Spin Semiconductor

Thanks Larry! I actually just implemented this same concept a bit ago. I was finally able to figure out the scaling for the servo delay thanks to your findings. I have limited the delay time pot to go from ~ 3ms to 27ms and have an lfo which I just added into the "mpos" register. It is wor...

Looking into this more, I think what needs to happen is a linear interpolation as in the ROM Flanger/Rev code, but this goes beyond my scope of understanding for the time being.

I have tried something like this: mem delay 983 ;30ms mem lfo 98 ;3ms skp run,1 wlds sin0,30,98 ;initialize lfo rdax pot0,0.03 ;get pot0 scaled for 30ms of delay wrax addr_ptr,0 ;save to addr_ptr, clear ACC rdax adcl,1 ;get input wra delay,0 ;write to delay, clear ACC rmpa 1 ;get delay sample from a...

I have been running into this same issue. I am wanting to modulate a delay around the address pointer but I have not been successful in any of my attempts. I have tried writing the RMPA value to another delay and modulating it, which works but not quite the way I am wanting. The closest I have come ...

Are labels considered instructions?

Okay, so after spending a bit more time with this code I've come to realize that the issue was being caused by extreme low pass filter (smooth) coefficient values that I was using on delread. I had my smooth coefficient value set at 0.000125 which is roughly .7Hz. I have found that about the lowest ...

skp run,START wlds sin0,100,818 ldax pot1 wrax pot1fil,0 or length*256 mulx pot1fil wrax delread,0 Initializing pot1fil and delread on startup helps to rid the ramping on longer delay times. There is still some ramping that takes place with shorter delay times but is definitely more acceptable. Tha...

I tried initializing pot1fil to pot1's value at start up with no luck. Initializing the address pointer yielded the same results as did clearing the delay mem on start up.

So I know there have been many discussions on this forum on ways to rid zipper noise on a pot when changing the delay time. I have found that a piece of code that Frank worked up seems to do a pretty acceptable job. However, I have noticed upon start up that it sounds as if the delay time is being r...

Excellent! This clears up a lot, thanks Frank!

Hello everyone, I have been seeing the pound sign (#) show up in some code as of late and I was curious if anyone could tell me what it means/what it is used for. Thanks for the help! Here is an example: ;sample reverb program for FV-1 ;minimize number of delays and ops. ;4 aps driving 2 AP-delay lo...

Alright, so I was able to filter the LFSR once it was scaled and that got rid of the distortion. This code is now working beautifully. freq equ reg0 freq2 equ reg1 lp equ reg2 low equ reg3 lowpass equ reg4 lower equ reg5 lfsr equ reg6 lfsr2 equ reg7 temp equ reg8 mono equ reg9 skp run,START sof 0,0....

So I've reworked this a bit to use a 2pole LPF that I snagged from DigitalLarry's SpinCAD code. Using the LFSR output as the frequency control for this filter gives me less distortion. I am convinced now that it is strictly a scaling issue. However, I am still not sure how to properly scale the LFSR...

Using a pot to crossfade between lowpass and high asopposed to the LSFR output, I am able to get a nice clean, filtered signal with no distortion. As soon as the output of the LFSR is applied for the crossfade I get distortion. I'm pretty sure that it is a scaling issue but I am still unclear as to ...

Trying Jack's code yields the same results in terms of producing distortion. Would this be a scaling issue then?