2024-11-28
Nice!
Sound input works fine here on my Mac 15.1.1
Bijwerken
Godafoss Audio Spectrum Waterfall QRSS CW FSKCW
Uitgebracht: 2014-09-12
©2014-2017 Black Cat Systems, All Rights Reserved
iPhone schermafdrukken
iPad schermafdrukken
Beschrijving
Godafoss displays a waterfall of the audio spectrum, letting you view QRSS CW, DFCW, FSKCW, and other slow transmission speed signals. You can place your device’s microphone near the speaker or headphones of your radio to pick up the sound, or directly connect if you have an appropriate cable.
A frequency axis is displayed to the right or bottom of the screen, depending on the direction the waterfall is running.
You can pan the range of audio frequencies by touching the screen and sliding with your finger, in the same direction as the frequency axis.
You can also pinch and zoom to adjust the span of frequencies displayed, up to a maximum of 0 to 20 kHz.
If you don’t want to accidentally change the frequency range, tap the Lock button so it is highlighted. Panning and pinch/zoom will not affect the frequency range, so you don’t accidentally change them.
When first started, Godafoss defaults to an FFT size of 4K, with a Hanning window. You can change these and other settings by tapping the Setup button, and a set of controls will appear:
The first two are sliders that set the minimum and maximum audio levels for the waterfall colors. Adjust these to get the best looking display for the signals of interest. Often you want a blue background, the minimum dB slider should first be adjusted for this. Then adjust the maximum slider for the strongest signal, often it is desired to make this red or pink, but you have the flexibility to set it how you wish.
The FFT size sets the number of sound samples used to compute the spectrum. Higher values provide better frequency resolution, but update more slowly, and can smear faster signals.
The window type controls what windowing function is applied to the data before the FFT is run. The window modifies the received audio data to reduce what is called “leakage” from non periodic signals. Leakage smears the signal over a wider frequency range. Experimentation will help you find he best settings. The following windows are available:
Rectangular
Hanning
Hamming
Tukey
Cosine
Lanczos
Blackman
Speedup allows multiple FFTs to be run on the same set of audio samples, shifted slightly in time, This can be useful when a larger FFT size is required, but the signal rate demands a faster update rate on the waterfall. A speedup of 1 means no speedup is applied, a speedup of 10 means that 10 FFTs are performed on each data sample.
Finally, you can change the direction the waterfall runs, to the left, right, up, or down.
Note that making changes to any of these settings only affects newly received audio, previously received audio already displayed on the waterfall is not affected.
You can take a screenshot of the waterfall by tapping on it three times. The screen will flash to let you know the picture has been taken, and it will be saved to your Saved Photos album. Then you can share your received signals with your friends.
Wat is nieuw in versie 1.1
This app has been updated by Apple to display the Apple Watch app icon.
Updates for iOS 10.3
Added Blackman Harris window
Verkoper
Informatie
Ontwikkelaar
Categorieën
Versie
1.1
Grootte
1,3 MB
Game Center
Nee
VPP Device Licensing
Ja
Beoordeling
Beoordeling: 4+
Compatibiliteit
iOS 6.0 of nieuwer
Apparaten
iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone SE (2e generatie), iPhone 12, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 12 mini, iPhone 13, iPhone 13 Pro, iPhone 13 Pro Max, iPhone 13 mini, iPhone SE (3e generatie), iPhone 14, iPhone 14 Plus, iPhone 14 Pro, iPhone 14 Pro Max, iPhone 15, iPhone 15 Plus, iPhone 15 Pro, iPhone 15 Pro Max, iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max, iPhone 16e, iPhone 17, iPhone 17Pro, iPhone 17ProMax, iPhone Air, iPad 2 (Wi-Fi), iPad 2 (3G), iPad (3e generatie) (Wi-Fi), iPad (3e generatie) (4G), iPad (4e generatie) (Wi-Fi), iPad (4e generatie) (4G), iPad (5e generatie) Wi-Fi, iPad (5e generatie) Wi-Fi + Cellular, iPad (6e generatie) Wi-Fi, iPad (6e generatie) Wi-Fi + Cellular, iPad Pro, iPad Pro (Cellular), iPad Pro (9,7 inch), iPad Pro (9,7 inch) (Cellular), iPad Pro 12,9-inch (2e generatie), iPad Pro 12,9-inch (2e generatie) Wi-Fi + Cellular, iPad Pro (10,5-inch), iPad Pro (10,5-inch) Wi-Fi + Cellular, iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro 12,9-inch (3e generatie), iPad Pro 12,9-inch (3e generatie) Wi-Fi + Cellular, iPad Air, iPad Air (Cellular), iPad Air 2, iPad Air 2 (Cellular), iPad Air (derde generatie), iPad Air (derde generatie) Wi-Fi + Cellular, iPad mini (Wi-Fi), iPad mini (4G), iPad mini Retina, iPad mini Retina (Cellular), iPad mini 3, iPad mini 3 (Cellular), iPad mini 4, iPad mini 4 (Cellular), iPad mini (5e generatie), iPad mini (5e generatie) Wi-Fi + Cellular, iPad (7e generatie) Wi-Fi + Cellular, iPad Pro 11-inch (2e generatie), iPad Pro 11-inch (2e generatie) Wi-Fi + Cellular, iPad Pro 12,9-inch (4e generatie), iPad Pro 12,9-inch (4e generatie) Wi-Fi + Cellular, iPad Air (4e generatie) (Wi-Fi), iPad Air (4e generatie) (Wi-Fi + Cellular), iPad (8e generatie) Wi-Fi, iPad (8e generatie) Wi-Fi + Cellular, iPad Pro 11-inch (3e generatie), iPad Pro 11-inch (3e generatie) Wi-Fi + Cellular, iPad Pro 12,9-inch (5e generatie), iPad Pro 12,9-inch (5e generatie) Wi-Fi + Cellular, iPad (9e generatie), iPad (9e generatie) Wi-Fi + Cellular, iPad mini (6e generatie), iPad mini (6e generatie) Wi-Fi + Cellular, iPad Air (5e generatie), iPad Air (5e generatie) Wi-Fi + Cellular, iPad Pro 11-inch (4e generatie), iPad Pro 11-inch (4e generatie) Wi-Fi + Cellular, iPad Pro 12,9-inch (6e generatie), iPad Pro 12,9-inch (6e generatie) Wi-Fi + Cellular, iPad (10e generatie), iPad (10e generatie) Wi-Fi + Cellular, iPad Air 11-inch (M2) Wi-Fi, iPad Air 13-inch (M2) Wi-Fi, iPad Air 13-inch (M2) Wi-Fi + Cellular, iPad Pro 11-inch (M4) Wi-Fi, iPad Pro 11-inch (M4) Wi-Fi + Cellular, iPad Pro 13-inch (M4) Wi-Fi, iPad Pro 13-inch (M4) Wi-Fi + Cellular, iPad mini (A17 Pro) Wi-Fi, iPad mini (A17 Pro) Wi-Fi + Cellular, iPad (A16) Wi-Fi, iPad (A16) Wi-Fi + Cellular, iPad Air 11-inch (M3) Wi-Fi, iPad Air 11-inch (M3) Wi-Fi + Cellular, iPad Air 13-inch (M3) Wi-Fi, iPad Air 13-inch (M3) Wi-Fi + Cellular, iPad Pro11M5, iPad Pro11M5Cellular, iPad Pro13M5, iPad Pro13M5Cellular, iPod touch (vierde generatie), iPod touch (vijfde generatie), iPod touch (zesde generatie), iPod touch (7e generatie), Apple Watch Series 4, Apple Watch Series 5, Apple Watch Series 6 (GPS), Apple Watch Series 6 (GPS + Cellular), Apple Watch Series SE (GPS), Apple Watch Series SE (GPS + Cellular), Apple Watch Series 7 (GPS), Apple Watch Series 7 (GPS + Cellular), Apple Watch Series 8 (GPS), Apple Watch Series 8 (GPS + Cellular), Apple Watch SE (2e generatie) (GPS), Apple Watch SE (2e generatie) (GPS + Cellular), Apple Watch Ultra, Apple Watch Series 9 (GPS), Apple Watch Series 9 (GPS + Cellular), Apple Watch Ultra 2, Watch10, Watch10Cellular, Watch11, Watch11Cellular, WatchSE3, WatchSE3Cellular, WatchUltra3
Talen
Engels
App Store: Klantbeoordeling
Beoordelingen en recensies
5,0 van 5 (1 waardering)
App Store: Recensies van klanten
2016-11-13
Good Work, Nice Design!
Nice to have this kind of stuff on the market of iOS. I like this app a lot and it does exactly what I was hoping for!