Mela – AUv3: Synth, FX, MIDI 4+

Gain Computer
- Gain Computer is a modulator module for creating custom dynamics processors.
- Depending on its settings and placement in a preset, it can be used to build effects such as a feedback compressor, upward expander, look-ahead limiter, side-chain gate, or de-esser.
- It computes gain reduction or expansion from the input audio signal, similar to the gain computer in traditional dynamics processors.
- Instead of applying the gain change directly, it generates a modulation signal.
- This signal can be used to modulate a Gain module or any other parameter to produce dynamic effects.
- The Gain module pairs well with the Gain Computer module, but the modulator supports a wide range of other use cases.
- The module includes all the standard dynamics processor controls.
- Type Parameter: Selects between Compressor and Expander modes.
- Downward Processor: When the Range parameter is set to a negative value, the modulation signal is in the range [-100 %, 0 %], ideal for downward processing.
- Upward Processor: When the Range is positive, the signal is in the range [0 %, 100 %], ideal for upward processing.
- To learn how to create processors with features found in traditional dynamics tools, check the module help.
- Transfer Curve: Shows how parameters affect the transfer function. A horizontal pan gesture adjusts Threshold, a vertical gesture adjusts Ratio.
- Oscilloscope: Displays the modulation signal in real time. A horizontal gesture adjusts Attack, a vertical gesture adjusts Release.
- Gain Computer is a Mela Lab module and part of Collection 4.

Gain Module
- The Gain module applies gain to the audio signal.
- While designed to pair with the Gain Computer module, it can also be used independently in many other ways.
- It has three parameters: Down, Up, and Range.
- Although Down and Up use percentage units, gain is applied in decibels.
- For example, with Range set to 24 dB, Down at 50 % applies -12 dB gain, and Up at 25 % applies +6 dB.
- Gain is a Mela Lab module and part of Collection 4.

Latency Support
- Added the Ahead parameter to Audio In and MIDI In modules.
- The Ahead parameter sets how far in advance Mela requests audio and MIDI events from the host.
- This allows processing to begin before the events would normally occur.
- For example, it can allow an envelope follower to detect transients before they are heard.
- This feature is also referred to as plug-in latency.
- Most iOS hosts do not yet support plug-in latency compensation and may ignore this setting.
- The "Latency Test" factory preset can help users check DAW support and assist developers with testing and debugging their hosts.

User Interface
- Modulator Oscilloscope: The view XY-pan gesture now controls one parameter at a time.
- Compressor Graph: The view XY-pan gesture now controls one parameter at a time.
- Stereo Pan: The Pan and Spread parameter positions were swapped for consistency with other modules. Typically, the parameter below the graph is controlled by a horizontal pan gesture, while the one above is controlled by a vertical gesture.
- Mela Lab: Instead of displaying a flask icon in the bottom-right corner, Mela Lab modules now use the flask symbol for the module actions menu.
- In/Out Modules: The Audio In, Audio Out, MIDI In and MIDI Out modules are now more compact.
- Rectifier: Fixed an issue where the dials appeared visually disconnected from the graph.
- Many internal changes to improve the UI engine.

Other Changes
- Default Preset: Updated the default instrument preset to make it easier to add MIDI Processor modules.
- Factory Presets: Added a new effect preset.
- Factory Presets: Fixed an issue where the "Digitise Drums" preset would not load.
- Preset Browser: Fixed an issue where selecting a preset in a group with many presets would cause the list to scroll up.
- Crash: Fixed an app crash caused by receiving an unusually large MIDI packet.