sound modulation6 links
- Sounds of the Commercial and Military Digital Station
- Information and digital audio samples of various modem modulation types
[ Hits: 1467 | Votes: 4 | Rating: 3.50 ]
- JMSK is a software modem that implements a good coherent MSK demodulator that has performance comparable to BPSK. Signals are demodulated from the soundcard. Modulated signals can be routed through the soundcard or to an external device such as a DDS module for direct RF modulation. The advantage of MSK compared to PSK is that non linear amplifiers can be used and has a faster roll off. It is an open source cross-platform program written in C++ Qt.
[ Hits: 161 | Votes: 1 | Rating: 1.00 ]
- Spectrum Analyzer Real-time FFT
- Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.
[ Hits: 11091 | Votes: 9 | Rating: 7.77 ]
- Receivers sorted by IM3
- Sorted by Intermodulation. Best receiver first.
This is a measure of how badly a close-spaced signal will trash your receiving with spurious signals or splatter sounds,
[ Hits: 579 | Votes: 0 | Rating: 0.00 ]
- The MGM Interface
- General purpose RTX-PC sound card Interface for MGM (Machine Generated Modulation)
[ Hits: 351 | Votes: 1 | Rating: 10.00 ]
- SDR-908 Portable SDR
- The SDR-908 is a software defined radio designed specifically for portable use, without the bother of being tethered to a PC or soundcard for the modulation/demodulation processing performed in this kind of radio.
[ Hits: 1148 | Votes: 0 | Rating: 0.00 ]
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