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MDSR Demodulator-Modulator Software Radio
https://www.qsl.net/rf-seismograph/
The MDSR software performs all of the demodulation, filtering (both radio frequency and audio frequency), signal enhancement (equalization and binaural presentation). Uses include every common amateur modulation: morse code, single sideband modulation, frequency modulation, amplitude modulation, and a variety of digital modes such as ...
Frequency Modulation (FM) Audio Demodulator
https://www.vocal.com/video/fm-audio-demodulator/
A basic FM audio demodulator is shown in Fig.1. The RF FM audio signal is first down-converted to the baseband. The baseband FM signal is filtered in the main filter to attenuate adjacent channels and other out of band signals. Then, the CORDIC technique is …
Modulation – Demodulation Software Radio
https://tapr.org/pdf/DCC2014-Modulation-Demodulation-Software-Radio-VE7DXW-ON6MU.pdf
By separating the audio devices to baseband audio and to IF, the software setup becomes very simple. For most computers and laptops the on-board device can be for base band audio processing. Software This year the MDSR Team concentrated on making the MDSR easier to use and to set up for RX and TX operation. We had two software releases V2.7 and ...
Modulation – Demodulation Software Radio
https://tapr.org/pdf/DCC2015-Mod-DemodSoftwareRadio-VE7DXW-ON6MU.pdf
The computer running the MDSR software is an i5 processor running at 3.4GHz with 8GB of RAM. The installed operating system is either 64bit Win 8.1 or Ubuntu 14. The sound card installed is an ASUS Xonar Essence true 24bit Performance. The on-board sound device is a Realtek High Definition on-board audio device. Mobile setup
Modulation – Demodulation Software Radio
https://files.tapr.org/meetings/DCC_2016/DCC2016-MDSR-V3-1.pdf
base band audio modes. x VLC: for recording and playing audio, and streaming audio during remote operations. x Dream V1.1: DRM demodulator for digital DRM shortwave radio reception. x Java SA: o Amplitude correcting real time spectrum analyzer: uses band noise to calibrate the filter response curve for a flat spectral display without filter flanks
Modulation – Demodulation Software Radio
https://www.qsl.net/rf-seismograph/downloads/Setting%20up%20the%20BiLiF%20hardware%20and%20MDSR%20calibration.pdf
Modulation – Demodulation Software Radio 8 Setting up the mic audio level V1 • Same hardware setup as above. • Open the Audio Setup panel by pressing F5. • Talk into the mic with a normal voice and adjust V1 for -10dB maximum input (left input channel). Setting up the TX filter pass • Same hardware setup as above.
Spectrum Analyzer Audio Demodulation Tips for AM/FM - Siglent
https://siglentna.com/operating-tip/audio-demodulation-tips/
Set the demodulation time to 10 s or so. The analyzer will update the signal trace every 10 s. This decreases the audio interruptions that occur during a sweep update but still provides some signal information; Turn the volume to 1 before enabling the demodulation.
AM Demodulation: Amplitude Modulation Detection ...
https://www.electronics-notes.com/articles/radio/modulation/amplitude-modulation-am-demodulation-detection.php
The demodulator is the circuit, or for a software defined radio, the software that is used to recover the information content from the overall incoming modulated signal. AM demodulators are found in many items of radio equipment: broadcast receivers, professional radio communication equipment, walkie talkies - AM is still used for air-band ...
DSD Converter Software [PCM to/from DSD audio 2022]
https://samplerateconverter.com/educational/dsd-converter
DSD Converter Software [PCM to/from DSD audio 2022] DSD converter is software to convert Direct Stream Digital audio files to other formats and back. DSD audio files have extensions DSF, DFF, ISO (SACD ISO). PCM multibit formats (WAV, FLAC, AIFF, mp3, etc. files and CD-audio disks) can be used as source or target.
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