From da71c96ec71247b299ff3ecb738b783b9457c7ae Mon Sep 17 00:00:00 2001 From: Denny Date: Sat, 25 Feb 2017 07:25:37 -0500 Subject: [PATCH] Updates the spectral display wiki entry for version 0.3.0 --- SpectralDisplay_V0.3.0.md | 70 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 SpectralDisplay_V0.3.0.md diff --git a/SpectralDisplay_V0.3.0.md b/SpectralDisplay_V0.3.0.md new file mode 100644 index 0000000..238f8e9 --- /dev/null +++ b/SpectralDisplay_V0.3.0.md @@ -0,0 +1,70 @@ +**Version:** 0.3.0 + +Spectral Display +--- + +The spectral display component shows the frequency activity of the currently selected tuner and overlays +a visual representation of channel configuration contained in the playlist and listed in the +[Channels](Channels_V0.3.0) tab. + +### Cursor +A cursor with frequency readout is automatically shown as you move the mouse about the spectral display window. +When zoomed in, the zoom level is also displayed below the frequency value. + +### Zoom +The spectral and waterfall displays can be zoomed together using the mouse scroll wheel, or using the +right-click context menu. + +When zoomed in, a small zoom window appears at the bottom of the waterfall display indicating the area +of the spectral and waterfall displays that is visible and the zoom level. You can left-click drag the +display with the mouse when zoomed in to drag the display left or right. + +### Context Menus + +Right-click anywhere in the spectral display to show a list of context-specific menu options. + +#### Channel Menu + +[Channels](Channels_V0.3.0) defined in the playlist are also displayed in the spectral display window. +Each channel exposes a context menu allowing you to start/stop the channel decoder. + +#### Color Menu + +The color menu allows you to change any of the global color settings used by all spectral displays. + + * **Background** - background color for the spectral display + * **Channel** - channel overlay color for channels that are defined in the configuration, but are currently not + processing (decoding) or selected + * **Channel Processing** - channel overlay color for any channels that are currently processing (decoding) + * **Channel Selected** - channel overlay color for the channel that is currently selected in the + [Now Playing](NowPlaying_V0.3.0) tab. + * **Cursor** - color used for the cursor and frequency readout + * **Gradient Bottom** - bottom color for the gradient used to display the frequency spectrum + * **Gradient Top** - top color for the gradient used to display the frequency spectrum + * **Lines** - color used for lines and frequency labels + +#### Display Menu + +The display menu allows you to change settings associated with Discrete Fourier Transform (DFT) results +that are displayed in the spectral display. +* **Averaging** - sets the averaging window size. Averaging occurs over multiple sets of DFT results. +* **Channel** - controls display of channel overlays. Choose to display ALL, NONE, or only the channels +currently ENABLED and decoding. +* **FFT Width** - bin size used in DFT calculations, 512 - 32,768. Using a higher setting provides +increased resolution in the display, but also significantly increases CPU usage. +* **Frame Rate** - determines the number of times per second that the DFT is calculated and the spectral +display is updated. +* **Window Type** - specifies the windowing method to use prior to calculating the DFT. Windowing +minimizes signals from bleeding over into neighboring DFT bins. +* **Smoothing** - sets the smoothing filter type. Smoothing is applied across DFT bins within the +same DFT result set. + +#### Zoom Menu + +Changes the zoom size where 1x is no zoom and 64x is the display zoomed in 64 times. + +### Changing Displayed [Tuner](Tuners_V0.3.0) + +In the [Tuners](Tuners_V0.3.0) tab, click on the **Main** link for any of the tuners to +show that tuner's output in the main/primary spectral display. Click on the **New** link +to create a new spectral display window for the tuner. \ No newline at end of file