Hi Steve,
What about the center frequency of FIR filter, which initialized by
quisk_filt_cfInit? I see the default is 1500? How to change?
Thanks, I tried to follow your way? But result in an error.
Vào Th 6, 14 thg 9, 2018 vào lúc 14:10 Đích Kiều <dich...@gmail.com> đã
viết:
> Thank you!
>
> Sent from my iPhone
>
> On Sep 14, 2018, at 11:49 AM, Steve <coupaydevi...@gmail.com> wrote:
>
> That's probably a good option to add. When I use OFDM on FM
> (experimentally), I move the frequency center left, to narrow the bandwidth.
>
> Look at ofdm_mod.c and add:
>
> if ((arg = opt_exists(argv, argc, "--fcentre"))) {
> ofdm_config->fcentre = atof(argv[arg+1]); /* Centre Frequency */
> } else {
> ofdm_config->fcentre = 1500.0;
> }
>
> probably the same in ofdm_demod.c
>
>
>
> On Thu, Sep 13, 2018 at 11:02 PM Đích Kiều <dich...@gmail.com> wrote:
>
>> Hi everyone, Hi David, Hi Bruce,
>>
>> I'm working in FreeDV on the old telephone network. I'm run into a
>> problem that I can't work with full-duplex because I think, due to the
>> hybrid circuit in the PSTN network. My solution is to adjust the center
>> frequency of the FreeDV 700D with different for TX (1000Hz) and RX
>> (2200Hz). I hope this help, I'm trying.
>>
>> I need some advice from all of you about that. If it's OK. How can I
>> adjust the center frequency of the FreeDV?
>>
>> P/ S: I can't use dial modem because I need fast sync.
>> Thanks very much.
>>
>> Email : dich...@gmail.com
>> SĐT : 0904736189
>> _______________________________________________
>> Freetel-codec2 mailing list
>> Freetel-codec2@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2
>>
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>
--
*Kiều Việt Đích*
*Công ty 129 - Ban cơ yếu chính phủ*
Email : dich...@gmail.com
SĐT : 0904736189
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