Digital Speech Decoder (DSD) rewritten as a C++ library
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Published by f4exb 11 months ago
PR #61 from @srcejon to fix #60
Published by f4exb over 1 year ago
Published by f4exb over 3 years ago
Removes flooding debug message possibly only for DMR.
Published by f4exb over 3 years ago
There was still an issue with the Golay(23,12) syndrome LUT missing a few values. However it does not appear that Golay(23,12) is effectively used.
Published by f4exb over 3 years ago
Fixed syndrome lookup table based decoder errors when bit flips occur in the parity bits. The fix could benefit to DMR, YSF and dPMR modes.
Published by f4exb about 4 years ago
This concerns all modes and allows to be more flexible on the synchronization sequence that will tolerate some mismatching symbols. For now the rule depends on the number of symbols in the sequence and is the following:
Published by f4exb over 4 years ago
Published by f4exb about 5 years ago
In DSDSymbol::pushSample
the m_count
variable could be zero if some other thread resets it. In case it is zero it means the symbol sequence should be restarted. This should fix a possible program crash that was detected in SDRangel (issue: https://github.com/f4exb/sdrangel/issues/406). In DSDcc this should fix #24
When changing decode mode with DSDDecoder::setDecodeMode
the state was not re-initialized properly resulting in the decoder being stuck in the previous mode. In consequence when changing baud rate in SDRangel the decoder could not detect the modes relevant to the new baud rate.
Published by f4exb over 5 years ago
Published by f4exb almost 6 years ago
Put in place the export logic for compatibility with MSVC compilers.
Published by f4exb over 6 years ago
EFR vocoder implementation for 4800 S/s rate. DV serial support only
Published by f4exb over 6 years ago
Reverted recent cleanup changes that introduced a compilation error when using serial DV. Fixed the unused variables warning by declaring these variables only if serial DV is used.
Published by f4exb over 6 years ago
Run the high pass filter on the 8 kS/s output from AMBE. It makes it easier to have the -3dB corner at 300 Hz exactly. Moreover it can prevent saturation of the interpolation and LP filter stage in case loud bass audio is present.
Published by f4exb over 6 years ago
Added complete support with voice for NXDN. This has been tested mainly with MMDVM and the 65000 reflector but has also been proved working with some local professional service so it should be fine for all standard NXDN networks.
dsdcc_1.8.0-1_amd64_xenial.deb
Debian package for Intel/AMD 64 bit architecture for Ubuntu 16.04dsdcc_1.8.0-1_amd64.deb
Debian package for Intel/AMD 64 bit architecture for Ubuntu 18.04Published by f4exb over 6 years ago
Reverted changes made in v1.7.5 as this breaks normal DMR operation.
Published by f4exb over 6 years ago
Allow upsampling by other integer multiples of 8000 S/s than 6. Thus audio sample rates of 16000, 24000, 32000 and 40000 S/s can be supported in addition of the existing 8000 and 48000 S/s
Published by f4exb over 6 years ago
Published by f4exb almost 7 years ago
Changed to a Butterworth filter with 240 Hz @ -3 dB.
Published by f4exb almost 7 years ago
dsdcc_1.7.3-1_amd64.deb
Debian package for Intel/AMD 64 bit architecture. Works in Ubuntu 16.04dsdcc_1.7.3-1_armhf.deb
Debian package for ARM (armv7l) architecture. Intended for Debian Jessie distributionsPublished by f4exb over 7 years ago
This might improve stability
dsdcc_1.7.2-1_amd64.deb
Debian package for Intel/AMD 64 bit architecture. Works in Ubuntu 16.04dsdcc_1.7.2-1_armhf.deb
Debian package for ARM (armv7l) architecture. Intended for Debian Jessie distributions