Re: [Discuss-gnuradio] GFSK mod/demod does not work OK with wav file

[Fernando]

With 8 samples/symbol there was aU and CPU at 94% (I have three AMD cores)
I have reduced it to 2 s/s as suggested Cinaed, then aU dissapear and CPU is at 70%, sound is a little better but still intermittent.
File is sampled at 44100 and with direct connection from wav file source to audio sink (everything else disabled) it plays fine

regards



On 12/05/17 22:51, Ben Hilburn wrote:

Hi Fernando -

Are there are errors / warnings / printouts happening in your GRC log window or in your terminal? Do you see `aU` getting printed, by chance?

Also, just to be certain, your wavefile was recorded at 44.1kHz and not at something like 48kHz?

Cheers,

Ben

On Fri, May 12, 2017 at 10:14 AM, Fernando <address@hidden> wrote:

I'm playing with a GFSK modulator demodulator from here:

https://www.scribd.com/doc/254559988/Gaussian-Frequency-shift-Keying-With-GNU-Radio

It works fine when transmitting a cosine, but when I transmit a audio signal (everything the same) it sounds bad, with noise and intermittent sound.

What am I doing wrong?



regards





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