Shotgun Microphone Sony ECM-B1M

Three directivity modes
Advanced digital signal processing makes it possible to offer three switchable directivity patterns in one versatile microphone: super-directional, unidirectional, and omnidirectional.

Super-directivity in a compact mic
Eight high-performance microphone units work with a newly developed beamforming 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 99.3mm in length.

Great 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 analogue interface.

Mechanical noise suppression
An advanced shock and vibration suppressing design effectively minimises low-frequency, or handling, noise that 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.

Effective filter for clear sound
A low-cut filter that cuts out subsonic noise is implemented through digital signal processing, maximising audio quality at the recording stage and thereby reducing the need for complex post processing.

Cable-free connection
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 for α system shooting.

Wind screen supplied
The ECM-B1M is supplied with a fur type wind screen that can reduce wind noise when shooting outdoors.

Essential controls
Record level control, analogue 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. This level of control can contribute to smooth, stress-free post production.

Specifications:

Type: Back electret condenser type

Frequency response: 40 Hz to 20,000 Hz

Pickup pattern: Super-directional / unidirectional / omnidirectional (selectable)

Front sensitivity *1: -20 dBFS (0.1 Pa, 1 kHz)

Intrinsic noise *1 *2: 14 dB SPL or less (0 dB = 2×10-5 Pa)

Wind noise *1 *3: 50 dB SPL or less (without the wind screen attached), 30 dB SPL or less (with the wind screen attached)

Maximum input sound pressure level: 120 dB SPL*1 *4

Dynamic range *2: 106 dB or more

Operation temperatures: 0 °C to 40 °C (32 °F to 104 °F)

Storage temperatures: -20 °C to +55 °C (-4 °F to +131 °F)

Dimensions: Approx. 27.4 mm × 81.8 mm × 99.3 mm; 1 1/8 in. × 3 1/4 in. × 4 in. (Width/Height/Depth) excluding the wind screen and projecting parts

Mass: Approx. 77.3 g (2.8 oz)

*1 Acquired by setting the AUTO/MAN switch and the ATT switch to “AUTO” and “10dB,” respectively.

*2 Acquired by setting the DIGITAL/ANALOG switch to “DIGITAL.”

*3 Equivalent sound pressure level value converted from the average value of the noise that is output from the microphone when a wind velocity of 2 m/sec. is applied. (0 dB = 2×10 -5 Pa)

*4 Equivalent sound pressure level value converted from the input level value that is acquired when 1% waveform distortion is produced by 1 kHz output signals from the microphone. (0 dB = 2×10 -5 Pa)