Does anyone have the experience on this ? I can receive and decode 1200 bps signal, but still no luck with 9600 bps signal :(
On Thu, Oct 15, 2015 at 2:04 PM, Hoang Nguyen Tran <hoangn...@gmail.com> wrote: > Hi, > Regarding to this problem, I tried to use UDP sink to replace Audio sink > or Wave file sink, then try to receive audio in on another computer with > decoding software by VLC. > > When I run the VLC with command : vlc --demux=rawaud --rawaud-channels=1 > --rawaud-samplerate=48000 udp://@:7355 > I was able to here the sound coming from VLC, however, the sound was > choppy, the same with audio under-run. Does anyone have explanation for > this ? > > I set the UDP sink with these parameters: > > Payload size :1500 > Send NULL Pkt as EOF : True > Vec length : 1 > > Thanks a lot, > Hoang > > On Thu, Oct 15, 2015 at 10:53 AM, Hoang Nguyen Tran <hoangn...@gmail.com> > wrote: > >> Hi Marcus, >> >> I put a variable for that, and usually I put in 24kHz for signal >> bandwidth in Low Pass filter. >> >> >> >> >> On Thu, Oct 15, 2015 at 10:46 AM, Marcus Müller <marcus.muel...@ettus.com >> > wrote: >> >>> Hi Hoang, >>> >>> are you sure you want to reduce the FM signal bandwidth to 6kHz in the >>> Low Pass filter? >>> >>> Best regards, >>> Marcus >>> >>> >>> On 10/15/2015 04:38 PM, Hoang Nguyen Tran wrote: >>> >>> Hi Tom, >>> Thank for replying, Below is my narrow band fm receiver base on nbfm rx >>> from http://www.oz9aec.net/ >>> I was able to receive and decode with ISS and other sat with 1200 baud >>> rate, but did not success with 9600 baud rate. >>> >>> On Thu, Oct 15, 2015 at 10:11 AM, Tom Rondeau <t...@trondeau.com> wrote: >>> >>>> On Wed, Oct 14, 2015 at 2:47 PM, Hoang Nguyen Tran <hoangn...@gmail.com >>>> > wrote: >>>> >>>>> Hi all, >>>>> >>>>> I have question related to audio bandwidth cutoff. >>>>> Yesterday, I received very good signal from STRaND satellite 9600 bps, >>>>> FSK modulation. >>>>> I used audio sink to record the signal then used it for decoding. >>>>> However, I was unable to decode signal, then I ask some another ham >>>>> radio expert and he said because of my audio bandwidth cut off for some >>>>> unknown reason is 3000 so it is unable to decode. >>>>> >>>>> Do anyone know why and how can I change the audio bandwidth cut off ? >>>>> I used the normal WAV file sink with set up: sample rate 48000, N >>>>> channels : 1 and Bít per sample 16. >>>>> Thank for your time and I appreciate any comment. >>>>> >>>>> Best regards, >>>>> Hoang >>>>> >>>> >>>> Hoang, >>>> >>>> It's nearly impossible to help you here since you've given us no >>>> information on your setup. Yes, sample rates and filter bandwidths matter >>>> in this. You've likely got some numbers in your flowgraph wrong. >>>> >>>> Tom >>>> >>>> >>> >>> >>> >>> -- >>> -HoangNT- >>> PhoneNo : +841654248782 >>> Skype : hoangastro >>> FB : https://www.facebook.com/kenshin.rorouni >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing >>> listDiscuss-gnuradio@gnu.orghttps://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >> >> >> -- >> -HoangNT- >> PhoneNo : +841654248782 >> Skype : hoangastro >> FB : https://www.facebook.com/kenshin.rorouni >> > > > > -- > -HoangNT- > PhoneNo : +841654248782 > Skype : hoangastro > FB : https://www.facebook.com/kenshin.rorouni > -- -HoangNT- PhoneNo : +841654248782 Skype : hoangastro FB : https://www.facebook.com/kenshin.rorouni
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