Multichannel output plogue bidule4/6/2023 The panning window is also fully mouse driven, and uses an equirectangular representation of the sphere to depict the azimuth and elevation angles of each source. audio to be encoded into 1-7th order Ambisonics, for example. Several presets have been included for convenience, which allow for 22.x etc. These Ambisonic signals describe a synthetic sound scene, where the spatial resolution of the sound scene is determined by the encoding order. AmbiENC #Ī bare-bones Ambisonic encoder which takes input signals (up to 64 channels) and encodes them into Ambisonic signals at specified directions. This plug-in was developed by Leo McCormack. The implementation also keeps track of the frequency-dependent gain factors for the omnidirectional component over time, which is then plotted on the user interface for visual feedback. The spatial properties of the original signals remains unchanged although, your perception of them after decoding may change. The gain factors are derived by analysing the omnidirectional component for each frequency band, which are then applied also to the higher-order components. The AmbiDRC plug-in is related to this publication.Ī frequency-dependent Ambisonic dynamic range compressor (DRC). This plug-in was developed by Leo McCormack and Archontis Politis. The benefits of the Mode-Matching decoding (MMD), AllRAD and EPAD approaches may be observed for non-uniform arrangements (22.x for example). a t-design), the included decoding approaches, except for AllRAD, all become equivalent. Note that when the loudspeakers are uniformly distributed (e.g. This feature may, of course, also be used creatively. those derived from physical/simulated microphone arrays), the decoding order may be specified for the appropriate frequency ranges energy-preserving (EP) or amplitude-preserving (AP) normalisation is used to maintain consistent loudness between different decoding orders. Furthermore, in the case of non-ideal Ambisonic signals as input (i.e. The popular max-rE weighting/spatial-tapering may also be enabled for either decoder. Several ambisonic decoders have been integrated, including the All-Round Ambisonic Decoder (AllRAD) and Energy-Preserving Ambisonic Decoder (EPAD). The plug-in employs a dual decoding approach, whereby different decoder settings may be selected for the low and high frequencies the cross-over frequency may be dictated by the user. The plug-in also permits importing custom HRIRs via the SOFA standard. For headphone reproduction, the loudspeaker audio is convolved with interpolated HRTFs for each loudspeaker direction (i.e. The loudspeaker directions can be user-specified for up to 64 channels, or alternatively presets for popular 2D and 3D set-ups can be selected. AmbiDEC #Ī frequency-dependent Ambisonic decoder for loudspeakers. This plug-in was developed by Leo McCormack, Archontis Politis, and Christoph Hold. It can also impose a diffuse-coherence constraint for the current decoder, as described in. The plug-in offers a variety of different decoding methods, including: Least-Squares (LS), Spatial re-sampling (SPR, virtual loudspeakers), Time-Alignment (TA), and Magnitude Least-Squares (MagLS). The plug-in also allows the user to import their own HRIRs via the SOFA standard. AmbiBIN #Ī binaural Ambisonic decoder for headphone playback of Ambisonic signals (aka spherical harmonic or B-format signals), with a built-in rotator and head-tracking support via OSC messages. The default HRIR set is an 836-point simulation of a Kemar Dummy head, courtesy of Genelec AuralID. More information regarding the structure of these files can be found here. json configuration files thus allowing for cross-compatibility between SPARTA and the IEM Ambisonics plug-in suite. Thanks to the efforts of Daniel Rudrich, the relevant plug-ins also support importing and exporting loudspeaker, source, and sensors directions via. You may hover your mouse cursor over any of the combo boxes/sliders/toggle buttons etc., in order to be presented with helpful tooltips regarding the purpose of the respective parameter. The maximum transform order for these plug-ins is 7. All Ambisonics-related plug-ins conform to the Ambisonic Channel Number (ACN) ordering convention and offer support for both orthonormalised (N3D) and semi-normalised (SN3D) normalisation schemes (note that the AmbiX format refers to ACN/SN3D). Currently, the plug-ins support sampling rates of 44.1 or 48kHz. Plug-in descriptions #Īll plug-ins are tested using REAPER (64-bit), which is a very affordable and flexible DAW and is the most recommended host for these plug-ins although, other multi-channel friendly hosts (such as MaxMSP, Plogue Bidule) are also known to work. Plug-in descriptions for the SPARTA suite.
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