Search found 141 matches
- Thu Oct 14, 2021 2:37 am
- Forum: Algorithm development
- Topic: Aliaser
- Replies: 14
- Views: 28455
Re: Aliaser
Well, I finally got it sorted out. Ran a desk test, pen and paper and looked the evolution of the registers. fptr generates the "virtual clock" that takes samples and manages the interpolation part. It's a bit different from other algos with interpolation but it does the job really well. W...
- Tue Oct 12, 2021 2:32 am
- Forum: Algorithm development
- Topic: Aliaser
- Replies: 14
- Views: 28455
Re: Aliaser
Well it has almost been 11 years since I wrote this but it looks like I am using fptr as an interpolation coefficient since it is updated every real sample period. Yeah Frank, a long time, sorry to bring it up. Took me 9 years to check it out and read the code line by line :mrgreen: . I drew a bloc...
- Mon Oct 11, 2021 10:33 am
- Forum: Algorithm development
- Topic: Aliaser
- Replies: 14
- Views: 28455
Re: Aliaser
Bringing up an old thread!. I was looking at this code and can't get my head around the interpolation portion. I understand that between the pot and fptr you decide to take a new sample or not, but not how is interpolated to "fill the holes" between samples. Any thoughs? Maybe I'm missing ...
- Wed Aug 04, 2021 10:48 am
- Forum: Algorithm development
- Topic: WRLX and WLHX coeffient equations
- Replies: 9
- Views: 21828
- Fri Jul 16, 2021 2:24 am
- Forum: FV-1 software questions
- Topic: Hex representation of S1.14 and S1.9format
- Replies: 2
- Views: 6091
Re: Hex representation of S1.14 and S1.9format
Oh, how can I forgot the 2s complement!!!. Thanks Frank, all clear now.
- Thu Jul 15, 2021 2:56 am
- Forum: FV-1 software questions
- Topic: Hex representation of S1.14 and S1.9format
- Replies: 2
- Views: 6091
Hex representation of S1.14 and S1.9format
I was studying the different formats for the signed fixed point values in the SpinASM Manual and came across the following table: S1.14 Real -2 -0.00006103516 0 0.00006103516 1.99993896484 Hex $8000 $FFFF $0000 $0001 $7FFF S1.9 Real -2 0.001953125 0 0.001953125 1.998046875 Hex $400 $7FF $000 $001 $3...
- Mon Jul 12, 2021 2:29 am
- Forum: FV-1 software questions
- Topic: (1-k)*sample[addr]
- Replies: 7
- Views: 13666
Re: (1-k)*sample[addr]
Go to the main Spin web page, and in the FV1 section there's a PDF "Basic of LFO's in the FV1", there's the answer to your question.
- Mon Jun 28, 2021 3:23 am
- Forum: FV-1 software questions
- Topic: Reading from delay memory using ramp signal
- Replies: 6
- Views: 7134
- Fri Jun 25, 2021 2:27 am
- Forum: FV-1 software questions
- Topic: Reading from delay memory using ramp signal
- Replies: 6
- Views: 7134
Re: Reading from delay memory using ramp signal
Check the Delay Servo Technique!
- Fri Jun 25, 2021 2:22 am
- Forum: FV-1 software questions
- Topic: CLR required before LDAX?
- Replies: 11
- Views: 9571
Re: CLR required before LDAX?
In the Spin Asm manual you have it explaned, on the Operand data Types part: Signed fixed point values are primarily used as coefficients (Operand2) for the multiply portion of an instruction. Depending on the actual opcode they may be in one of three different formats, "S1.14", "S1.9...
- Sat May 29, 2021 2:50 am
- Forum: Algorithm development
- Topic: WRLX and WLHX coeffient equations
- Replies: 9
- Views: 21828
Re: WRLX and WLHX coeffient equations
I looked into it several times and try to correspond the K2 and -Ks coef to the RDFX and WRHX in a filter. The RDFX can be calculated Kf = 1- e^(2.pi.freq.t), being t 1/sample rate. There's an aproximation of Kf = 2.pi.F / Fs too And for the WHRLX/WRLX there's no mention of the coefficient or the -K...
- Fri May 28, 2021 6:44 am
- Forum: Algorithm development
- Topic: WRLX and WLHX coeffient equations
- Replies: 9
- Views: 21828
WRLX and WLHX coeffient equations
I was looking for the equations to calculate the WRLX and WRHX coefficents to apply in single pole low and high pass filter but I couldn't find them anywhere. Not in the forum or in the knowledge base. Maybe I'm searching in the wrong way, but someone can point me out in the right direction?. Also l...
- Wed Feb 03, 2021 11:22 am
- Forum: FV-1 hardware questions
- Topic: Effects only working when clipping.
- Replies: 4
- Views: 12939
Re: Effects only working when clipping.
It's a must!!. Must be the 5 min your mind needs to reset and clearly see the issueDigital Larry wrote: ↑Tue Feb 02, 2021 6:40 pm I almost always have to post to a public forum before finding things like that.
- Thu Jul 23, 2020 4:31 am
- Forum: FV-1 hardware questions
- Topic: NAMM 2017
- Replies: 41
- Views: 77130
Re: NAMM 2017
I'm waiting for mine to arrive!!
- Wed Jun 17, 2020 1:41 pm
- Forum: FV-1 hardware questions
- Topic: Some things I've learned about the FV-1
- Replies: 19
- Views: 34144
Re: Some things I've learned about the FV-1
Obviusly makes sense. Is one of the most common regulators around with the 78L33. Any recommendations about an LDO?.