HRR I – Rotating reflector for changing the echo path for acoustic tests

HRR I is the HEAD acoustics motorized rotating reflector to influence the acoustic... 

HRR I is the HEAD acoustics motorized rotating reflector to influence the acoustic coupling between loudspeaker and microphones during acoustic tests. Thus, the reflector allows users to quickly change the acoustic echo path, a typical situation e.g. in hands-free communication – in a fully automated and repeatable way.

HRR I is suitable for any hands-free situation and any location as an automated and noise-free acoustic reflector. The aim of HHR I is to identify and subsequently optimize the system’s general communication quality and echo attenuation performance under quickly changing acoustic conditions.

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HRR I is the HEAD acoustics motorized rotating reflector to influence the acoustic coupling between loudspeaker and microphones during acoustic tests. Thus, the reflector allows users to quickly change the acoustic echo path, a typical situation e.g. in hands-free communication – in a... 

HRR I is the HEAD acoustics motorized rotating reflector to influence the acoustic coupling between loudspeaker and microphones during acoustic tests. Thus, the reflector allows users to quickly change the acoustic echo path, a typical situation e.g. in hands-free communication – in a fully automated and repeatable way.

HRR I is suitable for any hands-free situation and any location as an automated and noise-free acoustic reflector. The aim of HHR I is to identify and subsequently optimize the system’s general communication quality and echo attenuation performance under quickly changing acoustic conditions.

More Less

Highlights

  • HRR I enables to dynamically change the acoustic coupling between receiver and microphones
  • The motorized rotating reflector allows precise & fully-repeatable time-variation of the echo path
  • HRR I is used for acoustic tests of hands-free devices like smart speakers, conferencing devices, car hands-free and mobile devices with hands-free telephony function

Applications

  • Fully-automated dynamically changing the echo path for acoustic tests of hands-free devices like
    • smart speakers,
    • conferencing devices,
    • car hands-free and
    • mobile devices with hands-free telephony function.
  • Time variant echo path measurements e.g. according to Recommendations ITU-T P.1100, P.1110, and P.1120

 

Features

  • The rotating reflector can be applied in living spaces, test rooms, vehicles etc.
  • The motorized rotating reflector stands out with its noise-free motion with high precision.
  • In conjunction with appropriate ACQUA test suites (e.g. P.1100, P.1110, HQS-SmartHome), HRR I allows fully-automated operation.
  • Trigger pulses are stored with the audio file to achieve accurately timed and fully repeatable measurements.
  • The rotating reflector provides high mechanical robustness and excellent acoustic reflectivity up to high frequencies.
  • The motor of HRR I is mechanically decoupled from panel and pedestal to prevent undesired sound transmission from the power train.
  • The large aluminum baseplate of the rotating reflector allows steady positioning on flat surfaces.
  • Users can mount HRR I also on tripods via the integrated tripod socket to operate vertically as well as horizontally.
  • The rotating reflector communicates with the hardware platform labCORE over the RS-485 serial connection.
  • HRR I is a lightweight 40 cm × 30 cm (16 inch × 13 inch) panel.

Relevant Products

Telecom & Audio
ACQUA
(6810)
Telecom & Audio
ACQUA Options
(6811,6812,6819,6820,6821,6822,6836,6839,6840,6842,6843,6844,6848,6849,6852,6853,6854,6855,6856,6857,6858,6859,6865,6866,6867,6869)
Telecom & Audio
ACQUA Standards
(60000,60003,60004,60005,60009,60010,60013,60014,60018,60019,60020,60021,60023,60026,60028,60030,60032,60033,60035,60036,60038,60039,60041,60043,60044,60046,60047,60049,60055,60057,60058,60060,60062,60063,60064,60065,60066,60067,60068,60069,6711,6741,6742,6750,6770,6772,6777,6783,6788,6789,6794,6795,6796,6797,6798)
Telecom & Audio
HEAD acoustics Quality Standards (HQS)
(60025,60054,60051,60052,60015,6769,6786,6787,60011,60012,60001)
Modular & Scalable
labCORE
(7700)
Artificial Heads
HMS II.3
(1703,1750,1574,1357,1967)
Artificial Heads
HMS II.6
(1706,1574,1967,1750)
Background Noise Simulation
3PASS lab
(6690)
Background Noise Simulation
3PASS flex
(6695)
Background Noise Simulation
3PASS reverb
(6996)