
Spectra is an app for creating 3D art from video and audio on iOS and Mac. It stores parameters such as control values, color palettes, and audio samples in settings files. It comes with built-in presets, video and audio samples to generate art quickly. You can customize the art with your own settings, video, and color palettes. Video frames can be used to generate color palettes for drawing, and the audio is used to modulate line or arc length. The colors pane contains a color palette generator and other features.
v1.5
NEW - Shadow option in the 'Lines' pane. This option will draw shadows for every line. FIXED - After app relaunch the 'Play Waveform Audio' may sometimes play the wrong audio file.
Other Recent Updates:
New - When saving a spectra as a video you now have the option of including the audio, if available. The video duration will then match the audio duration. This can create a fun visualization of the audio.
For security purposes the ability to record the screen has been removed. You can use QuickTime Player to create screen recordings, and then load the screen recording video as you would any other video.
New - The File menu 'Save Video Audio' has been changed to 'Save Waveform Audio' enabling you to save the any waveform audio, if there is one, for email, messaging, etc.
Fixed - Issue with audio processing that could prevent a settings file that uses audio from being restored to the correct look. It was due to a slight variation in audio modulation values. This issue was caused by changes in the last version.
• IMPROVED: Video color generation faster.
• NEW: Apply audio or set background image from Settings. ‘Apply Audio’ for audio, 'Set Background' for background.
• NEW: Playing audio shows its progress in the waveform graphic.
• NEW: When switching to settings without a background from one that does an option to remove the current background is offered.
• NEW: ‘Use Opened Audio’ menu item in the Audio menu: sets the current audio to the last audio imported from external apps (Files, iCloud, Messages, Music, etc) or internal samples.
• IMPROVED: The audio menu items 'Use Video Audio' and 'Use Settings Audio' are reimplemented for clarity.
• FIXED: Some audio files were not loading due to a mismatch of file extension and audio type.
• NEW: Option apply current background color to spectra when rendering. The background color is set in the Size pane.
• Other improvements.
Updated 'More Settings' web view. Use 'More Settings' to load additional settings from the web into the 'My Settings' table.
Fixed an issue with the 'My Settings' table where the table experienced inadvertent scrolling after selecting a setting.
Improved Performance: Settings data is cached to handle the increased load from incorporating background images and waveform audio files. Most notably the presets table scrolls more smoothly, but other methods that use settings data is faster.
Background Preview in Settings: The background image can be previewed from the user settings table. (Swipe on a row in iOS, right(control)-click on a row in macOS.)
Open Settings Options: Opening settings is more discriminate - if current settings has background, but new settings do not then an alert is presented because the existence of a background could mean the spectra does not look as expected unless you change the background settings.
Play Waveform Audio: The current waveform audio file can be played (if it exists; a waveform graphic only displays the audio samples, and its presence does not mean there is an audio file associated with it.) Select ‘Play Waveform Audio’ from the Audio menu. (Or on Mac use the ‘Play Waveform Audio’ button, and in iOS tap the waveform graphic)
Apply Audio File Option: When opening settings with an audio file contained you have the option to ‘apply’ the audio file. This means that the file is read and stored as the current audio file for the waveform. This way if the settings are changed and saved a copy of the same audio can be included. (Audio is saved so that you can recall the audio by playing it from the user setting table.)
Save Audio Option: Saving settings presents the option to NOT save the current waveform audio file. Saving the audio file is for two purposes:
1. So that you can recall the audio by playing it from the user setting table.
2. So that if you load setting with an audio file you apply it so it may be included when saving a modified version of the settings.