can I hear the speaker in time simulation

[dadib]

Good day all.

I'm out of ideeas and I need some help. I have to do some project in Multisim and it must "send out of the PC" some signal (not specify what kind of port). I have read the forum that the paralel and serial port can't be used in multisim real time simulation. I'm thinking to use the AUDIO port. Is there any possibility to hear some "noise" in time simulation, using the speaker instrument from LabView ?

The sample program with the microphone and speaker need to be simulated and then I can hear the recorded sound. It is possible to hear in time simulation?

If this is not possible, is there any possibility to "send out a signal" (of any kind - electrical, audio, video) from a multisim simulation? My teacher is very very grrr (you know) - have sayd that it is posible.

Thx very much for you help.

[dadib]

Hello again,

Can I exchange data in multisim time simulation with LabView (I have read that LabView can "send out" signals through the paralel or serial port) ? I have read some topic about how to save multisim simulation informatios and then import into LabView. This can be done automaticaly ?

Thx,                                                                                                                                                                                                                  Daniel

[I.Foldvari]

Basically, you can use any port or I/O that LabVIEW offers from inside Multisim, even when a simulation is running.

The problem however is the different time base of the "real world" and the SPICE Simulator". Take a  signal with a frequency of 1kHz for example. The SPICE engine might need more or less than 1ms to calculate/simulate one period of the signal, depending on the complexity of your circuit or CPU power of your PC. The speaker instruments that ships with Multisim, greys out as soon as the simulation starts,to avoid mismatch in time.

So if you take the different time bases into account you can send data from Multisim via a LabVIEW based instrument to the serial or parallel port.

The following link shows how to create a LabVIEW based instruments:

http://zone.ni.com/devzone/cda/tut/p/id/5635

[dadib]

Merci beaucoup sir Knoblich

I think my problem is solved (now to read and make the LabView component)

[Cjuried]

Hello,

I am using MultiSim 14 and also have Labview on my machine. When using the speaker instrument, I am able to record and playback my simulation. However, the issue I am running into has to do with playback time. Not matter how many seconds I set the instrument to record, it only plays back a short blip of the recorded signal. Any thoughts? Thank you.

Best,

Chris