OHTIÂ
AMBISONICS
MIXED ORDER AMBIX UPTO THIRD ORDER 16 CHANNEL RECORDINGS CAN BE PLAYED IN A BROWSER FOR BINAURAL LISTENING.
AmbisonicsÂ
Mixed order Ambix upto Third order 16 channel recordings can be played in a browser for binaural listening.
About OhtiÂ
First,second and third order Ambisonics are rendered to Binaural in several examples.
We also support mixed order ambisonics, with the possiblity for you to manually change the channel mixing matrix in the GUI.
We have AAC or Opus encoded media online, also WAV, FLAC or any other multichannel codec your browser and OS supports can be played from your local storage.
OHTI is verified to work with Firefox and Chrome - Media can be encoded as Ambix in 4,6,8,9 or 16 channels in ACN and SN3D. IOS is or have been limited to 6 channels.
The most recent activity have been to explore the possibilities of Ambix mixed order AAC encoded in 8 (or 6) channels for playback in browsers on most of the available web platforms. We want to allow you to listen to the difference between original Omnitone and Omnitone with MagLS rendering filters.Â
The MagLS filters are borrowed from IEM plug-in suite. We upsampled the Impulse responses  to 48kHz in Reaper to allow native sampling rate for Web Audio. We used the best resampling algoritm available in Reaper.
The resulting impulse responses was then converted to the same encoded format as the original IRs and we replaced/edited them into the omnitone javascript code ( as a quick and dirty action). This allows us to do a direct comparison of the decoding filters.
OHTI supports headtracking controlled by OSC.
Media is split in 2 segments if the encoder/decoder (JSAmbisonix example) chain makes in necessary.Â
About us
The team behind OHTI is
Bo-Erik Sandholm, Stefan Schreiber and Roger Sandholm.
The team joined in an effort to create a standard for a media format and a reference implementation of HOA ambisonics playback with head tracking in browsers on the majority of platforms.
Ohti Rev 2.5
ffmpeg 4 was used with fdklib to encode 6 and 8 channels in several mixed order versions of the TOA (examples in the third player below).
The OHTI Rev 2 player has a channel routing matrix for mixed order routing with GUI buttons to change to the orders we have encoded. Manual editing is possible in the matrix.
Incoming channel numbers is per line, horizontal position numbers is the output channels to the decoder.
If you cannot get the example to play the music, please restart the session at https://www.ohti.xyz
OHTI Rev 2.5 - Omnitone with MagLS IRs - Plays Local or Served Ambix sn3d files
Play Local or Served Ambix sn3d files.
Select left most button to open and close file selection panel - Button available to select playback for FOA, SOA or TOA also support for mixed formats.