I am Muhammad Usman Akbar from Pakistan and a student of Telecom engineering final year from islamia University of Bahawalpur. I am taking about the following IC's. 1. TPS54329E used in the power circuit (12-15 VDC -> 5 VDC 2. STMPS2141 used in OTG USB interface 3. EMIF02-USB03F2 also used in OTG USB interface 4. LD3985M33R used in 5V to 3.3 V PS.
On Mon, Dec 28, 2020, 11:49 PM David Rowe <[email protected]> wrote: > Hello Usman, > > 1/ Can you please send us a link that explains your project, who you are, > and your University Department? We are happy assist with student projects > but need to be sure they are not defense related. > > 2/ Also pls ask a specific question - such as "can I substitute this part > number (data sheet link) for SM1000 component XYZ". You will have to do > your homework first - working out which parts you need t substitute. > > - David > On 28/12/20 6:03 pm, Muhammad Usman Akbar wrote: > > Hi, Everyone > I am final year student and want to design a same SM1000 hardware. > I am working on a hardware design of SM1000. > I am following the version F available online on GitHub Rowetel. > I face some problems in selecting components because components used in > SM1000 previously not available in my country (Pakistan). Or some of the > components not clearly find on internet. > Anyone here who guide me to found alternate components or the same. > Your reply is highly appreciated. > Thanks in advance. > > Regards: > Usman > > On Fri, Dec 18, 2020, 4:17 AM David Rowe <[email protected]> wrote: > >> Hi Jesper, >> >> I think if you use clean samples - ie person speaking close to the mic >> (but not clipped), you might be able to make it a bit better. >> >> Increasing the bit rate is a major job - but you could try other open >> source codecs like Opus. >> >> - David >> On 18/12/20 8:39 am, Jesper Norberg wrote: >> >> 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 >>> >> >> >> _______________________________________________ >> 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 >> > > > _______________________________________________ > 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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