Wave 3 objects: ambitap.panbin~ and ambitap.distance~#3
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mono + (azimuth, elevation) -> stereo through a per-direction HRTF, without an ambisonic bus — no order-limited blur, complements encode~ -> binaural~ at small source counts (ROADMAP Wave 3 item 1). Reconstructs the per-ear HRIRs the same way binaural_renderer's probe_response does internally (SH basis at the direction weighting the built-in order-5 KEMAR SH FIRs), resampled to the host rate, into one partitioned_convolver per ear. Direction changes are click-free: the control thread builds a new convolver pair and publishes it through a lock-free single-slot handoff; the perform routine adopts it at a block boundary, crossfades one block between old and new pairs, and parks the retired pair for the control thread to reap — the audio path never allocates or frees. gitignore: build/ -> build*/ (per-track build dirs). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012VeadvCRUHJdneFNwRbFAM
…/CI for 14 objects ambitap.distance~ bundles the object-placement distance cues for an HOA bus (ROADMAP Wave 3 item 2): Doppler delay -> 1/r gain (attenuation exponent, 0.1 m clamp) -> air-absorption one-pole low-pass -> near-field compensation via the library's new dsp::nfc (per-order shelving, Daniel's formulation). Delay comes first so distance modulation yields the physical pitch glide before level/tone shaping; NFC last so the shelf is not fed through the time-varying delay interpolation. Distance-driven parameters slew with the same 1/1024 one-pole as doppler~. README: document panbin~ and distance~, mark Wave 3 items 1-2 code complete (xtc~/room~ remain gated on the library's docs/PERCEPTUAL-VERIFICATION.md). CI bundle count 12 -> 14. Requires AmbiTap main with dsp/nfc.h — submodule bump follows once the library PR merges. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012VeadvCRUHJdneFNwRbFAM
Brings in dsp/nfc.h (near-field compensation, double-precision section state) and docs/PERCEPTUAL-VERIFICATION.md — ambitap.distance~ requires the former. All 14 externals compile against the bumped pin. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012VeadvCRUHJdneFNwRbFAM
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Summary
The first two Wave 3 objects from the ROADMAP, developed in parallel and integrated:
ambitap.panbin~— direct per-source binaural panner. Mono + (azimuth/elevation) → stereo through a per-direction HRTF reconstructed from the built-in order-5 KEMAR SH set (the same sumprobe_responseperforms internally, kept in the time domain), resampled to the host rate, convolved by onepartitioned_convolverper ear. No ambisonic bus, no order-limited blur. Direction changes are click-free: the control thread builds a fresh convolver pair and publishes it through a lock-free single-slot handoff; the audio thread adopts at a block boundary, crossfades one block, and parks the retired pair for the control thread to free — the audio path never allocates or frees, and every pair lives in exactly one of three ownership slots.ambitap.distance~— distance cues for an HOA bus. Doppler delay → 1/r gain (attenuationexponent) → air-absorption low-pass → near-field compensation via the library's newdsp::nfc(per-order shelving, Daniel's formulation; merged in tap/AmbiTap#11). Delay comes first so distance modulation yields the physical pitch glide before level/tone shaping; NFC last so the shelf isn't fed through the time-varying delay interpolation. Distance-driven parameters slew with the same one-pole asdoppler~.Also: submodule bumped to AmbiTap main with
dsp/nfc.h, help patches for both objects, README updated, CI bundle count 12 → 14.Test plan
panbin~ownership/handoff scheme reviewed (pending/active/trash slots, atomic exchanges, adoption gated on a free trash slot)dsp::nfcmerged upstream with 121/121 tests green incl. an FMA-contraction leg🤖 Generated with Claude Code
https://claude.ai/code/session_012VeadvCRUHJdneFNwRbFAM
Generated by Claude Code