Yamaha Ceiling Array Microphone RM-CG

A ceiling array microphone equipped with unique audio signal processing technology that enables high-quality communication

  • Standard network audio support for “Dante”
  • “Multi-beam tracking” that scans for human voice and track simultaneous speech allowing for lively conversations
  • Delivers high intelligible voice with unique audio signal processing technologies
  • Utilizes one PoE+ network cable connection avoiding troublesome wiring and enabling audio control via Dante
  • Supports 3 types of mounting methods for use with a variety of ceiling conditions
  • Automatic detection and configuration with Remote Conference Processor RM-CR



RM-CG is a ceiling array microphone equipped with Multi-beam Tracking capable of tracking the simultaneous speech of multiple speakers. Since these beams detect and track the direction of the sound source simply by the speaker speaking, there is no need to adjust the position or range of sound collection in advance.



Users can now pre-set RM-CG’s beam-tracking zones using a color-coded system in the Web UI.

– Green represents the overall pick-up coverage of the microphone.

– Blue delineates “focus areas” for more localized sound pick up (up to 2 areas)

– Red creates an “exclusion area”, cancelling audio pick-up where specified (up to 2 areas)




As well as being equipped with all kinds of signal processing technologies such as Adaptive Echo Canceller, Noise Reduction, Dereverberation, Automatic Gain Control, and Auto Mixer, when combined with Yamaha’s original HVAD (Human Voice Activity Detection) technology, this ceiling array microphone offer clear, high-quality voice reproduction.


* RM-CG has audio signal processing technology that supports the conversational experience


Outstanding beamforming technology

Beamforming is a technology by which a directivity response pattern is formed using multiple microphones. The RM-CG can form up to four beams simultaneously. Narrowing the directivity of each beam and centering the beam on each speaker’s mouth enables this system to pick up sound while avoiding the negative impact of reverberation or ambient noise. Moreover, tracking with four beams offers the convenience of not having to set the sound collection range, and it prevents clipping of sound when a person begins to speak.


Adaptive Echo Canceller for Multi-beam Tracking

The Echo Canceller estimates the overall sound (including reflected sound) transmitted between speaker and microphone and reduces it (including reflected sound), thus preventing the voice from echoing back to the speaker. When the overall sound transmission is estimated perfectly, echo will not be generated. However, if the transmitted sound changes rapidly, the system will not adapt quickly enough and the likelihood of echo will increase. As mentioned above, the directions of the Multi-beam Tracking are constantly changing, but Yamaha’s Echo Canceller uses an algorithm capable of responding quickly to any changes. As a result, high echo cancellation performance is achieved despite the use of Multi-beam Tracking.


Noise Reduction greatly reduces ambient and background noise

Noise Reduction used in teleconferencing systems estimates the noise contained in a signal from the signal itself and attenuates its components. It enables clear sound collection by detecting steady noise and attenuating only those components.


Dereverberation provides high-quality sound even in reverberant spaces

The RM-CG analyzes the components of picked-up sound in real time, then estimates and removes any unpleasant reverberation components in the sound based on an acoustic model, enhancing the clarity of the picked-up sound.


Automatic Gain Control delivers clear, pleasant conversation to the other parties

The RM-CG reduces the fluctuation in voice levels sent to other parties by automatically adjusting the gain depending on the levels of various voices picked up. In addition, HVAD (Human Voice Activity Detection) works to adjust the voice level only. In this way, HVAD prevents unpleasant sounds from being generated without unnecessarily raising the level of unwanted sound.


Automatic mixing using unique algorithms

General gain-sharing automatic mixing is often used when a microphone is mounted close to the speaker. When applied to the RM-CG, it tends to mix the four beams in a similar way. For this reason, the RM-CG uses automatic mixing optimized for the installation conditions, which demonstrates strong performance even in environments such as ceiling installations or rooms with a lot of reverberation.


Compatible with the Dante audio network standard, enabling audio/control signals to be transmitted via a single network cable. Since the power supply is PoE-driven, not only the Dante audio signal and control signal but also the power supply can be supplied from the network switch via the same cable.


In medium-sized conference rooms accommodating about 10 to 20 people, coverage can be expanded by connecting two Ceiling Array Microphones.


3 mounting methods for a variety of ceiling environments

With the increasing number of conference rooms and multipurpose rooms that emphasize design as well as function, ceiling array microphones need to adapt to all kinds of installation environments. Choose your installation method, including ceiling mounting using the RM-CG’s standard metal fittings as well as installation using VESA mounting metal fittings for ceiling suspension or hanging with wires.

3 mounting methods for a variety of ceiling environments 3 mounting methods for a variety of ceiling environments 3 mounting methods for a variety of ceiling environments


With the ADECIA ceiling solution using the RM-CR Remote Conference Processor, voice line settings and detailed adjustments are performed automatically, which easily resolves several difficult problems associated with troublesome wiring, establishing network environments, and optimizing acoustics for each room environment.

It is also possible to adjust the RM-CG’s internal signal processing depending on the room environment and conferencing system.


No specialized programming skills are required. An intuitive interface makes it easy to create faders for volume control and mute on/off of RM-CR. And position photographs or other graphic elements on the tablet screen as required to create original control panels that are ideally suited to conference audio controls. In addition, ProVisionaire Touch and ProVisionaire Control can control the MRX series processor and other Yamaha Pro Audio equipment. It is easy to combine those parameters onto the one screen. ProVisionaire Control and MRX7-D can control 3rd party networked equipment using commands of Ethernet protocols, UDP, or/and TCP.

DimensionsW560 mm × D560 mm × H90 mm (Includes protrusion/microphone panel: 22 mm)
Weight5.6 kg
Power RequirementsPoE (IEEE 802.3af), DC 48 V
Maximum Power Consumption7.2 W
In OperationTemperature0°C – 40°C
Humidity30% – 90% (no condensation)
StorageTemperature-20°C – 60°C
Humidity20% – 90% (no condensation)
IndicatorFront Indicator (Mute/Unmute & Status), Network Port Indicator
MountCeiling mount (can’t replace a grid ceiling panel), Wire mount, VESA mount
Maximum Device Number with RM-CR4 (Connection with other than RM-CR is not limited to this device)
AccessoriesConstruction description, (Guarantee), Grille x 1, Screws for grille (M3 x 8 mm) x 5*, Screw cover x 4, Cutting template x 1, C ring x 1, Screws for C ring x 2, Hanger angle x 1, Screws for hanger angle (M4 x 20 mm) x 5*, Terminal Cover x 1, Safety wire x 1, Binding band x 1, Clamp plate x 2 *Including a spare respectively
Dust ProtectionIP5X for dust protection (with terminal cover)
Plenum RatingUL2043 (with terminal cover)
Network Specifications
Ether1Dante, Remote Control, WebUI, PoE
Cable RequirementsCat 5e or higher (STP)
Audio Specifications
Audio I/ODante1in/2out
Sampling Rate48 kHz
Bit Depth24 bit
Latency58 [ms] (including signal processing)
Frequency Response160 Hz – 16 kHz (-10 dB)
Maximum Input Level of SPL (0dBFS)117.8 dB SPL
Self Noise-0.8 dBA SPL
SN Ratio (Ref. 94 dB SPL at 1 kHz)94.8 dBA
Sensitivity-23.8 dBFS/Pa
Dynamic Range118.6 dBA
Signal ProcessingMulti Beam Tracking, Adaptive Echo Canceler, Noise Reduction, Dereverberation, Auto Mixer, Auto Gain Control, Parametric EQ, Output Gain