Hi David, So, these samples I picked up from drill sergeants on youtube, the ones I use in the end will be cleaner. Ideally I would like to get at least some amount of agitation in the voice to work, it does seem like a very plausible scenario if we're talking soldier communication potentially mid-combat. I'm going to experiment a bit to see if I can figure out a mastering chain that filters out what confuses the algorithm.
Do you think it's possible to improve the results by increasing the bitrate? If so, how would you suggest I approach it? Is it sufficient to expand on the 3200 algorithm or would the assumptions you mentioned also need to be changed? Best regards Jesper On Thu, Dec 17, 2020 at 8:18 PM David Rowe <[email protected]> wrote: > Hi Jesper, > > Interesting samples! It seems to do OK on what I would call "clean > speech" - e.g. the female starting at 1:02, and male at 1:30, but struggles > with the people shouting, or samples that were recorded from microphones > far away from the speaker (room acoustics). I had trouble understanding > some of the source samples. > > I'm sorry but I don't think there is much we can do with pre-processing to > improve the quality. To get the very low bit rates we make certain > assumptions about the input speech, e.g. the people speaking close to the > microphone. > > Cheers, > David > On 17/12/20 10:24 pm, Jesper Norberg wrote: > > Hi everyone! > > I'm working on a project where I want to add a digital radio feel to > military voice lines. I found codec2 and really like the sound in the > examples, but I'm having trouble reproducing the same audio quality. Some > of it sounds good, but especially when the voice line gets more agitated it > starts breaking apart. Appending an audio sample to show what I mean, this > is a 8khz 16 bit mono sample with a codec2 bitrate of 3200, which from what > I understand should be the highest quality. The sample is first women then > men, both with examples in descending intensity. > > I'm a bit new at this, is there any preprocessing/settings that I could > apply in order to improve the quality? > > Original > > https://drive.google.com/file/d/1IWyV_CwK0KYXC0_ZN3t3QJNk9UCwTOp9/view?usp=sharing > > > codec2 - 3200 > > https://drive.google.com/file/d/1Ww1QsNUw8s5TLQXQnBln4CkgpmjUuVFS/view?usp=sharing > > Best regards > Jesper > > > _______________________________________________ > Freetel-codec2 mailing > [email protected]https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >
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