Explainers

Sony ECM-AX10: First Eclipsa Audio-certified mic for phones

A compact USB-C microphone records spatial audio for vloggers and mobile filmmakers, with four omnidirectional capsules and no wires to the phone.

Sony has released a compact USB-C microphone called the ECM-AX10, which Popular Science reports is the world's first Eclipsa Audio-certified mic for smartphones. It weighs 24 grams.

The microphone uses four omnidirectional capsules to capture audio in three formats: Ambisonics, binaural, and stereo. That lets a user record the sense of space and direction for projects such as travel videos, festival footage, sports events or gear reviews.

For Ambisonics, the ECM-AX10 records four channels at 48 kHz with 32-bit float quality. Sony's Spatial Audio Video Tool can then produce a full-sphere Eclipsa Audio experience for YouTube, based on the open IAMF standard, Popular Science reports. Binaural recording at the same sample rate and 16-, 24- or 32-bit depth can translate to 360 Reality Audio for headphone-based 3D sound. Stereo recording works with general recording and video apps and any social platform.

The microphone includes a Selfie Mode for aligning the mic to the front or rear camera, an attenuator switch that drops sensitivity by 20 dBFS to prevent overloading, and noise cut controls. A 3-axis gyroscope and 3-axis accelerometer keep audio aligned with the video's orientation. A 3.5 mm minijack allows wired monitoring. The package also contains a windscreen, spacer sheet, shoe-mount microphone holder (cold shoe, no electrical contacts) and a USB-C extension cable.

  • Ambisonics
  • Eclipsa Audio
  • ECM-AX10
  • microphone
  • Sony
  • spatial audio

About Theo Park

Theo Park answers reader questions in Ask Us. He has taught middle-school science in Portland, Oregon, since 2012 and advises his school's rocketry club. He has a BS in biology from Oregon State University and a master's in teaching from Lewis & Clark College. He still has the model rocket he built in fourth grade.