| commit | 583d431947be540a33843d68feb5f1456671c298 | |
| author | Chris Robinson <chris.kcat@gmail.com> | |
| Fri, 10 Mar 2017 12:35:32 +0000 (10 04:35 -0800) | ||
| committer | Chris Robinson <chris.kcat@gmail.com> | |
| Fri, 10 Mar 2017 12:35:32 +0000 (10 04:35 -0800) | ||
| tree | 0f85220f58dd446d9732cb3a70bf7917585619c8 | treesnapshot (tar.gz zip) |
| parent | d9b1995e95ac3d838566500f1e5496ae71d832e0 | commitdiff |
Implement NFC filters for Ambisonic rendering
NFC filters currently only work when rendering to ambisonic buffers, which
includes HQ rendering and ambisonic output. There are two new config options:
'decoder/nfc' (default on) enables or disables use of NFC filters globally, and
'decoder/nfc-ref-delay' (default 0) specifies the reference delay parameter for
NFC-HOA rendering with ambisonic output (a value of 0 disables NFC).
Currently, NFC filters rely on having an appropriate value set for
AL_METERS_PER_UNIT to get the correct scaling. HQ rendering uses the averaged
speaker distances as a control/reference, and currently doesn't correct for
individual speaker distances (if the speakers are all equidistant, this is
fine, otherwise per-speaker correction should be done as well).
NFC filters currently only work when rendering to ambisonic buffers, which
includes HQ rendering and ambisonic output. There are two new config options:
'decoder/nfc' (default on) enables or disables use of NFC filters globally, and
'decoder/nfc-ref-delay' (default 0) specifies the reference delay parameter for
NFC-HOA rendering with ambisonic output (a value of 0 disables NFC).
Currently, NFC filters rely on having an appropriate value set for
AL_METERS_PER_UNIT to get the correct scaling. HQ rendering uses the averaged
speaker distances as a control/reference, and currently doesn't correct for
individual speaker distances (if the speakers are all equidistant, this is
fine, otherwise per-speaker correction should be done as well).