[Hackrf-dev] GNU Radio and HackRF and Latency

[Mitja kocjančič]

Thanks and How I can aplpy this patches?

PS: what do you think with dropped samples?

PPS: @<tamercelik at gmail.com> I can't use HackRF in virtualized enviroment

2015-12-04 17:48 GMT+01:00 Mike Walters <mike at flomp.net>:

> The issue is caused by large sample buffers, mainly the USB buffer size.
>
> I've worked around it before by just patching gr-osmosdr and libhackrf to
> use smaller buffers. This isn't a great fix because it will increase chance
> of dropped samples at high rates. Here are the patches:
>
> https://github.com/miek/gr-hubsan/blob/master/hackrf-16k-buffer.diff
> https://github.com/miek/gr-hubsan/blob/master/gr-osmosdr-16k-buffer.diff
>
> You may also need to play around with GNURadio max. buffers as discussed
> here:
>
> https://gnuradio.org/doc/doxygen/page_operating_fg.html#latency
>
>
> On 4 December 2015 at 13:47, Mitja kocjančič <veso266 at gmail.com> wrote:
>
>> Hi I am transmitting FM Modulated signal on 76 Mhz  and recieving it on
>> my Sangean ATS 909X
>>
>> The signal is normal FM Radio signal with RDS and Stereo but for some
>> reason there is 1 second delay (when I change song for instance it takes 1
>> seconds for my Radio to notice that)
>>
>> Thats strange to me because I always thought that FM Modulation happens
>> in real time and when you say something into microfone radio will pick
>> it immediately.
>>
>> I know that 1 second delay happens with DAB (because you must encode
>> audio and then decode it) but not on FM
>>
>> So could anybody be so kinf and tell me the reason why this delay happens
>> and how to overcome this.
>>
>> Thanks for Anwsering and Best Regards
>>
>> _______________________________________________
>> HackRF-dev mailing list
>> HackRF-dev at greatscottgadgets.com
>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>>
>>
>
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