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RTL-SDR Tutorial: Decoding Digital Voice (P25, DMR, …
https://www.rtl-sdr.com/rtl-sdr-radio-scanner-tutorial-decoding-digital-voice-p25-with-dsd/
The RTL-SDR software defined radio combined with SDRSharp and a program called "digital speech decoder" (DSD) can be used as a radio scanner to easily and cheaply listen to unencrypted digital radio voice conversations. Digital …
RTL-SDR Tutorial: Decoding DRM Radio
https://www.rtl-sdr.com/tutorial-drm-radio-using-rtl-sdr/
It provides superior audio quality compared to AM signals by using digital audio encoding. With an upconverter, good antenna, and decoding …
SDR vs. Legacy Radio - which is better?
https://www.ab4oj.com/nsprog/apdxc16_sdr.pdf
AGC design in a direct-sampling SDR as opposed to a legacy receiver. • In a legacy superhet/IF-DSP receiver, the AGC levels average audio output over a wide range of RF input levels, and prevents overload of downstream mixers and IF stages. • In a direct-sampling SDR, the AGC can also adjust the ADC input level via a voltage-
DRM audio codec - building - HELP! - SDRplay Community Forum
https://www.sdrplay.com/community/viewtopic.php?t=51
Re: DRM audio codec - building - HELP! With the last EXTIOsdrplay dll you can use SODIRA for DRM decoding. Use as low as possible sampling frequency. sodira was designed for soundcard input and is not good with high sampling rates. Last edited by F1BJB on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
GitHub - DSheirer/sdrtrunk: A cross-platform java ...
https://github.com/DSheirer/sdrtrunk
On the menu, choose View >> User Preferences and then click the Decoder >> JMBE Audio Library tab. For versions prior to Version 0.5.0, the JMBE wiki page contains instructions for downloading the JMBE audio library source code and compiling the JMBE library. Once you have compiled the library, launch the sdrtrunk application.
QRadioLink - SDR transceiver software for Linux
SDRangel is a full SDR transceiver for SSB, FM, DMR, D-Star, C4FM and DVB-S. It can use only SDR hardware but it supports a large number of them. Mumble is what QRadioLink uses under the hood. It is a great alternative for people who don't want to use SDR radios. Codec2 GMSK is a great and free software alternative to D-Star on VHF-UHF handheld radios. It only requires a …
Windows 10 Privacy Settings blocking VNWA USB Sound …
https://www.sdr-kits.net/documents/Win10_privacy_settings_blocking_codecs.pdf
Audio Capture Devic Line USB AUDIO CODEC) T est Audio ADC Rescui 24 48000 Hz Misc Audio Settin Audio Buffer Length in Samples Samples IF Period 1 tt Presarnples tt Postsamples Caliblate Sample Rate Min= Audio Capture Device availeble VNWA Error. No operational sound devices detected. OK Calcd Sample Rate 47999.7 Aux. Reference = Right Charnel
DRM in SDR Console
https://www.sdr-radio.com/drm-in-sdr-console
Why I haven't added DRM to SDR Console. I'm often asked to incorporate a Digital Radio Mondiale (DRM) receiver into SDR Console. The reasons why I haven't done this are: Patent / royalty issues with the audio codec, and. The Dream project works well. Brendan Wahl, WA7HL, co-Moderator, of the DRM North America Newsgroup explained the legal ...
SBITX: Hackable HF SDR For The Raspberry Pi | Hackaday
https://hackaday.com/2021/08/06/sbitx-hackable-hf-sdr-for-the-raspberry-pi/
Well, the samplerate of the RTL is with 2.4MSPS about 50x more than the audio codec, basically adding another 17dB processing gain on top of the 50dB 8-bit ADC range.
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