Search found 65 matches

by igorp
Tue Mar 13, 2018 2:43 pm
Forum: Algorithm development
Topic: unconditional SKP
Replies: 8
Views: 10237

Hm , in classic C "|" mean logical OR , so

"skp run|gez|neg" is interpreted as
"skip if run or skip if gez or skip if neg"

and "SKP neg|gez" mean "skip if negative or positive" , so it must be unconditional skip?
by igorp
Mon Mar 12, 2018 2:04 pm
Forum: Algorithm development
Topic: unconditional SKP
Replies: 8
Views: 10237

unconditional SKP

For example, program made calculations and need to go to next part,
I am trying "SKP run|gez|neg|zro|zrc , label" for unconditional jump, but program continued.

Why?

I used "SKP run|gez , label" and it woiked fine for this subrotinue, but i want to understand what was wrong.
by igorp
Mon Feb 19, 2018 4:29 am
Forum: FV-1 software questions
Topic: 2+2*2 = 8? spinasm compiler calculations are
Replies: 2
Views: 3492

Oh, thank you
by igorp
Tue Feb 13, 2018 10:05 am
Forum: FV-1 software questions
Topic: 2+2*2 = 8? spinasm compiler calculations are
Replies: 2
Views: 3492

2+2*2 = 8? spinasm compiler calculations are

sequental in line.
Why?

I spent couple of hours to find mistake why this simple code:

Code: Select all

	rda	delay + 0179/KK , 0.8	
is working incorrectly
by igorp
Mon Feb 05, 2018 6:31 am
Forum: FV-1 software questions
Topic: Reverse delay?
Replies: 47
Views: 96391

4 msec before and 4 msec after zero adress X-fade was enough.
longer falling eat attack

Image
by igorp
Mon Jan 29, 2018 3:29 pm
Forum: FV-1 software questions
Topic: Reverse delay?
Replies: 47
Views: 96391

I am trying to made reverse delay too , wrote own dummy code, it's very close to knutolai one (2Hz ramp LFO from 0 to -1) and now working on crossfades. My scope show what sometimes it's too much "constant voltage" in reversed loop , accumulator saturated and locks , so some experiments we...
by igorp
Tue Jan 23, 2018 5:20 am
Forum: FV-1 hardware questions
Topic: Clock Frequency Range When Driving X1 From a uP
Replies: 2
Views: 5308

i tetsted FV-1 with 48kHz - 490Hz sample rate :)

And 1kHz did noisy, but aduble sound.
by igorp
Thu Dec 14, 2017 4:39 am
Forum: FV-1 software questions
Topic: Phase difference between wet&dry signals
Replies: 2
Views: 4594

i did test patch to test hardware read ADC and send it normal/inverted to DAC
because of delay (1 tick for ADC read and 1 tick for DAC)
Result was no signal cacelation, some lower segment become less loud, and that is all.

You can invert phase in your patches , if needed
by igorp
Tue Oct 03, 2017 11:01 pm
Forum: Algorithm development
Topic: Change reading speed of sample
Replies: 7
Views: 7137

Also, you may write your own ramp LFO. Without crossfades, etc, it's easy -> usual DDS
by igorp
Fri Sep 01, 2017 7:58 am
Forum: FV-1 hardware questions
Topic: NAMM 2017
Replies: 41
Views: 68728

Looks nice, but too little memory :(

For the stereo we need 1+1 second for guitar effects, at least 128kb

Even stm32f407 has 192kb of RAM, about 3seconds on 16bit, with all interfaces , dsp engine, etc and it's inexpensive
by igorp
Thu Aug 31, 2017 7:36 am
Forum: FV-1 hardware questions
Topic: Dirty Encoder Emulator
Replies: 1
Views: 7040

for example Encoder.hex :020000020000FC :1000000009C018951895189518951895189518956C :1000100018951895F8940FE90DBF112406E81127DB :1000200006BD16BD112700270A950000000000003C :10003000000000000000C1F71A95A9F70FE007BB08 :100040000FE204BB02E207B900EE06B9789425D0AE :1000500001D0FDCF35B02314232CF1F0022D16E...
by igorp
Thu Aug 31, 2017 7:31 am
Forum: FV-1 hardware questions
Topic: Dirty Encoder Emulator
Replies: 1
Views: 7040

Dirty Encoder Emulator

My little contrubution. Often beginners has no idea how to make program change easy, so this is little snippet to. It is part of my old AL3201B project https://cs541604.userapi.com/c840122/v840122409/2443d/0t4JlNtmZbM.jpg 1 potentiometer, 1 MCU Atmel Attiny13. R20 oftenly not needed, any resistor 1K...
by igorp
Thu Aug 31, 2017 5:36 am
Forum: FV-1 software questions
Topic: eeprom programer
Replies: 2
Views: 6600

by igorp
Thu Aug 31, 2017 5:18 am
Forum: FV-1 hardware questions
Topic: NAMM 2017
Replies: 41
Views: 68728

Have it build in ADCs and DACs? or FXCore need external codec?
by igorp
Tue Jul 12, 2016 3:43 pm
Forum: FV-1 software questions
Topic: log bug?
Replies: 5
Views: 5792

Thanks, Frank!