
equip­ment, such as the laser pointer
Extension Options
·· HEAD­­Recorder software (via note­­
·· High-end headphones 12.2014 D1501e8
Subject to change
The HMS IV.1 can be connected directly to the controller module of a HEADlab system. With the
HSM V seat mount adapter, the entire hardware can be safely mounted in a car.
Recordings can
be saved directly
to a Com­­pact­
Flash card and
played back from
the card. The CF
slot in the front
side of the shoulder unit is easily
acces­sible, so the card can be easily
Wireless Remote Control RC VI
All functions of
the HMS IV.1
can be remotely
controlled with
the RC VI system,
consisting of a
PDA (Personal
Digital Assistant)
and a Bluetooth®
­adapter attached directly to the
HMS IV.1. The RC VI has a range of
about up to 10 meters (30 ft).
Triaxial Laser Pointer TLP
In order to position the HMS IV
exactly and re­pro­
ducibly, the TLP
can be mounted
easily on the
top mounting
platform of the
artificial head. With its three laser
beams, the position and orientation
of the HMS IV.1 can then be adjusted
Via the headphone output on
the back side of
the HMS IV.1, a
direct playback
of audio sig­nals
for monitoring
or playback from
the Com­pactFlash card is possible,
e.g. with the optional dy­namic headphones HD IV.1 or HD IV.2.
USB Interface
Alternatively, recordings can be saved
directly to a notebook or PC via the
USB 2.0 inter­face.
Analog Output
With its analog output, the artificial
head can also be operated in combination with ana­lo­g measurement
Since the analog output signal is
gen­er­ated from the digital signal,
the advan­tages of the digital signal
equalization are maintained.
12.2014 D1501e8
Subject to change
Pulse Inputs
The HMS IV.1 electronics allows RPM
pulses to be recorded on to the digital
signal via two pulse inputs. For electrical isolation, an adapter contained in
the scope of supply is available. For
the signal conditioning, auxiliary devices can be used.
Dynamic Range
The artificial heads of the HMS IV
gen­eration are characterized by a
dy­nam­ic range comparable to that
of the human ear. This allows sound
events to be recorded just as a person
would hear them if the person was
in the same position as the artificial
head during the recording.
The mains-independent power supply
via a rechargeable battery allows for
high mobility and makes the HMS IV.1
ideal for mobile use.
The battery level can be polled at any
time, for example, via the RC VI remote control.
Five different equalization types can
be selected: linear (LIN - no equalization), independent-of-direction equalization (ID), free field equalization
(FF), diffuse field equalization (DF) as
well as a user-defined equalization
setting (USER), which can be tailored
to specific needs.
External Synchronization
Via the AES/EBU input, the artificial
head can be synchronized to an external sam­pling rate. This function is
essential for combining several digital
artificial head measurement systems
or for the connec­tion to other digital
systems supported by HEAD acoustics.
Automatic System Check
The HMS IV.1 automatically performs
an extensive system check, during
which all components in the signal
path are checked for proper function.
This makes sure that possible errors or
failures in the measurement chain are
detected. Devia­tions from predefined
tolerance ranges are corrected automatically.
Four-channel Recordings
With two HMS IV units, four-channel
re­cordings are possible with sam­pling
rates up to 88 kHz. The com­pat­ibility
of the HMS IV.1 also allows fourchannel recordings in connection with
other front ends.
Like all other functions of the
HMS IV.1, four-channel recordings
in stand-alone operation can be (remotely) controlled via the RC VI and
saved to a Com­pact­Flash card.
Extensions (optional)
The HSM V seat
mount adapter is a
stable and convenient platform
for mounting an
artificial head and
other devices on a
car seat
Bluetooth Adapter BTA
In combination
with the HEAD
Remote Control
App for Android
smartphones or
tablets the Bluetooth® adapter
allows to control
remotely artificial heads from a distance of up to 10 meters (30 ft).
The HEAD Remote Control is available via the Download Center on the
homepage of HEAD acoustics and
can be used in combination with the
Bluetooth® adapter of the RC VI, too.
HMS IV.1 and HEADlab
The modular
front-end system
HEADlab is ideal
for the use of one
or more HMS IV.1
The controllers
labCTRL I.1 and ­­labCTRL I.2 have
one HMS interface each, and in
combination with an input module
labHMS, up to four artificial heads
can be used. In addition, the input
module labDX has one HMS interface, too.
Various HEADlab modules are available with which user can customize
their systems with up to 360 channels (artificial heads, CAN, OBD-2,
FlexRay, pulse, line, ICP sensors,
condenser microphones, etc.).
HMS IV.1 and SQuadriga II
SQuadriga II has
an HMS interface
for recording
artificial head
signals via adapters and adapter
cables in digital
form. Furthermore, with SQuadriga II
GPS, CAN respectively OBD-2 and
pulse channels and also up to six ICP
or other channels can be recorded,
both in stand-alone mode as well as
in front-end mode.
Standard Delivery Items
·· HMS IV.1 (Code 1501)
Digi+tal Artificial head measurement system with CompactFlash
and USB interface
·· RC VI (Code 1966)
Remote control for HMS IV.1 (Bluetooth® adapter and PDA)
·· TLP (Code 1967)
Triaxial laser pointer for HMS IV.1
·· PSH I.1 (Code 1364) External power supply
·· SBH I (Code 1315)
Stand base for HMS IV.1
·· HCF IV.4 (Code 1599-4)
CompactFlash card for HMS IV,
·· CF card reader (USB 2.0) for trans­
ferring the card contents to a PC
·· Pulse adapter (for electrical isolation
of the pulse inputs)
·· PCC 1.9x (Code 997x)
Mains cable (local specification)
·· CUSB II.1.5 (Code 5478-1.5)
Cable USB 2.0, 1.5 m
·· CXX II.3 (Code 5177-3)
Cable XLR 3-pin male ↔ XLR 3-pin
female (AES/EBU), 2.95 m
·· CMD III.0 (Code 9809) Breakout cable 2 x BNC ↔ D-Sub,
15-pin (Pulse In for HMS), 1.5 m
·· HEAD Tools setup DVD
·· HSC IV (Code 1524)
Carrying case for HMS IV.1
·· Equalization CD
·· Manual
Accessories - hardware
·· HSM V (Code 1520)
Seat Mount Adapter
·· HTB VI (Code 1574) HEAD Torso Box for HMS IV.1
·· HMT II (Code 1962)
Tripod for HMS IV.1
·· HWS (Code 1960) Windshield for outside recording
·· CDB III.1 (Code 9811)
Breakout cable D-Sub 15-pin ↔ 2 x BNC, Analog Out for HMS, 1.5 m (59“)
·· CXO. I.1 (Code 5176)
Power supply cable XLR 4-pin ↔
cable lugs, 2 m (78.7”)
·· PDB II.1 (Code 3716)
Passive power distributor for power
supply of up to 4 HMS artificial
For more information on other supported CF cards please contact your
sales representa­tive.
·· labCTRL I.2 (Code 3702) LAN controller for HEADlab
·· labHMS (Code 3742)
Input module with 3 AES/RS232
interfaces for connecting up to 3
HMS artificial heads
·· labDX (Code 3741) Input module with CAN, FlexRay,
pulse and AES/RS232 interfaces
·· CDX X.3 (Code 3783-3) Breakout cable 2 x XLR 3-pin, D-Sub
9-pin ↔ D-Sub 9-pin (HEADlab ↔ HMS), 3 m (118“)
SQuadriga II
·· SQuadriga II (Code 3320)
Mobile recording and playback system - suitable as stand-alone system
or USB front end
·· CLX VII.1 (Code 3352)
Adapter cable AES/EBU ↔ SQuadriga II
·· CLD VII.8 (Code 3358)
RS232 adapter ↔ SQuadriga II (for stand-alone mode only)
·· CAB I.xx (Code 5475-xx)
Cable D-Sub. 9-pin male ↔
D-Sub. 9-pin female (RS232) (for stand-alone mode only)
Recommended headphones
· HD IV.1 (Code 2380)
dynamic headphone
· HD IV.2 (Code 2481)
dynamic headphone
HD IV.1 and HD IV.2 are factoryequalized with standard equalizer curves; other equalizers for headphones
supported by HEAD acoustics can be
installed as needed.
Accessories - software
·· ArtemiS suite Basic Framework
(Code 5000)
·· ArtemiS suite Data Acquisition Module (Code 5004)
·· ArtemiS suite (Code 5001ff)
Additional ArtemiS suite Modules
Technical Data
Measuring components
Nom. SPL (selectable):
84 dBSPL, 94 dBSPL, 104 dBSPL, 114 dBSPL, 124 dBSPL, 134 dBSPL, 144 dBSPL
Headroom (electrical):
6 dB (except for range 144 dB)
94 dBSPL
104 dBSPL 114 dBSPl
124 dBSPL
134 dBSPL
144 dBSPL
Inherent noise (typ.) acoust., typ. LIN, HP off:
15.5 dBSPL(A) 16 dBSPL(A) 16 dBSPL(A) 17.5 dBSPL(A) 24 dBSPL (A) 34 dBSPL(A)
S/NFS, acoust., typ., LIN:
84,5 dB(A) 94 dB(A)
104 dB(A)
112.5 dB(A) 116 dB(A)
111 dB(A)
Inherent noise (typ.) acoust., typ., ID, HP1 on:
13.5 dBSPL(A) 14 dBSPL(A) 14.5 dBSPL(A) 17 dBSPL(A) 24.5 dBSPL (A) 34.5 dBSPL(A)
THD+N (typ.) electr., Sin 1 kHz, 0 dB, LIN:
-77 dB -87 dB
-93 dB
-87 dB
-74 dB (0.013%) (0.0045%)0.0022%) (0.0045%) (0.02%)
CrossTalk (typ.) electr., Sin 1 kHz, 0 dB, LIN:
-119 dB
-122 dB
-122 dB
-121 dB
-107 dB
Linearity (typ.) electr., at 1 kHz, narrow-band: 109 dB
120 dB
122 dB
130 dB
Max. SPL:
145 dBSPL (<3 % distortion factor)
For aurally accurate recordings of sound events with very low sound pressure levels (e.g. in the IT industry), the HSU III.3
artificial head microphone is recommended.
Equalization modes:
Linear (LIN - no equalization), Independent-of-Direction (ID), Free-Field (FF), Diffuse Field (DF), User-specific (USER)
Directional pattern:
Corresponds to the structurally-averaged directional pattern of the human outer ear to IEC 959
12.2014 D1501e8
Subject to change
Technical Data
Type of microphones:
Filters: ½” electrostatic microphones, 200 V polarization voltage
Highpass (passive) 1st order, switchable 22 / 180 Hz (±10 %); highpass (active) 2nd order, 22 Hz (±10 %), all filters can be deactivated
Transmission range: 20 Hz - 20 kHz: ±0.15 dB; 3 Hz - 20 kHz: -3 dB/+0.1 dB; electr., without equalization
24 bit, oversampling 256-fold (fS < 50 kHz), 128-fold (fS > 50 kHz)
Sampling rate:
32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz (internal and external synchronizable via AES/EBU 32 kHz-96 kHz)
CompactFlash Supported CF card:
e.g. CompactFlash card for HMS IV, 4 GB
Analog Out (Multifunction)
Nom. output level: 1 Veff + 6 dB Headroom
Inherent noise, typ.: S/N: 98 dBFS (+ 0 dB)
Intermodulation (THD+N), typ.: -92 dB at 1 kHz
Headphone Out:
HD IV. 1 and HD IV. 2 are factory-equalized with standard equalizer curves
(FF, DF, ID); other equalizers for headphones supported by HEAD acoustics can be installed as needed.
Max. SPL, typ.:
116 dBSPL (LIN) - with HD IV.1
>100 dB (A)FS
Dynamic (S/NFS), typ.:
Digital Out:
AES/EBU, IEC II subcode selectable; 24 bit format; 16 bit format, noise shaping activable
USB interface:
To specification rev. 1.1. Compatible to USB 2.0 full speed; enables 2-head recordings up to 48 kHz (24 bit) and 96 kHz (16 bit)
HEAD Recorder and HMS Remote Control (via RS 232 or USB), Bluetooth® adapter BTA (in connetion with the HEAD Remotre Control App) or RC VI
System check:
Automatic hardware check for digital and analog component and A/D converter after power on
Pulse In:
Limit frequency: fS/2, 35 kHz max., TTL-compatible, inputs not elect. isolated; with adapter for electr. isolation (standard delivery items): 10 kHz TTL, 50 %
Power Supply:
Interruption-free switching between external and internal power supply. Smart charge electronics.
Extern DC Supply (typ.):
10 - 18 V, max. 34 V, vehicle on-board power supply or power pack
Intern DC Supply:
Battery NiMH, 12 V, 3.7 Ah (without memory effect)
Current, Output
Charging: Quick charging 4.5 h max., transition to pulsed trickle charging
Operating time with battery: 3 h (typ.) at recording to the CF (with remote control)
8 h (typ.) at recording via USB to the HD
Environmental conditions:
Operating temperature range: 0° C - 50° C (32° F - 122° F)
Storage temperature range: -20° C - 70° C (-4° F - 158° F)
Humidity: 0° C - 90° C (32° F - 194° F), relative humidity, not condensing
Thread mounting platform:
Mechanical Interface:
UNC 3/8“, Camlock (Series 911F)
Dimensions (WxHxD):
450 mm x 400 mm x 180 mm (18.31“ x 15.75“ x 7.09“)
5,65 Kg (12.46 Ib)
Radiated emission according to: EN 61326-1 (equipment class A)
Radiated immunity according to: EN 61326-1
Safety according to: EN 61010-1
Physical dimensions of the head designed according to ITU P.58, table 1 and comparable to ANSI 3.36, table 1.
Please note: Without HEAD Torso Box, some dimensions in P.58, table1 are not applicable.
The monaural frequency responses comply with ITU P.58, table 4 and to those that can be derived from ANSI 3.36, table 3.
External Power Supply PSH I.1
Input voltage:
Max. input current:
Output voltage/current:
12.2014 D1501e8
Subject to change
100 V - 240 V AC, 47 Hz - 63 Hz
1.6 A at 100 V AC
15 V DC / 4 A to XLR (4-pin)
Bluetooth® is a registered trademark of the Bluetooth®
SIG, Inc.; ICP is a registered trademark of the PCB
Group, Inc.
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