2026-11-06 01:34:08 +01:00
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# Track inserts
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The sequencer's **Create** dropdown groups track creation, WAV import and
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instrument loading. **View → Track inspector** opens the optional inspector;
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it is hidden when the application starts to leave more room for editing.
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Project format 17 stores up to eight effect slots per track, their order,
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bypass, wet amount and chain output gain. Formats 1–16 read with empty chains.
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Metadata load, clone and history never open executable plugin modules. Track
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move, duplicate and removal retain the association with stable track IDs.
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Nonempty bus chains are rejected. The model accepts mono effect specifications
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for LADSPA, VST2, VST3, CLAP and internal effects; this alone does not establish
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that a third-party binary is compatible with the host.
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The chain API is declared in `xtc_plugin.h`. Setter errors preserve the old
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chain; plugin identity and layout are checked when preparing playback.
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2026-11-06 01:35:53 +01:00
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Playback prepares an independent serial graph for each affected track. Audio
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clips on the same track sum before its effects; instrument and scheduled MIDI
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contributions also pass through their track graph. Effects run before track
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and bus gain/pan, and meters observe their output. Wet/dry uses parallel gain
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branches. Internal effect history resets at timeline discontinuities.
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Each renderer owns its plans and preallocated raw buffers (up to 256 KiB per
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affected track); processing uses blocks of at most 256 frames, with no host
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allocation or I/O. Mono effect adapters require zero reported latency. External
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plugin state on seeks follows the existing host contract. Bus inserts and
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tracks containing both audio assets and MIDI reject preparation explicitly.
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Live unassigned sine monitoring remains a separate master input.
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2026-11-06 01:37:09 +01:00
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Open **View → Track inserts** (Ctrl+4) and choose a track. **Add effect** offers
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internal Delay/Reverb and the plugin library. The left rack shows signal order;
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the graph displays the actual generated graph compiled by playback. Wiring in
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this view is read-only: edit the rack to preserve the serial chain. The global
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Modular Graph remains independent. A failed plugin probe or playback preparation
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preserves the current project; successful additions are undoable.
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2026-11-06 01:38:07 +01:00
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The library searches configured Preferences paths recursively (including VST3
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bundle contents), with case-insensitive search and format filters. LADSPA and
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VST2 both use `.so`, so those filters share candidates until inspection identifies
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the ABI. Listing files executes no plugin code. Only inspect trusted binaries.
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2026-11-06 01:38:55 +01:00
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Select a slot in the rack, then use **Up**, **Down**, **Bypass** or **Remove**.
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The selection follows reordered effects. Bypassed slots retain their settings
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and appear marked in the rack; their nodes are omitted from the compiled graph.
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Each successful operation creates one project undo step.
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2026-11-06 01:39:31 +01:00
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**Inspect / edit** verifies the selected plugin and opens its identity and generic
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controls. Reset defaults clears parameter automation on Apply. Cancel leaves the
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project unchanged. Internal effects and LADSPA expose controls; modern adapters
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currently expose none and run default configurations. Native plugin editor
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windows and opaque plugin-state chunks are not implemented.
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