Spin Semiconductor

Is there any reason why a 24LC64 eeprom wouldn't work with the FV-1? Our manufacturer stocks this part and we'd like to use it rather than bring in the 24LC32.

Very sad news. From the article, it seems Keith was an amazing individual. My condolences to all close to him.

If I'm going to run the FV-1 in mono, what should I do with the unused input and output pins?

I think this problem may not be fixed (or I'm confused on how JAM works). I'm sending RMP0 out the DAC and watching it on a scope. With <wldr 0, 1023, 4096> I get a ramp starting at 2.25V and dropping to 1.5V at a rate of 2 Hz. I've written a program so JAM is run anytime one of the pots on the dev ...

Has anyone got this to work?

I'm a little stuck. Can anyone help me? I have a signal that is either 0.0 or 1.0. I'd like to add variable decay to its falling edge (between 20 ms and 500 ms) without affecting the quick attack of the signal's rising edge.

The FV-1 uses a down counter that is added to the address in instructions like RDA and WRA, counter is decremented once at the start of each sample period. So you might try using a counter that is incremented by 2 each period. How exactly would this be done? I tried this but it doesn't seem to work...

Why is it the sample echo program distorts as you turn the echo time pot? Does it have to do with address values being inexact after being multiplied by POT1? Also, is there any reasoning to the values chosen for the min and max positions in the delay line? I can't seem to figure it out. And one mor...

I know it's not ideal, but when laying out the FV-1 on a single sided board, which is better: a) connect pin 8 to pin 23 (+VDD) directly under the chip and split the ground plane below the chip b) have a continuous ground plane below the FV-1 and have +VDD loop around the board to connect pin 8 to p...

Is there anyway to do conditional MEM or EQU statements? I'm hoping to do two reverbs (with different allpass sizes) in one EEPROM memory slot.

Thanks for the tips! I have a Regalia-Mitra algorithm up and running. It certainly is working much better than a biquad for what I'm trying to do.

That does work better, although I still can only go down to 150Hz before things start to get ragged. My goal is to be able to do a 5 dB, half octave boost at 50 Hz. Here's where I'm at if anyone has any improvements to add: ;Shahin Etemadzadeh September 27, 2007 ;biquad filter, using registers for 1...

I'm trying to get some EQs going using biquad filters with coefficients generated with the equations from: http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt They seem to work fine until I start going below 500Hz. I think the problem might be in the precision of the multiply of an RDA instruction (...