L/A Synth and LAPC-1

[clinden]

Hi,

i get out my old LAPC-1 (thick dust on it :-) ) and put it in an old PC with isa. The PC itself does nothing (did not have even a OS running). I connected the LAPC-1 with the MCB-1.

On my normal computer I have a SB Audigy and connected the midi out with the midi in on MCB-1.

This works fine, as i can start Ultima7 in a dosbox and hear the sound from the other PC.

I can also play midi-files with sysex in them like the sierra ones.

Next i tried to do some soundediting with L/A Synth. Here I failed.

I cannot upload any of the edited samples to the soundcard.

I thought about some theory, but did not get the clue.

Please tell me if I am wrong, cause the Manual for L/A Synsth is not very good.

If i doubleclick on a timbre and do some editing on it i.e. put some partials off, then do send timbre and audit. I cannot recognize any changes on the sound.

The sound played is the same as slected by standard on the selected midichannel in the audit tool.

What is going wrong? Must I use L/A Synsth on the PC, on which the LAPC-1 is running?

Or did I missunderstood the concepts?

Thnx
Christoph

[Zemus]

You didn't connect both cables. You need to connect a cable to the MCB-1's MIDI out to the Audigy's MIDI in as well.

[clinden]

Hi,

Thanx for the hint, but I am sorry, this does not solve my problems :-(

In the Manual to LAPC-1 ther is on Page 24 a Block Diagram, which shows the connections of the different sections of this Module:

There are MCB-1 on the one hand and the LAPC-1 on the Other Hand.

The LAPC-1 is divided in two Parts: The MPU-401 Part wich is the MCB-1 is connected to, and the LA Sound Section.

The Midi in of MCB-1 is connected to MPU-401 IN which is connected by thru Mode do Out.

The Out of the MPU-401 is connected to LA Sound Section an to Midi Out of MCB-1

If I interpret this Device right, then there is OUT from the LA Sound Section to neither the Computer (which is connected to the MPU-401 Section) nor to the MCB-1

Did anyone get L/A Synth to work with LAPC-1? It works real good for Playing Midis or Games, but if I want to develop some Sounds and try to get into synthtechnologies I cannot use the part.

Hmmm.....

Christoph

[Zemus]

I checked with my module and I can send sysexes with one cable. What kind of program are you using to transmit the sysexes? If the program does it too fast, the LAPC-I will have a buffer overflow and it won't be able to interpret the transmitted sysexes.

[Laust]

The LAPC-I shouldn't be susceptible to buffer overflow problems (like the CM modules it has a revised design/software), and certainly not from just a single patch/SysEx (which wouldn't even tax the MT-32).

Is this the L/A Synth Librarian (Ginosoft) we're talking about?

[clinden]

Hi Zemus, Hi Laust,

thanx for you Input.

1. I can send Sysex over this way to the LAPC-1. I tried it with some games (espaciali Ultima7) and with midis from queststudios.

2. I can not edit sounds with L/A Synth (yes the one from Ginosoft).

@Laust:
Did you attache the LAPC-1 over MIDI to the PC which ist running the L/A Synth, or do you use the LAPC-1 internaly?

@Zemus:
Can you please setup such a configuration (I tried already two cables between the two PCs), and try to edit sounds with L/A Synth? Only if your time alows. If it is possible for you to edit sounds, then there must be another mistake by me.

Perhaps we can handle this online (if it works for you). I can open a RemoteSupportRequest (XP thing), so that you can show me how you managed it. Of course you would not hear anything :-(

Christoph

[Laust]

I don't have an LAPC-I, only MT-32 and CM-32L. However, MIDI-IN via the breakout box should be just as good as having the LAPC-I card in the machine you're running the synth editor on. If it works in games, it should work in Ginosoft's editor, too.

[clinden]

I don't have an LAPC-I, only MT-32 and CM-32L. However, MIDI-IN via the breakout box should be just as good as having the LAPC-I card in the machine you're running the synth editor on. If it works in games, it should work in Ginosoft's editor, too.

The difference could be, that the MT-32 and the CM-32L has MIDI Out. It Seems that LAPC-1 has no MIDI-Out from the MT-32 Sound Module to the Midi-Out breakout box.

So you could push Sysexdata, but you did not get any response from the LAPC-1. Perhaps this might be the clue, why its not working. As I mentioned above: I can upload sysex to the card. I cannot user the L/A Synth for soundediting so that this works.

Perhaps I am to dump to use the tool properly  :lol:

Can you give me a clue, if I am on the wrong road?

Connection: Midi IN and Midi Out are both connected to the Server which is running L/A Synth.
I start L/A Synth. Then load in the Sysexfile for SQ4 (for example).

Then I trie to edit one Timbre. For this I dubleclick in the Timbre Bank on any sound, which copy this timbre to the timbre editor (Timbre Memory).

Now I should be able to press the send timbre Button and aftre this the audit button to hear the sound on my LAPC-1. Right?

I the Audit Parameters i leave erverything untouched (wich means MIDI Ch. 2). After Startup of the LAPC-1 on MIDI Ch.2 is Programm SlapBass enabled. I expected this to Change to whatever sound i have edited in the timbre editor. But after the Procedure of send timbre/audit nothing is changed.

Is there any other Dokumentation online for L/A Synth then the Helpfile? Any Guides are welcome.

I don't know any further .... :-(

[Laust]

I just tried this (changing the PCM sample or Waveform for a random timbre and pressing "Audit") and it worked fine. You don't even have to press "Send Timbre" as it does that automatically when you press "Audit".

I only connected the MIDI-OUT from my SB Live to the MIDI-IN on the CM-32L, too, so the program does not expect feedback from the synthesizer.

I don't understand it, it should work. Maybe someone with an LAPC-I could have a go.