Sequencing and timer modules

Shifrin · 26 Mar 2005

You might like to check out the timers / animation in the Examples forum 🙂

Also, when you say 'Keyboard' are you talking about a midi controller keyboard or your computer keyboard as you can trigger midi notes with the computer keyboard too 🙂

Shif.

pdelrieu · 26 Mar 2005

Thanks for your fast reply, for the PC keybord I didn't see. For the timer, very good. I think I have to dive into synthmaker possbility. One other question : Is it normal that I have a lot of audio clip when playing the exemple synth ? I don't have these problems with other soft.

Regards Philippe

stefan · 26 Mar 2005

The clipping within SM is quite nasty, basicly it occurs _after_ converting the audio to 16bit data, and it doesn't even do any clipping. Which means that values "wrap around".

So, this means that when you get a value that is higher than the highest positive 16 bit value (signed 16 bit), it will wrap around and become a negative value. Example:

Max value is 32767, and min value is -32768. If you try to play a sine that has a too loud amplitude, lets say 32768, it will instead of clip to 32767 go -32768 for a few samples, resulting in a very nasty distorted sound. This is what happens within SM.

There should never be any clipping / signal limiting automatically within SM, but it'd be nice if there was clipping/limiting in the DS Out module 🙂

Meanwhile, just lower the volume of the synth so that it doesn't distort.

pdelrieu · 26 Mar 2005

I try with a sin wave, a float mult with 0.5 and less as multiplicator, the signal diminish but I still have a lot of clipping.

Have you any idea.

Regards

Philippe

stefan · 26 Mar 2005

Uhm. No. Could you maybe post the schematic giving the clipping and also an mp3 of how it sounds?

pdelrieu · 26 Mar 2005

Hi, to be able to recrod it I generate a VST with the synth and load it in my sequencer. The clipping disappeared. So I think it come from the DS out module and my configuration. I have a Lynx One. What it the type of driver needed by Synthmaker ? My card work best with ASIO driver.

I found another issue. I test the plug in in my sequencer and I found that all note off generate clip which is in theory normal. Is there a way to force the sin to stop at 0 level and not when the note off arrive ?

I have an mp3 and an image of the module but I don't know how to post it.

Regards

Philippe[/img]

jorge · 26 Mar 2005

pdelrieu wrote: What it the type of driver needed by Synthmaker ? My card work best with ASIO driver.

We've had the ASIO in and out components nearly ready for quite a while but we decided to release drivers slowly as they seem to cause the biggest problems. The existing DirectSoundOut seems to be quite stable now so DS in, ASIO in/out will probably be released soon.

pdelrieu wrote: I found another issue. I test the plug in in my sequencer and I found that all note off generate clip which is in theory normal. Is there a way to force the sin to stop at 0 level and not when the note off arrive ?

The adsr component has a boolean input to indicate if you want a note to be held after noteoff until the end of release. If you dont use an adsr with the boolean input set to true notes will terminate at noteoff.

pdelrieu wrote: I have an mp3 and an image of the module but I don't know how to post it.

If the problem is that you dont have a webhost to upload it to, just email it to us and we'll put it online and send you back a link. You can either PM me or email to [email removed].

pdelrieu · 26 Mar 2005

hi, I had some problem with direct sound drivers. I think the clip problem come from my driver. I will way to test fully when ASIO driver will be release. Thank's for the ADSR tip, I will continue to dive into synthmaker because I get lot of fun to use it.

For the upload thank, I don't have a web host. These is no need now but if I have some stuff to share, I'll contact you.

Thank you for your help and fast reply.

Regards

Philippe