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 a1Monitor by SSA Plugins is a Virtual Effect Audio Plugin. It functions as a VST Plugin and an Audio Units Plugin.
Product a1Monitor
Developer SSA Plugins
Price (MSRP)
Type / Tags AmbisonicsAmbisonics BinauralSpatial Audio
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
Downloads Released
Downloads Released
System Requirements
macOS 10.9+
Miscellaneous Information
Copy ProtectionOnline Activation (Challenge / Response)

Ambisonics requires a decoder to convert to loudspeaker or headphone signals that carry the spatial information. The a1Monitor allows you to listen to your Ambisonics signals over headphones via binaural 3D audio (HRTF technology) using first order Ambisonics. It also decodes first order signals to stereo loudspeakers, allowing you to distribute your immersive audio content via more traditional formats.

The a1Monitor allows you to listen using three different formats:

  • Binaural (headphones only) – first order decoding using the HRTFs generated from Google's Resonance Audio used by Google for YouTube 360. Personalised binaural rendering is available by loading a .SOFA file.
  • UHJ Super Stereo – advanced Ambisonics-to-stereo decoder with occasional "outside the speakers" effect (FIR and IIR filter implementations).
  • Cardioid stereo decoding – points two cardioid microphones left and right to capture the signals and send them to the left/right speakers.

The a1Monitor accepts four channels of SN3D/ACN (AmbiX) format Ambisonics. It outputs two-channel binaural or stereo audio.

Sampling frequencies: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 192 kHz.



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