Version 1.10, uploaded March 29, 2021
A single Teensy Audio Library class object for a complete SDR (software-defined-radio) demodulator/processor.
- Creates a dual-conversion receiver with an IF at approx. 7kHz
- Contains demodulators for CW/SSB/AM/SAM and a WSPR mode
- Contains an impulse noise blanker, AGC, ALS (adaptive-least-squares) automatic notch/peak filters
- Contains demod mode dependent IF and audio band-pass filters
- Uses float32 processing throughout.
- Uses the I2S input and output on the Teensy Audio Board.
See the detailed description in the supplied pdf file
Changes from Version 1.01:
- Fixed bug in AM & SAM demodulators that was causing severe audio distortion.
- Modified PLL in SAM demodulator to improve carrier lock.