Bonjour,
Je crois bien que l'on va vers un nouvel air de l'écoute des communications numériques.
Pour les gens qui connaissent un peu Linux, ils peuvent télécharger les fichiers suivants, les compiler et utiliser un PC pour écouter du Motorola TDMA ou du P25-Phase I.
Si quelqu'un a l'occasion de confirmer le bon fonctionnement, ce serait apprécié. (P25-phase I confirmé)
DSD V1.0 Digital Audio Decoder
http://sourceforge.net/projects/dsdmbelib/files/ (meilleur lien, merci à VE2JOS)
From the README:
DSD is able to decode several digital voice formats from discriminator
tap audio and synthesize (play) the decoded information. Speech
synthesis requires mbelib, which is a separate package.
Supported formats in version 1.0:
P25 Phase 1 Widely deployed radio standard used in public safety
and amateur radio.
Full support including decoding and synthesis of speech,
display of all link control info, and the ability to save
and replay .imb data files
MoTDMA Proprietary two slot TDMA system currently being deployed
by several public safety organizations. Frame format
appears to be based on a manufacturer proposal for P25
Phase 2.
Partial support that allows the decoding and synthesis
of speech, and the ability to save and replay .amb data
files. DSD will lock onto an arbitrary timeslot. Link
control info display and the ability to select specific
timeslots may be included in future releases.
--------------
Bonne écoute!
Alain
Je crois bien que l'on va vers un nouvel air de l'écoute des communications numériques.
Pour les gens qui connaissent un peu Linux, ils peuvent télécharger les fichiers suivants, les compiler et utiliser un PC pour écouter du Motorola TDMA ou du P25-Phase I.
Si quelqu'un a l'occasion de confirmer le bon fonctionnement, ce serait apprécié. (P25-phase I confirmé)
DSD V1.0 Digital Audio Decoder
http://sourceforge.net/projects/dsdmbelib/files/ (meilleur lien, merci à VE2JOS)
From the README:
DSD is able to decode several digital voice formats from discriminator
tap audio and synthesize (play) the decoded information. Speech
synthesis requires mbelib, which is a separate package.
Supported formats in version 1.0:
P25 Phase 1 Widely deployed radio standard used in public safety
and amateur radio.
Full support including decoding and synthesis of speech,
display of all link control info, and the ability to save
and replay .imb data files
MoTDMA Proprietary two slot TDMA system currently being deployed
by several public safety organizations. Frame format
appears to be based on a manufacturer proposal for P25
Phase 2.
Partial support that allows the decoding and synthesis
of speech, and the ability to save and replay .amb data
files. DSD will lock onto an arbitrary timeslot. Link
control info display and the ability to select specific
timeslots may be included in future releases.
--------------
Bonne écoute!
Alain
Bonne écoute !
Alain
Alain