Codec2Talkie

47 downloads

Uploaded by

Pill

Version

1.55 (build 155)  3 version(s)

Codec2Talkie versions

1.71 (build 171)

120 downloads

1.68 (build 168)

28 downloads

1.55 (build 155)

47 downloads

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Size

8.0 MiB

Publish Date

2023-05-28

Category

Communication

Package

com.radio.codec2talkie

Minimum OS

Android 6.0

SHA1

22bb7e58b30e9dda7f7ef4321948374fc1a3eaac

Description

With Codec2 Talkie you can turn your Android phone into real VHF/UHF Walkie-Talkie (requires additional digital radio hardware/software modem). This minimalistic Android application is a Walkie-Talkie style digital voice frontend for your radio modem, which uses open source Codec2 for speech audio frame encoding/decoding. It is mainly intended for DV experimentation with ultra low cost 3-8 dollar radio modems, such as LoRa and 15-25 dollar ESP32 board flavours with built-in LoRa module: T-Beam, LoPy, TTGO, Heltec and others, but could also be used with custom hardware of software (Direwolf) modems + external transceivers or as a test harness for Codec2 frames generation and their playback. Application connects to your radio KISS Bluetooth/USB/TCPIP modem, records speech from the phone microphone on transmit, encodes audio into Codec2 format, encapsulates into KISS frames and sends to your modem. On receive, modem sends KISS packets to the phone with Codec2 speech, application decodes Codec2 samples and plays them through phone speaker. It does not deal with radio management, modulation, etc, it is up to your modem and radio, it could be just AFSK1200, GMSK 9600, LoRa, FSK, FreeDV or any other modulation scheme. Radio just needs to expose KISS Bluetooth/USB/TCPIP interface for speech frames.