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* Move hrtf.cpp/h to coreChris Robinson2021-04-221-1468/+0
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* Avoid using config methods in hrtf.cppChris Robinson2021-04-221-12/+2
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* Move helpers.cpp to coreChris Robinson2021-04-221-1/+1
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* Move declarations to a more appropriate headerChris Robinson2021-04-221-1/+1
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* Use per-HRIR delay alignment for B-Format-to-HRTFChris Robinson2021-04-091-6/+11
| | | | | | | | | | | | | For HOA signals, the number of responses used with slightly varying delays causes noticeable attenuation in the higher frequencies because of destructive phase interference. This is not a result of minimum phase alignment (attempts to compensate for minimum phase had negligible results), nor does it affect first-order signals (which only has 4 unique responses on each side). This alternate alignment is only used when doing second-order rendering for HRTF output, which is not the default with HRTF. It's likely not very ideal, but it's necessary to prevent second-order rendering with HRTF from sounding muffled.
* Use spans instead of references to arraysChris Robinson2021-02-061-2/+2
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* Use if constexpr when possibleChris Robinson2021-01-221-2/+2
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* Use a standard bitset for bitfield flagsChris Robinson2021-01-221-0/+1
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* Make the endian test more C++-likeChris Robinson2021-01-211-2/+2
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* Avoid global constexpr arraysChris Robinson2021-01-211-1/+1
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* Avoid extra copies/work when reading HRTF dataChris Robinson2021-01-201-8/+12
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* Avoid duplicating an inline template functionChris Robinson2021-01-061-21/+4
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* Properly trace the new HRTF delay for the B-Format decoderChris Robinson2021-01-061-2/+2
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* Use a template to read integers with endian awarenessChris Robinson2021-01-061-70/+83
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* Add a crossover frequency field for the deviceChris Robinson2020-12-261-2/+2
| | | | | | Used when upsampling low-order ambisonic signals to higher order. Rather than a hardcoded 400hz, it ensures a consistent crossover point when an ambdec configuration is used. It can also allow for an alsoft config option.
* Use more constexpr variables instead of macrosChris Robinson2020-12-251-89/+89
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* Move logging to coreChris Robinson2020-12-171-1/+1
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* Don't modify the IR size of loaded HRTFsChris Robinson2020-12-111-10/+4
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* Change some macros into constexpr variablesChris Robinson2020-12-041-2/+2
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* Move the filters to coreChris Robinson2020-12-041-1/+1
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* Avoid AL types in hrtf.cpp/hChris Robinson2020-11-221-80/+77
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* Silence warning about unused return valuesJan Niklas Hasse2020-10-201-2/+2
| | | | | warning C4834: discarding return value of function with 'nodiscard' attribute
* Remove extraneous parenthesisChris Robinson2020-08-281-9/+9
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* Remove dead codeChris Robinson2020-06-301-92/+13
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* Use a better type for array accessChris Robinson2020-06-071-3/+3
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* Round the scaled HRTF delaysChris Robinson2020-05-211-1/+3
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* Use an enum for FamCountChris Robinson2020-05-191-3/+1
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* Apply the ambisonic HF scaling in real-time with HRTFChris Robinson2020-05-191-12/+18
| | | | | | | | | Rather than applying the HF scale to the IRs necessitating them to be truncated along with increasing the IR size, it can be applied to the input signal for the same results. Consequently, the IR size can be notably shortened while avoiding the extra truncation. In its place, the delayed reversed all-pass technique can still be used on the input for maintaining phase when applying the bandsplit/hfscalar filter to the input signal.
* Make BuildBFormatHrtf a member of DirectHrtfStateChris Robinson2020-05-011-13/+12
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* Clean up some more unnecessary uses of AL typesChris Robinson2020-04-081-8/+8
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* Avoid some pre-C++14 workaroundsChris Robinson2020-03-221-2/+2
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* Use an intrusive_ptr for the device's HrtfStoreChris Robinson2020-03-011-8/+8
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* Update the MHR formatChris Robinson2020-02-111-2/+177
| | | | | | | | This update removes the 16/24-bit sample type enum, now always being 24-bit (other than a very small size saving, there's no practical benefit to storing 16-bit samples). This also reverses the field storage, so no on-load fixup is needed, and stores the IR delays with 2 bits of sub-sample precision, allowing for slightly better timing (after resampling, blending, etc).
* Use std::array and span for the HRTF delaysChris Robinson2020-02-081-1/+1
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* Try harder to find the closest HRIR for the B-Format decoderChris Robinson2020-01-261-16/+23
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* Return immediately on error when loading HRTFsChris Robinson2020-01-131-48/+23
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* Make a separate function for duplicate codeChris Robinson2020-01-131-52/+25
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* Use the Field and Elevation structs directly when loadingChris Robinson2020-01-131-113/+113
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* Don't assume the total length of certain arraysChris Robinson2020-01-131-6/+6
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* Use a span for a fixed-size array referenceChris Robinson2020-01-131-2/+2
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* Add missing includeChris Robinson2020-01-121-0/+1
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* Scale the resampled HRTF delays if they exceed the maxChris Robinson2020-01-121-18/+29
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* Warn when resampled HRIR delays get clampedChris Robinson2020-01-121-2/+16
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* Blend the whole IR for the interpolated HRIRChris Robinson2020-01-121-7/+4
| | | | | The SIMD mixers may use a few more elements beyond the irSize, so not limiting the blend to that size can slightly improve the quality for resampled HRIRs.
* Fix blending for the right IR delayChris Robinson2020-01-081-1/+1
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* Don't blend the B-Format decoder HRIRsChris Robinson2020-01-071-52/+25
| | | | | | | | Though fine in theory, an issue arises with extra phase interference since the frequency phases aren't aligned for each response. It would be better to do the blending before minimum phase reconstruction, where it can blend just the frequency magnitudes, essentially allowing makemhr to increase the resolution of the dataset.
* Combine identical arraysChris Robinson2020-01-041-6/+4
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* Use an array type for the HRIR delay pairChris Robinson2019-12-301-9/+3
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* Load the HRIRs directly into HrirArraysChris Robinson2019-12-301-34/+45
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* Avoid declaring a variable earlyChris Robinson2019-12-301-3/+2
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