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Old 5th April 2013, 07:26 PM   #821
diyAudio Member
 
Join Date: Mar 2013
Location: Guanajuato, Mexico
Quote:
Originally Posted by rubofdagreen View Post
Proof positive anybody can assemble one. Finding my eye glasses was the hardest part. All systems nominal. The green LED on the left is power on light so I know to shut it down when I quit. I searched Ebay for a Hitachi hd44780 compatible LCD, it works perfect. Case is from DIYAUDIO.com Working on filters now.
Wow! Looks great! Thanks for posting!
Could you give us the price of all the things you needed for this, please?
Like the power supply, case, etc.
And total cost.

Thanks in advance!
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Old 5th April 2013, 08:12 PM   #822
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Location: Guanajuato, Mexico
"In FIR mode you need to generate your coefficients yourself."

What is the maximum boost? 12dB ?

Thx
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Old 5th April 2013, 08:36 PM   #823
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Quote:
Originally Posted by rubofdagreen View Post
Proof positive anybody can assemble one. Finding my eye glasses was the hardest part. All systems nominal. The green LED on the left is power on light so I know to shut it down when I quit. I searched Ebay for a Hitachi hd44780 compatible LCD, it works perfect. Case is from DIYAUDIO.com Working on filters now.
Nice case - Looking forward to getting mine.

BTW has a fellow hifi and horn enthusiast over last night to hear the state of play...
Here's what he wrote;

"Popped over to Steve's last night for a chat and a listen to the changes. Very impressed with his new digital xover - it has enabled him to maintain his SQ and simplify the box count at less expense."
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Old 5th April 2013, 09:09 PM   #824
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Default It works

Just guessing, and I got a really great deal on the PS, $200.00 US over the price of the board. I always order lots of extra parts because I break things. The case was too big and had to be cut down. Still plenty roomy. The case was the biggest expense at about $110.00.
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Old 5th April 2013, 10:33 PM   #825
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Join Date: Mar 2013
Location: Guanajuato, Mexico
Quote:
Originally Posted by rubofdagreen View Post
Just guessing, and I got a really great deal on the PS, $200.00 US over the price of the board. I always order lots of extra parts because I break things. The case was too big and had to be cut down. Still plenty roomy. The case was the biggest expense at about $110.00.
So if i make my case, i should be well under 100$ of expenses on top of the price of the board. Sounds alright!
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Old 6th April 2013, 01:02 AM   #826
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Join Date: Jan 2010
Default Invalid file

I generated this with winfilter. It says invalid file. Any ideas if any of this is useable?
WinFilter version 0.8
WinFilter
akundert@hotmail.com

Filter type: Band Pass
Filter model: Chebyshev
Filter order: 3
Sampling Frequency: 11 KHz
Fc1 and Fc2 Frequencies: 0.010000 KHz and 0.400000 KHz
Pass band Ripple: 1.000000 dB
Coefficents Quantization: float

Z domain Zeros
z = -1.000000 + j 0.000000
z = -1.000000 + j 0.000000
z = -1.000000 + j 0.000000
z = 1.000000 + j 0.000000
z = 1.000000 + j 0.000000
z = 1.000000 + j 0.000000

Z domain Poles
z = 0.907420 + j -0.000001
z = 0.986475 + j 0.000049
z = 0.998642 + j -0.005695
z = 0.998642 + j 0.005695
z = 0.925096 + j -0.207834
z = 0.925096 + j 0.207834
************************************************** *************/
#define Ntap 31

float fir(float NewSample) {
float FIRCoef[Ntap] = {
-0.01318605205881756600,
-0.01213193778689975400,
-0.00989219187616910410,
-0.00632938268982434840,
-0.00134853726907348910,
0.00509090718752715830,
0.01296367287171896500,
0.02216813883223336600,
0.03251713967905618000,
0.04373016282450652200,
0.05542574378511805300,
0.06711347073807252800,
0.07819105999269851400,
0.08791319419546603200,
0.09513813006434222700,
0.09867832723303528200,
0.09513813006434222700,
0.08791319419546603200,
0.07819105999269851400,
0.06711347073807252800,
0.05542574378511805300,
0.04373016282450652200,
0.03251713967905618000,
0.02216813883223336600,
0.01296367287171896500,
0.00509090718752715830,
-0.00134853726907348910,
-0.00632938268982434840,
-0.00989219187616910410,
-0.01213193778689975400,
-0.01318605205881756600
};

static float x[Ntap]; //input samples
float y=0; //output sample
int n;

//shift the old samples
for(n=Ntap-1; n>0; n--)
x[n] = x[n-1];

//Calculate the new output
x[0] = NewSample;
for(n=0; n<Ntap; n++)
y += FIRCoef[n] * x[n];

return y;
}
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Old 6th April 2013, 01:13 AM   #827
Shaun is offline Shaun  South Africa
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Location: Cape Town, South Africa
You must delete all the lines that are not the coefficients. That is, this below, but also remove the commas:


-0.01318605205881756600,
-0.01213193778689975400,
-0.00989219187616910410,
-0.00632938268982434840,
-0.00134853726907348910,
0.00509090718752715830,
0.01296367287171896500,
0.02216813883223336600,
0.03251713967905618000,
0.04373016282450652200,
0.05542574378511805300,
0.06711347073807252800,
0.07819105999269851400,
0.08791319419546603200,
0.09513813006434222700,
0.09867832723303528200,
0.09513813006434222700,
0.08791319419546603200,
0.07819105999269851400,
0.06711347073807252800,
0.05542574378511805300,
0.04373016282450652200,
0.03251713967905618000,
0.02216813883223336600,
0.01296367287171896500,
0.00509090718752715830,
-0.00134853726907348910,
-0.00632938268982434840,
-0.00989219187616910410,
-0.01213193778689975400,
-0.01318605205881756600
__________________
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|||||||||| DON'T PANIC ||||||||||
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Old 6th April 2013, 08:08 AM   #828
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Join Date: Sep 2009
nick,

Does it also mean that you don't need anymore Najda to understand the Apple remote protocol?

I'm still hoping for the apple remote to be a possibility. Other remotes could 'learn' from it.

I'm still having a strange problem whatever remote I use. Occasionally, maybe 1 in 5, the volume buttons get switched. i.e. the down button increases the sound and the up button attenuates. If I carry on pressing things then eventually it rights itself. Baffling. Any ideas?

cheers
james
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Old 6th April 2013, 09:45 AM   #829
chaparK is offline chaparK  Luxembourg
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Join Date: Apr 2010
Location: Luxembourg
Quote:
Originally Posted by rubofdagreen View Post
I got the little cheapie key chain remote off Ebay shown earlier in this thread. It does not have all the function buttons, but otherwise works fine, ie: (no numbered buttons for channels).
Alright. I can't see the receiver module on your pics. Is it hidden behind the small cut on the right hand side of the keypad?

Quote:
Originally Posted by rubofdagreen View Post
I generated this with winfilter. It says invalid file. Any ideas if any of this is useable?
WinFilter version 0.8
WinFilter
akundert@hotmail.com

Filter type: Band Pass
Filter model: Chebyshev
Filter order: 3
Sampling Frequency: 11 KHz
Fc1 and Fc2 Frequencies: 0.010000 KHz and 0.400000 KHz
Pass band Ripple: 1.000000 dB
Coefficents Quantization: float

[...]

Thanks for the link.

As Shaun said, get rid of everything but coefficients themselves and it should be fine.

A quick note about sample rate that you have set to 11 kHz in the example above. Is that intended?

Quote:
Originally Posted by maravedis View Post
nick,

Does it also mean that you don't need anymore Najda to understand the Apple remote protocol?

I'm still hoping for the apple remote to be a possibility. Other remotes could 'learn' from it.

I'm still having a strange problem whatever remote I use. Occasionally, maybe 1 in 5, the volume buttons get switched. i.e. the down button increases the sound and the up button attenuates. If I carry on pressing things then eventually it rights itself. Baffling. Any ideas?

cheers
james
Alright, I keep the Apple remote among the future tasks, but with a lower priority then

I need to find a remote that exhibits this same behavior you're reporting on. Trouble is that all my remotes are behaving fine, so it's hard to guess what could cause the swap of up/down on the volume control.

Can your universal remote output JVC codes instead of NEC ones? If you can test this, that might give me an idea on where to look at.
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Old 6th April 2013, 03:56 PM   #830
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MrDangerous plan on 100 plus the power supply and the case. That way you won't be cussing me. As far as sampling rate goes I know less than nothing about FIR filters go.
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