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

[Cinaed Simson]

On 05/14/2017 01:06 PM, Fernando wrote:
> 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

Try turning on the throttle and see what happens.

> 
> 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
>> <mailto: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
>>     
>> <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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>>
> 
> 
> 
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