
The HDL300 system is available in 35 countries, with more coming. Learn more on our Find a distributor page.
AUDIO CONFERENCING / HDL300 SYSTEM
Powerful microphone and speaker
bar for mid-size spaces
US pricing
Get full-room audio coverage in all your mid-sized spaces with a wall-mounted microphone and speaker bar. The HDL300 audio conferencing system ensures voices are picked up in spaces up to 25' x 25' (7.6 x 7.6 m), making it ideal for meeting rooms, classrooms and more.
Go ahead and reconfigure your space. The HDL300 system with continuous autocalibration has you covered.
Let your board meetings be more dynamic. With the HDL300, you’re free to move anywhere in the room.
Unconventional room arrangements may challenge traditional systems, but not the HDL300 system.
Boost student participation and engagement with true full-room audio coverage.
Our patented technology fills a room with thousands of virtual microphones so everyone can be heard everywhere in a mid-size space. It also enables unprecedented simplicity, because one easy-to-install microphone and speaker bar gives you the coverage and audio performance you need.
See the difference in audio coverage between Microphone Mist technology and traditional beamforming systems.
Learn more on how they compareThe HDL300 system has the key audio conferencing system elements in an integrated wall-mounted unit. You get the audio performance you need without desktop clutter or an expensive, intrusive installation of a mic array and speakers.
No separate DSP is required as all processing is integrated into the device.
The processor drives 12 omnidirectional microphones to deploy 8,192 virtual microphones.
Two 20-watt speakers provide crisp sound for all your audio conferencing and playback needs.
Available in two neutral colors to complement any room.
Nureva Pro is a value-added subscription service, offering everything you need to keep your spaces running smoothly. It includes a 3-year or 5-year extended warranty, advance unit replacement and expanded access to technical support. Nureva Pro also gives you access to enhanced features in Nureva Console, including email notifications, historical analytics and insights data.
Nureva Console
Manage your HDL300 and all your Nureva® audio conferencing systems from anywhere with Nureva Console, our secure cloud-based platform. Check device status, fine-tune audio settings, adjust the microphone pickup zone, activate voice amplification, update firmware and more. You can also access the Nureva Developer Toolkit – cloud-based APIs that let you create integrations for streamlining your workflows.
Powerful onboard system processors
Continuous autocalibration
Acoustic echo cancellation
Built-in dynamic sound masking
Position-based gain control
Primary audio source for video playback
Single Ethernet cable to microphone and speaker bar
Integrated, multicolor status LED
12 - low-noise omnidirectional MEMS
Frequency response at 94 dB SPL 100Hz to 7 kHz
Total harmonic distortion (THD) 0.25% (typical)
2 - 20W 4"aluminum cone
Acoustic output (hardware capable): 91 dB-SPL @ 1m
Total harmonic distortion (THD) <3%
1 - USB 2.0 interface to computer, type B
1 - Auxiliary out 3.5 mm single-ended stereo jack
1 - Auxiliary in 3.5 mm single-ended stereo jack
2 - Connections to microphone and speaker bars RJ-45
1 - Input jack for power supply
1 - USB 2.0 interface to computer, type B
1 - Input jack for power supply
Certified for Microsoft® Teams. Plug and play compatibility with UC&C platforms including Zoom, Google MeetTM, GoToMeeting®, Cisco Webex®, Blue Jeans, StarLeaf, Lifesize®, RingCentral, Fuze Rooms and more
Easy integration with third-party solutions such as Barco ClickShare, lecture capture systems and headset microphones with Voice Amplification Mode
Windows® 8 and 10
Mac® OS X® 10 and 11
(Big Sur and Catalina)
Power rating: universal switching 100-240V AC, 50-60Hz
Power consumption: standby <2.5W, operational <25W
Operating temperature: 0° C to 40° C
(32° F to 104° F)
Storage temperature: -20° C to 70° C (-4° F to 158° F), humidity 5–90% (noncondensing)
Automatic firmware updates
Remote management features available through cloud-based Nureva Console
FCC Part 15, Class A; ICES-003, Class A; CISPR 32 (EN55032), Class A; CISPR 35 (EN55035); CISPR24 (EN55024)
UL 62368; CAN/CSA-C22.2 NO.62368; IEC/EN62368; AS/NZS 62368; UL 60950; CAN/CSA-C22.2 NO.60950; IEC/EN60950; AS/NZS 60950
RoHS, REACH, PoP (Persistent Organic Pollutants), WEEE compliance, California Proposition 65, EPA (TSCA-Toxic Substances Control Act) Restrictions
Width: 60.0" (152.4 cm)
Height: 5.91" (14.9 cm)
Depth: 3.5" (9.0 cm)
Weight: 18.0 lb. (8.2 kg)
Width: 6.5" (16.5 cm)
Height: 1.41" (3.6 cm)
Depth: 4.31" (10.9 cm)
Weight: 1.5 lb. (0.7 kg)
Width: 64.75" (164.4 cm)
Height: 10.63" (27.0 cm)
Depth: 9.5" (24.1 cm)
Weight: 28.0 lb. (12.7 kg)
Integrated microphone and speaker bar
Connect module, white
Connect module mounting bracket, white
Country specific power cable
Ethernet cable, CAT6 SSTP, 50' (15 m), Class 3 rated, black
USB Type A-B cable, 6' (1.8 m), VW-1 rated, black
Infrared remote with 2 AAA batteries
Documentation
Integrated microphone and speaker bar and connect module – Standard 2-year limited hardware
Accessories and cables – 30 days
Black: HDL300-B
White: HDL300-W
Find our resources, downloads and software, or connect with our support team for more assistance.
The HDL300 system is available in 35 countries, with more coming. Learn more on our Find a distributor page.
Nureva’s patented Microphone Mist technology fills a room with thousands of virtual microphones (an HDL300 system deploys up to 8,192). Each virtual microphone is an individual “pickup point” created when two or more physical microphones (there are 12 in an HDL300) work together to focus their sound pickup on a distinct zone. Microphone Mist technology listens to each virtual mic simultaneously and optimizes each one for natural conversations.
When two people talk at the same time, the HDL300 system focuses on the stronger signal (the louder voice), while the other voice drops into the background. The effect is as if you were standing in the room close to the louder talker, but are also aware that someone else is speaking at the same time.
The system monitors and adjusts to the location of a talker 10 times per second.
Yes, but please note that many UC&C systems do not provide optimal stereo performance.
Yes. The HDL300 system is recognized as a standard USB audio device and works with most UC&C platforms out of the box. The HDL300 is certified for Microsoft Teams.
The HDL300 system will work with any system that accepts clean, echo-canceled input for audio. The product supplies audio through USB or 3.5 mm auxiliary in and out ports on the connect module.
You can install the HDL300 system in less than an hour – no specialized technicians are required. The microphone and speaker bar hangs on the wall on two screws and connects to the connect module via a PoE cable (included). The connect module can also be mounted on the wall, under a table or wherever it is convenient. It is connected to a power source and to your computer via a USB cable (included).
No. Like all Nureva audio systems, the HDL300’s Microphone Mist technology autocalibrates at set up and continuously during use. It senses and adjusts to changes in room characteristics automatically. No technician is required to set up or maintain the system.
HDL series
Hear the HDL300 system, and have all your questions answered in just 15 minutes. What to expect
Contact us, and we’ll find a time that fits your schedule.
There are several important areas of differentiation between the leading types of microphone technology for mid-size spaces. Read on to learn how traditional beamforming technology compares to Nureva’s new Microphone MistTM technology when it comes to the underlying technologies, directional vs. positional pickup, low-res vs. high-res pickup and how each handles acoustic return echo.
Traditional audio conferencing systems for mid-size spaces most often employ beamforming technology. Sound is picked up in defined beams generated by the mic array and pointed at fixed positions around the meeting room table. If talkers stay within the beams, pickup can be adequate. But if they move outside the beams, to present at a display or move around the space, they may enter dead zones where pickup is compromised. Moving between beams can also be problematic – the audio heard by remote team members may rise or drop off noticeably as the speaker’s voice transitions between beams. Another issue is that all the sounds in each beam are picked up equally – the sounds you want to hear like talking, as well as undesired sounds like typing or fans. This can mean an annoying or even fatiguing experience for remote team members.
All Nureva® audio conferencing systems feature patented Microphone Mist technology, which fills a room with thousands of virtual microphones or individual “pickup points.” The HDL300 system, which is designed for mid-size spaces up to 25' x 25' (7.6 x 7.6 m), deploys up to 8,192 virtual mics in room so there’s always one close by – no matter where a person moves in the space or which direction they face. You get true full-room pickup with no audio dead zones. Thanks to advanced processing power, Microphone Mist technology continuously monitors each pickup point, focusing on the predominant sounds, such as talkers, and optimizes them for clear, natural conversations between in-office and at-home team members. While conventional systems use “post-sound” processing to handle unwanted noises from HVAC, displays or computer fans, Microphone Mist technology uses a “pre-sound” approach. It identifies consistent unwanted noise sources and simply stops picking them up. Remote team members get clear, consistent audio that makes them feel like they’re in the room with their fellow team members back at the office.
There are two main approaches to how microphones pick up sounds in a mid-size space: directional pickup, which may be thought of as the traditional approach, and positional pickup, a groundbreaking new approach. Here’s a look at both:
Traditional
With many beamforming systems, microphone pickup is determined solely by the direction each mic is aimed. This is significant because the automatic gain control circuit for each mic is not able to identify a talker’s distance from the mic. The system also might not be able to differentiate talkers from other sound sources (e.g., HVAC, typing) in a beam so that desired and undesired sounds get equal treatment. Also, systems using directional pickup often require a higher level of processing to be added to a given signal.
New
The HDL300 system with Microphone Mist technology fills a mid-size space with thousands of virtual microphones that tell the system the best sound source of each talker in the room – whether they are stationary or moving about the space. This enables position-based gain control (PBGC), which allows the system to make specific optimizations to the microphone system while also enhancing the system’s ability to process each sound source in the room. The result is more natural conversations because the system appropriately adjusts each talker’s gain while keeping ambient noise at a quieter and more consistent level.
One of the most significant factors in the quality of conference call audio is how well a system manages the level of each talker versus background ambient sounds and electronic hiss. Getting the right mix is typically achieved by adjusting (lowering or boosting) the gain on each audio signal. There are two main gain control strategies: automatic gain control (AGC) and a new approach, position-based gain control (PBGC).
Traditional
AGC is the approach used in most conventional audio conferencing systems. AGC keeps the audio output level within a targeted minimum-maximum range by adding gain to the signals from talkers who speak more quietly and reducing gain on the signals from talkers who speak more loudly. But AGC on a microphone treats the audio signal holistically – increasing the signal from the talker and ambient sounds equally. When it raises the talker’s level, it also raises the level of the ambient noise floor for an unsatisfying listening experience.
New
PBGC describes Microphone Mist technology’s ability to listen simultaneously to each of the thousands of virtual microphones it deploys in a room – these are the “positions” in PBGC. Identifying the position of each sound source, Microphone Mist technology adjusts the gain so talkers can be heard clearly while the level of ambient noise is kept lower and more consistent for clearer, natural-sounding conversations.
Acoustic return echo is the effect of callers hearing their own voices in their headset or speaker delayed in time after they have spoken. It’s a common problem that can make for a distracting and even annoying audio experience. Most microphone systems try to solve this issue with some form of echo cancellation technology that must be calibrated to the unique features of a room. Shape and size, surface and furniture characteristics and number and position of people all come into play. There are two main calibration strategies for echo cancellation:
Traditional
Most conventional systems (especially complicated in-ceiling installations) deal with acoustic return echo with a manual approach involving a technician calibrating the echo canceller system to the distinct acoustic properties of a room. A short tone (the calibration signal) is initiated through the speaker system and then picked up by the microphone system. The technician measures the acoustic return echo delay and uses that data to calculate echo canceller parameters. It’s a process that can be time-consuming and intrusive. And since the room must be quiet during the process, it cannot be performed while a meeting space is in use – it must be taken offline. Additional changes to the room may also impact echo canceller performance, necessitating an additional manual recalibration of the system.
New
Continuous autocalibration, a proprietary process built into Nureva’s Microphone Mist technology, solves these issues. Continuous autocalibration gives a Nureva audio system the power to measure the acoustic environment of a room in real time for each microphone and speaker combination. It is able to do this by using a constant sound mask-like signal that, if heard at all, is perceived as the background ambient noise common in most commercial environments. Continuous autocalibration lets the echo canceller automatically deliver consistent performance throughout any call without the need for a technician or taking a room offline.
You’ve seen how a camera with higher resolution delivers a clearer picture than one with lower resolution. A similar principle applies to audio. The level of spatial resolution in microphone pickup also matters. Here’s why spatial resolution works in audio:
Traditional
Traditional approaches for microphone coverage for mid-size spaces, such as beamforming technology, subdivide a room into large zones. If a beamforming array has three zones, you get low spatial resolution information. And with a small number of large zones to cover, traditional systems are not able to discriminate individual sound sources within each zone. This means its ability to optimize individual sound sources in a zone for the correct gain setting, noise filtering and overall audio signal optimization is diminished.
New
The HDL300 system’s Microphone Mist technology fills a room with up to 8,192 virtual microphones – meaning it subdivides the space into thousands of spatial bubbles, which in turn means higher spatial resolution of audio signals. The system can isolate and zoom in on individual talkers, giving it the audio information it uses to optimize both acoustic microphone pickup performance and post-processing of the audio signal.
At Nureva, we keep things simple. It’s why installing the HDL300 system is an easy procedure that usually takes less than an hour. Hang the microphone and speaker bar on the wall (with just two screws and plugs), run an Ethernet cable to the connect module and then a USB cable to a computer with UC&C software and you’re ready.
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*Price represents the manufacturer’s recommended selling price, in US currency, in the United States. Price excludes applicable taxes and shipping. Dealers may sell for a different price. Dealers may charge additional administration and installation fees, which may vary by dealer. Prices in other countries will differ. Please contact your local dealer or Nureva Inc. for a detailed quote. Equipment, specifications and price are subject to change without notice.