How can we convert a DMR signal into clear voice by RTL_SDR?

This page summarizes the projects mentioned and recommended in the original post on /r/RTLSDR

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  • op25

    Fork of osmocom OP25 by boatbod

  • I have no experience with DMR myself, but my understanding is that the Boatbod fork of OP25 has experimental DMR support, and I believe SDRTrunk software does, too.

  • md380_vocoder

    Software AMBE+2 2450x1150 vocoder library using md380 firmware

  • This one runs through a raspberry pi. https://github.com/nostar/md380_vocoder

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  • dsd

    Digital Speech Decoder (by LouisErigHerve)

  • In Linux, I use this particular port of DSD - this can be piped into from GQRX, rtl_fm+sox, SDR# or any other SDR software that can output the audio of said signal as raw, 44KHz PCM unsigned audio (mono).

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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