Messages

76

preenfm2 and preenfm3 / IM velocity: stupid question

« on: September 25, 2020, 05:02:29 PM »

Here is my Stupid Question.

If IM1 is set to 16, and the IM1 velocity is also set to 16, and the note is played at full velocity, does that make the actual IM1 value go 'higher' than 16? In other words, 16 is not actually the maximum IM value? So even when set to 'maximum' of 16, the actual IM value will be 16 plus velocity (the velocity is still 'injected' to use the phrase in the manual)?

I can hear a big difference comparing IM16 v16 to IM16 v0 with the note played at full velocity.

I just ask because normally if a setting is set to it's maximum value, it can't be modulated to go 'higher'.

77

preenfm2 and preenfm3 / Re: Audio Output from SMD version

« on: June 13, 2020, 12:05:16 PM »

I hope this thread helps someone learn about this before purchasing an SMD version. I haven't found anywhere else where this is discussed to inform potential buyers. It would definitely have changed my decision if I had known.

78

preenfm2 and preenfm3 / Re: Audio Output from SMD version

« on: June 07, 2020, 03:52:26 PM »

It's "bad" from the perspective that Xavier developed the PreenFM2 and then someone else used his work to develop a different version without his approval. Unfortunately it is hard to know that without a bit of investigating.

The person who made the SMD version did actually make a thread on this forum.

In theory I agree 'building it is half the fun' however not all of us are physically able to do that so I don't think it's fair to imply someone should not have the chance to use such a great synth. I think people who are 100% physically capable easily forget that not everyone is so lucky.

The SMD unit itself is fine, Xavier said in this thread that the sound issue I was worried about is the same on the original version.

79

preenfm2 and preenfm3 / Re: Audio Output from SMD version

« on: May 20, 2020, 08:35:55 AM »

OK thank you Xavier. Sounds like it's normal. I appreciate your help!

80

preenfm2 and preenfm3 / Re: Audio Output from SMD version

« on: May 20, 2020, 08:29:05 AM »

OK, so it is related to what you said:

"The pfm2 DAC is 12 bits + 6 bits that are added with the usage of a divider resistor  bridge. Bad choice of resistors here can increase this effect."

Can I find the information somewhere on best choices of resistors to see if this is a problem?

81

preenfm2 and preenfm3 / Re: Audio Output from SMD version

« on: May 20, 2020, 08:04:22 AM »

Hi Xavier

My patch is exactly as you suggest:  only a single carrier, all other OPs turned off, velocity at 0, no IM and no modifiers assigned in the matrix. Just a pure single voice sine wave.

Is the sound in the recording as good as I would get from a PreenFM2 using just a sine wave? I understand this is not really the intended purpose PreenFM2 and can get more pure sine waves from other machines. ( I just love the sound of pure sine waves!)

But I really just wanted to know if it was an issue with the SMD version, or with my particular unit. If it is normal behaviour then I can stop worrying about it!

82

preenfm2 and preenfm3 / Re: Audio Output from SMD version

« on: May 19, 2020, 05:08:02 AM »

Thank you. I found that thread, I will try posting there but it hasn't been active for 2 years.

I bought it through the forums at Elektronauts. Who knows, maybe it's just one faulty unit. I'd love to hear from any other SMD version owners whether they get the same problem with the sine wave output.

Sign me up for that wristwatch!

83

preenfm2 and preenfm3 / Re: Audio Output from SMD version

« on: May 19, 2020, 12:56:59 AM »

Oh that isn't great. How can someone be selling a product called 'PreenFM2' if it has nothing to do with the developer? I get that it's open source but it doesn't seem ethical.

I knew before I bought it was a SMD version  but didn't know that meant it wasn't even supported. 

As for my unit, I guess I'll squeeze what I can out of it, and save for a proper PreenFM2.

If someone could compare the audio output of a single sine wave from a proper PreenFM2 to the output in the soundcloud link above I would really appreciate it.

Thanks/

84

preenfm2 and preenfm3 / Audio Output from SMD version

« on: May 18, 2020, 05:40:18 AM »

Hi, new forum member here.

First, the Preen FM2 is fantastic, thank you Xavier and everyone else who keeps developing new features.

However I think I made a mistake, I jumped in and bought a pre-built SMD version without being aware of the differences. I have linked a recording of a single sine wave, 1 voice, with no modulation and all other operators off. There is a noticeable 'phaser' sound especially as it fades out, that I don't think should be there with pure sine wave (other synths sine waves don't have this sound).

https://soundcloud.com/user-335915384/preen-output

I also tried splitting that sound file into separate mono tracks and it is audible on both sides.

Is this normal for the PreenFM2? Is this maybe a problem inherent in the SMD build and specifically the use of a single audio output jack? I don't think it is aliasing as the digital processing should be the same?

The general functioning of the unit in terms of MIDI control and parameter settings all seems to be good.

Am I just being overly sensitive about the sound?

Many thanks