套件：freedv（1.8.11-1 以及其他的） [debports]
Digital Voice mode for ham radio
FreeDV is a digital voice mode intended for transmission and reception over high-frequency (HF) radio. It uses a frequency division multiplex (FDM) modem with 15 carriers and no forward error correction (FEC). A low bit-rate voice coder-decoder (Codec 2) provides voice quality without the listener fatigue caused by noise and interference normally associated with analog single sideband (SSB) voice. A HF SSB transceiver, personal computer and two sound cards are required. Path simulation and on-the-air HF testing have shown that decoding voice is possible at a signal-to-noise ratio of 4 dB.
The FreeDV software was developed by David Rowe (Codec 2, FDM modem implementation, integration) and David Witten (GUI, architecture design). The FreeDV design and user interface was based on the earlier FDMDV program which was developed by Francesco Lanza. The FDM modem design and development was supported from Peter Martinez.
其他與 freedv 有關的套件
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- dep: libc6.1 (>= 2.34)
- GNU C 函式庫：共用函式庫
同時作為一個虛擬套件由這些套件填實： libc6.1-udeb
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- dep: libcodec2-1.2 (>= 1.2.0)
- Codec2 runtime library
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- dep: libgcc-s1 (>= 3.4)
- GCC 支援函式庫
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- dep: libhamlib4
- Run-time library to control radio transceivers and receivers
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- dep: libpulse0 (>= 0.99.1)
- PulseAudio client libraries
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- dep: libsamplerate0 (>= 0.1.7)
- Audio sample rate conversion library
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- dep: libsndfile1 (>= 1.0.20)
- Library for reading/writing audio files
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- dep: libspeexdsp1 (>= 1.2.1)
- DSP library derived from speex
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- dep: libstdc++6 (>= 13.1)
- GNU Standard C++ Library v3
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- dep: libwxbase3.2-1 (>= 3.2.2+dfsg)
- wxBase library (runtime) - non-GUI support classes of wxWidgets toolkit
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- dep: libwxgtk3.2-1 (>= 3.2.1+dfsg-2)
- wxWidgets Cross-platform C++ GUI toolkit (GTK 3 runtime)