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@@ -67,6 +67,27 @@ input on port 9000. DST="tcp://yourserver:9000" BITRATE=64 +General remarks +--------------- + +Avoid using sources that are already encoded with a low bitrate, because +encoder cascading will noticeably reduce audio quality. Best are sources +encoded with a lossless codec (FLAC). Otherwise, try to get MP3 at 320kbps, AAC +at 256kbps or higher bitrates. + +Ideally use a source at the correct sampling rate (32kHz or 48kHz, according to +your encoder configuration). VLC can do resampling, but on some systems selects +the ugly resampler which creates artifacts. Try adding +`-L --audio-resampler=samplerate -L --src-converter-type=0` +to your command line, but enable verbose mode and read the VLC debug output to +check that it enables the libsamplerate resampler, and not the ugly resampler. + +The codecs do not behave well when your source material has peaks that go close +to saturation, especially when you have to resample. When you see little +exclamation marks with the -l option, it's too loud! Reduce the gain at the +source, or use the gain option if that's not possible. + + DAB+ AAC encoder configuration ------------------------------ By default, when not overridden by the --aaclc, --sbr or --ps options, |