Thanks. How about filtering; should input audio be bandpass filtered or is there a built-in filtering in codec? If pre-filtering is required, what are the requirements for that?
t. matti On Fri, Jun 18, 2021 at 10:54 AM David Rowe <da...@rowetel.com> wrote: > Hi, > > It should be 16 bit shorts, mono, 8 kHz sample rate. > > - David > On 18/6/21 3:17 pm, fin7...@gmail.com wrote: > > Hi, > > I’m trying to investigate if Codec2 could be used in a software project, > where a low bit rate speech coding is required. I have built the codec > using the instructions from Github and with included reference audio files > I can get similar audio quality what can be heard on Codec2 web page. > However, if I try coding & decoding with some other recordings, the voice > quality is unacceptable poor, even in case where there is no background > noise at all. > > This makes me think that I have something wrong with my input audio file > format. What are the actual requirements for raw file to get best possible > performance? Sample rate, encoding etc? > At this stage I am using Audacity to convert the audio for testing. > > Thanks, and keep up the good work! > > t. Matti > > > _______________________________________________ > Freetel-codec2 mailing > listFreetel-codec2@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >
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