The Sony ECM-B1M is an ultra-compact camera-mount digital shotgun
microphone designed for mobile video creators working with Sony cameras
equipped with the Multi Interface Shoe. Released alongside the a7R IV,
which benefits from its built-in Digital Audio Interface, the ECM-B1M is
able to produce its best quality by delivering a digital audio stream
directly to the camera through the Multi Interface Shoe. Other Sony
cameras with the standard Multi Interface Shoe can still make use of the
microphone as there is a selectable digital/analog output.
The ECM-B1M is equipped with eight high-performance mic capsules and
advanced digital signal processing, providing three selectable
directivity patterns for a wide range of shooting and recording
situations. Plug-and-play operation makes the microphone easy to use
right out of the box—you can immediately start recording your YouTube
videos, Facebook Live streams, and interviews, at home, in the studio,
or on the go.
Sony Alpha a7R IV
Sony cameras equipped with Multi Interface Shoe
Three Directivity Modes
Advanced digital signal processing makes it possible to offer three
switchable directivity patterns: supercardioid, cardioid, and
Super Directivity in a Compact Mic
Eight high-performance microphone units work with a beam-forming
algorithm to provide extremely sharp directivity that effectively
rejects off-axis sound. All of this is achieved in a remarkably compact
microphone that is only 10cm in length.
Digital Sound with Low Noise
When connected via the Multi Interface shoe of a compatible camera that
features a built-in digital audio interface, the audio signal is
directly transferred to the camera in digital form so that no
degradation can occur. A simple switch also provides compatibility with
a wide range of cameras using an analog interface.
Effective Controls for Clear Sound
Record level control, analog output for compatibility with a wide range
of cameras, and an attenuator that makes it easy to set optimum signal
levels all add to this microphone's versatility.
A low-cut filter that cuts out subsonic noise is implemented through
digital signal processing, maximizing audio quality at the recording
stage and thereby reducing the need for complex post processing.
Mechanical Noise Suppression
An advanced shock and vibration suppressing design effectively minimizes
low-frequency or handling noise, which can degrade audio quality. The
absence of connecting cables also means that no noise can be transmitted
to the microphone mechanically via cables and connectors.
A fur windscreen is supplied to help reduce wind noise when shooting
Simply clip the microphone into the Multi Interface Shoe on a compatible
camera for direct power and audio connections without the need for extra
cables or batteries. Sony's Multi Interface Shoe offers intelligent
connectivity and control for a variety of accessories, providing maximum
flexibility and mobility.