Search found 65 matches
- Wed Jun 07, 2017 9:39 am
- Forum: FV-1 hardware questions
- Topic: Crystals wont oscillate
- Replies: 7
- Views: 6589
Honestly the best thing is to remove all components and clean everything or start with a new board and abandon these ones. You will not be able to clean under the chip and other components unless you have access to a commercial level defluxer which uses hot deionized water under pressure. Went over...
- Tue Jun 06, 2017 3:53 pm
- Forum: FV-1 hardware questions
- Topic: Crystals wont oscillate
- Replies: 7
- Views: 6589
Flux is OK AS LONG AS IT IS NOT WATER SOLUBLE! Water soluble flux is conductive so just a tiny bit under the chip can cause problems, it also tends to be corrosive and can damage the PCB. Damn.. Turns out my Flux is water soluble, so this could be the issue. How would I go about removing residue be...
- Tue Jun 06, 2017 12:58 pm
- Forum: FV-1 hardware questions
- Topic: Crystals wont oscillate
- Replies: 7
- Views: 6589
Crystals wont oscillate
I have a setup where my FV-1 chip reside on a daughter-board together with the clk crystal, crystal cap and the decoupling capacitors. This board connects with header pins to a "main"-board which houses the power regulator (LM1117), more decoupling capacitors and all other necessary circui...
- Fri Mar 31, 2017 1:15 am
- Forum: Algorithm development
- Topic: Asymmetric Distortion/Limiter
- Replies: 0
- Views: 36863
Asymmetric Distortion/Limiter
Simple and interesting distortion block: rdax adcl, -1 ; Read & invert input skp GEZ, 1 ; If neg sof 0.01, 0 ; Soft cut negative wave segment sof -2, 0 ; Make up gain loss, fix phase ; rdax adcl, -1 ; Crossmixer mulx pot0 rdax adcl, 1 ; wrax dacl, 0 ; output, clear acc Only one phase of the soun...
- Thu Mar 30, 2017 2:58 am
- Forum: Algorithm development
- Topic: Slow Random Noise
- Replies: 6
- Views: 9780
Had another look at the code and realized that the increment for PRN wasn't stored back in the PRN register. For a reason I don't know the code wont work when the increment is too small. The code below: pot0 sets the volume of the noise output and (pot1 + 0.00001) sets the rate at which new noise sa...
- Wed Mar 29, 2017 2:26 pm
- Forum: Algorithm development
- Topic: Slow Random Noise
- Replies: 6
- Views: 9780
I'm aware of the other LFSR noise generator threads, but I'm interested in the counter functionality in the above code that slows down the random value generation rate. The original noise gen from the other thread works fine for me, but as Jack states this code is unverified (and I get a static valu...
- Wed Mar 29, 2017 6:08 am
- Forum: Algorithm development
- Topic: Slow Random Noise
- Replies: 6
- Views: 9780
- Tue Mar 28, 2017 2:20 am
- Forum: Algorithm development
- Topic: Calculating the delay/latency of a pitch shifted signal
- Replies: 2
- Views: 4107
- Mon Mar 27, 2017 8:44 am
- Forum: Algorithm development
- Topic: Calculating the delay/latency of a pitch shifted signal
- Replies: 2
- Views: 4107
Calculating the delay/latency of a pitch shifted signal
I'm toying around with the +/- 1 octave program (AN0001-4.spn) from the AN0001 appnote: http://www.spinsemi.com/Products/appnotes/spn1001/AN-0001.pdf I've noticed that the delay/latency of the pitch shifted signal somehow depends on the amount of pitch shift. How would I calculate the amount of late...
- Thu Mar 23, 2017 11:20 am
- Forum: FV-1 software questions
- Topic: Resetting a sine LFO
- Replies: 3
- Views: 6667
- Thu Mar 23, 2017 9:16 am
- Forum: Algorithm development
- Topic: Audio input as delay modulation source?
- Replies: 5
- Views: 6085
- Thu Mar 23, 2017 8:23 am
- Forum: Algorithm development
- Topic: Audio input as delay modulation source?
- Replies: 5
- Views: 6085
Thank you for looking it over! Yes I think the errors are due to the copy/paste. Compiled without trouble on my pc (clean, unaltered output) you are also clearing the acc after writing the sin0 range so I have changed that to keep the value in the acc for the next line to write to the sin0 rate. The...
- Thu Mar 23, 2017 7:12 am
- Forum: Algorithm development
- Topic: Audio input as delay modulation source?
- Replies: 5
- Views: 6085
- Thu Mar 23, 2017 6:34 am
- Forum: Algorithm development
- Topic: Audio input as delay modulation source?
- Replies: 5
- Views: 6085
Audio input as delay modulation source?
Hi So I'm trying to use the incoming audio signal to modulate a vibrato effect (instead of using an LFO). My idea was to set sin0 to 0Hz, write the audio to sin0_range and use the cosine (max at zero?) as the modulation source for the vibrato (delay). My code does not create any vibrato, but here it...
- Thu Mar 23, 2017 3:01 am
- Forum: Algorithm development
- Topic: Writing values directly to SIN0_RATE and SIN0_WIDTH
- Replies: 3
- Views: 5166