Search found 13 matches
- Mon Feb 01, 2021 8:50 am
- Forum: FV-1 hardware questions
- Topic: Latency in FV-1 hardware
- Replies: 11
- Views: 12229
Latency in FV-1 hardware
Hi, I've been testing on the FV-1 development board and find a latency of about 1.56mS from input to output of the FV-1. I assume that's typical for the FV-1, but haven't been able to find any information about it. That means if you run a dry signal around the FV-1 and mix it back in with the wet si...
- Mon Feb 11, 2019 2:53 pm
- Forum: FV-1 software questions
- Topic: cho rda and sin and cos
- Replies: 2
- Views: 3463
Re: cho rda and sin and cos
Well, that was easy.
Thank you, Frank.
Thank you, Frank.
- Fri Feb 08, 2019 7:50 am
- Forum: FV-1 software questions
- Topic: cho rda and sin and cos
- Replies: 2
- Views: 3463
cho rda and sin and cos
Hi, I'm trying to understand the cho rda command. In the end, I want to make a quadrature sine wave for a chorus, with four waves 90 degrees offset. I created a simple program to try to see the effect of the sin and cos outputs. The input to the FV-1 is a sine wave from a frequency generator. The da...
- Thu Jan 26, 2017 10:07 am
- Forum: FV-1 software questions
- Topic: Truncating a pot input
- Replies: 5
- Views: 9728
- Thu Jan 26, 2017 7:19 am
- Forum: FV-1 software questions
- Topic: Truncating a pot input
- Replies: 5
- Views: 9728
- Wed Jan 25, 2017 1:10 pm
- Forum: FV-1 software questions
- Topic: Truncating a pot input
- Replies: 5
- Views: 9728
Truncating a pot input
I got this code from one of the sample programs. I've tested it, and it works (of course), but I can't figure out why. Pot0 gets multiplied by 2, saved, then used to multiply the input, but the max multiplication is 1, not 2. Where/when does the 2 get truncated to 1? It's a nice trick. Thanks for an...
- Fri May 06, 2016 11:14 am
- Forum: Algorithm development
- Topic: Trying to understand RMS limiter example in knowledge base
- Replies: 5
- Views: 7533
Oops, I see my errors. I made an algebraic error in my previous calculations, putting t in the numerator when it should be in the denominator. And I used the clock frequency instead of the time per sample. Here is the corrected calculation. Clock =32768, so t~0.00003 seconds. K = e^(-2*pi*F*t) ln(K)...
- Mon May 02, 2016 11:33 am
- Forum: Algorithm development
- Topic: Trying to understand RMS limiter example in knowledge base
- Replies: 5
- Views: 7533
Thanks, Larry. I see that the pair of instructions can be used as part of a low pass filter. Using the formula, I come up with a corner frequency of about 36k, which seems awfully high. K = e^(-2*pi*F*t) ln(K) = -2*pi*F*t F = (ln(K)*32768)/(-2*pi) F = (ln(.001)*32768)/(-2*pi) = about 36k Is that pai...
- Mon May 02, 2016 7:56 am
- Forum: Algorithm development
- Topic: Trying to understand RMS limiter example in knowledge base
- Replies: 5
- Views: 7533
Trying to understand RMS limiter example in knowledge base
I can make sense of most of the code in the example below, but I'm confused by the line rdfx avg,0.001 I understand that it is preparing a number to be saved as the running average of the (halved, summed, and squared) inputs. I don't understand how it is getting the average. As I read the code, it l...
- Mon Mar 14, 2016 4:33 am
- Forum: FV-1 hardware questions
- Topic: Very basic questions on chip function
- Replies: 2
- Views: 4973
Re: Very basic questions on chip function
1. Does the FV-1 run one program loop per oscillator cycle, regardless whether the program is 2 lines or 128 lines long? I believe that's true, and the unused lines are filled with no-ops. 2. Does the FV-1 sample and hold the inputs? For example, if you read adcl (or a pot) at two different times/p...
- Fri Mar 11, 2016 11:53 am
- Forum: FV-1 hardware questions
- Topic: Very basic questions on chip function
- Replies: 2
- Views: 4973
Very basic questions on chip function
I've tried to find the answers, but am not certain. 1. Does the FV-1 run one program loop per oscillator cycle, regardless whether the program is 2 lines or 128 lines long? I believe that's true, and the unused lines are filled with no-ops. 2. Does the FV-1 sample and hold the inputs? For example, i...
- Mon Dec 07, 2015 7:59 am
- Forum: FV-1 software questions
- Topic: Lock on files, not visible to Windows
- Replies: 3
- Views: 5628
Thanks, Frank. In the end, it turned out to be a simple solution: I just needed to run spinasm.exe as an administrator. For anyone in the future with the same question, right-click on spinasm.exe, click on the Compatibility tab, and check the box for Run this program as an administrator. BTW I'm on ...
- Fri Dec 04, 2015 9:45 am
- Forum: FV-1 software questions
- Topic: Lock on files, not visible to Windows
- Replies: 3
- Views: 5628
Lock on files, not visible to Windows
I just started using the FV-1. I can make .spn files and assemble, them, and I can make .spj files. They appear as choices to open or save with the SpinAsm IDE, but they have a padlock symbol on them, and they don't show up in the Windows directory. The hex files don't show up either. Other download...