ICST Ambisonics Site

johannes schuett @ICST

This is a work in progress blog for the ambisonics activity at the Institute for Computer Music and Sound Technology (ICST)

Ambisonic Channels Sequence

Index pageOctober 2008: The proposal documented here has engendered wide support. It is though intended for future ambisonic files (etc.). Pre-2009 files typically used a channel sequence of WXYZRSTUVKLMNOPQ (the table below can be used as a concordanc...

Standard Ambisonic Channel Numbers

for Orders 4 B-Format SequenceB-Format SequenceIt is intended to release the final standard under an appropriate licence (that allows use and copying, but which prohibits changes (that would confuse the result with the original) and requires attributio...

Standard Ambisonic Channel Numbers

for Orders 0 to 3 B-Format SequenceB-Format SequenceIt is intended to release the final standard under an appropriate licence (that allows use and copying, but which prohibits changes (that would confuse the result with the original) and requires attri...

Concordance between Standard Channel Numbers and Channel Letters

B-Format SequenceB-Format SequenceIt is intended to release the final standard under an appropriate licence (that allows use and copying, but which prohibits changes (that would confuse the result with the original) and requires attribution. For the mo...

B-Format Sequence for Ambisonic Channels

The order in which to present ambisonic channels has been the subject of various approaches. These pages present a standardised method, where each channel is given a unique number out of a set of consecutive integers, starting with 0 (zero). Whilst ‘or...

Ambisonic A-format Channel Ordering

First Order Mic Core Sound's TetraMic has four capsules at:1ULF2DRF3DLB4URBsee also: Ambisonics MicrophoneStandardisation, firstly as to orientation, then as to channel ordering is obviously desirable. The problem of how to create a logical linear sequ...

Ambisonic G-format Channel Ordering

Ambisonic decoders produce ‘speaker feeds’. Typically these are for local use (to be fed to a sound card). Even so, a standard order will minimise user configuration. G-format files can also be made and distributed. This breaks the prime utility of amb...

Ambisonic Channel Formats

Index pageAudio files associated with ambisonics are multi-channel files. The channels can though be of any number. To allow transfer of files (or data streams) from one user to another, or from one software application to another, it is essential that...

Notes on Spherical Harmonic Equations

Index page GlossaryThere are various possible ways of presenting equations for spherical harmonics. These notes try and explain the choices made here. Firstly as the interest is in ambisonic audio only, real (as against complex) equations are presented...

Ambisonic Channel 143

B143 Channels Sequence Glossary November 2008: The format documented here is intended for future ambisonic files (etc.). Pre-2009 files typically used a channel sequence of WXYZRSTUVKLMNOPQ (the index page can be used as a concordance), and FuMa chan...
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