Spin Semiconductor

Cool. Hey Slacker I have another problem, this time with the led rate indicator. When i use it with full memory it works ok, but when i'm using it with 700 ms, a horrible noise is present (an oscillation). Even if i don't write led register to any DAC. For 700 ms i'm using: ;Taptempo rate indicator...

Cool. Hey Slacker I have another problem, this time with the led rate indicator. When i use it with full memory it works ok, but when i'm using it with 700 ms, a horrible noise is present (an oscillation). Even if i don't write led register to any DAC. For 700 ms i'm using: ;Taptempo rate indicator...

If you want a smaller maximum delay you need to change the following part of the code. LOW: sof 0,0.064 wrax rmp0_rate,0 ;set rmp0 rate to 1Hz cho rdal,rmp0 ;read value of rmp0 The sof 0,0.064 sets up a 1Hz ramp to give delay time up to 1 second, so for 700ms you change the sof command to sof 0,0.0...

Slacker, one more question. What if i'm not using the whole delay mem (let's say just 22938, or max delay time=700ms). Do i need to modify the tap tempo code to fit the 700ms limit?

That method was used on the SKRM board example schematics, not the dev board. Since the '148 can drive high and low you probably don't need the pull-up resistors on S0, S1 and S2. Frank, please correct me if i'm wrong, but i can see that R13,R14 and R15 are pull down resistors in the dev board: htt...

Hi to all, I would like to know how to correctly hook up a 74HC148N to pins S0,S1 and S2. Do i need to put some pull down resistors or not? I see the FV1 dev board schematic and it was done with this method.
Thanks!

Yes, I wired the pot/switch combination up the way we discussed in the hardware thread, but I think the problem would be that I also put a resistor on both ends of the pot. I expect this is not allowing the pin to get close enough to the +rail to work. Sorry a little off topic in the software area....

Thanks Frank for checking this out. Slacker, i will try the idea of using the malekko reverse reverb and see what happens. I liked the filter idea also. Another solution could be a fade in every reset of the backwards ramp. Is there any counter or flag that i can use for detecting the reset? Maybe a...

Ok i've tried two versions with no results, in this case i got a noisy output again: delayd mem 4096 ; Down delay temp mem 1 ; Temp location for partial calculations ; skp run,START sof 0, -0.25 wrax rmp0_rate,0 wrax rmp0_range,0 ; ; START: ldax ADCR ; Write it to left delay and clear ACC wra delayd...

Since the FV-1 wasn't intended to do this it is really a hack. Try to code it just like a pitch shift but use the sof 0, -0.25 wrax rmp0_rate,0 in an initialization block to set the negative coefficient properly, set range to the desired range. I have not tried this so it is an experiment. Frank i'...

Hi, I've been reading the AN-001 and tried to understand the use of the ramp and crossfade coefficients but I couldn't apply it to the reverse echo. A couple of questions: *Do I need to interpolate the ramp? *How do i make a crossfade coefficient to hide the glitch? Is this function something to do ...

Hey Larry, Is there any chance to hear a reverse delay using the spinCAD?

What if i record my signal with a fade in to the delay mem. Since it will be played backwards the glitch at the end will be less audible.

Im looking for something like this:

http://m.youtube.com/watch?v=fCWECmTX9dE

Hi, I would like to know if there 's any way to get rid of the noise when reading the delayed signal backwards. It sounds like the delayed signal was cut off abruptly.
Also is there any way to set delay tempo with this code? [/quote]

Hi! Regarding this idea, i didn't get how to implement the filtered feedback into code. If i just filter the echo feedback with a LP how can i get the repetitions become darker? The term "analog" I consider the "deterioration" of each successive repeat. As is done in analog devic...