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- Fri Nov 16, 2018 10:41 pm
- Forum: SDRuno
- Topic: What's This Minor Audio Distortion From?
- Replies: 3
- Views: 2939
I've been noticing the very same thing on WWV, mainly at 10 MHz, using my own multicast-based SDR written from scratch and using the AMSAT UK Funcube Pro+ dongle. PY2SDR contributed a spectrum display program for my SDR, and on it I see a lot of distortion. I see harmonics of the audio tones, and in...
I've just been working on this myself. There are several methods that give approximate results, but the only way I know to get exact results is the arctangent function, also available in complex math libraries as the carg (complex argument) function. Applying this to a complex sample gives you its p...