DSP API integration
Posted: Wed Jun 06, 2012 1:50 pm
hello,
I'm trying to integer a part of sc_dsp_filters of github to use biquad filter on the demo application card.
No compilation error. But the audio output is a disaster. I was thinking :
- I am completely wrong and it is not really possible to use the biquads API as easy ?
- I not using the good parameters in my coeffs calculation ? (makecoeffs.java)
i try different solution for the coeffs as "MakeCoeffs -low 400 -fs 96000 -bits 30" fs 96000 as the sample rate and bits 30 because of the volume format in Q2.30 fixed point, i was thinking that the sample is in the same format, seem not...
the xmos website mentioned "DSP processing *
* Optional free software components available from XMOS"
so it must be possible.
any idea ?
thanks,
I'm trying to integer a part of sc_dsp_filters of github to use biquad filter on the demo application card.
No compilation error. But the audio output is a disaster. I was thinking :
- I am completely wrong and it is not really possible to use the biquads API as easy ?
- I not using the good parameters in my coeffs calculation ? (makecoeffs.java)
i try different solution for the coeffs as "MakeCoeffs -low 400 -fs 96000 -bits 30" fs 96000 as the sample rate and bits 30 because of the volume format in Q2.30 fixed point, i was thinking that the sample is in the same format, seem not...
the xmos website mentioned "DSP processing *
* Optional free software components available from XMOS"
so it must be possible.
any idea ?
thanks,