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.
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.
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
