Edit waveform channels independently

How do you edit channels independently in the waveform editor? I have an audio clip where the left channel is slightly out-of-sync with the right. I need to trim the right channel without affecting the left in order to re-sync them (or slip it down the timeline), but I can't seem to figure out how to do this...
Does anyone know how to unlock tracks from each other?

Couldn't readily see a way to do this.
However I offer you this workaround.
1. Take the stereo clip in your multitrack project and copy it to another track in sync with the first one
2. Make each clip into an Independent Audio File Project. (Clip menu or contextual menu)
3. Select one of these new clips in the timeline, using the contextual menu select the first item *Channel Select >Mono>L*
4. Repeat for the second clip choosing *Channel Select>Mono>R*
You should now have 2 mono clips in your multitrack project. One L and one R and you can slip slide and trim them as necessary.
hth, jim

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N Channel independent configuration with DAQmx

For an application, where I need to give the user, the options of configuring 8 analog channels independently, what would be the best way to go ? ( He needs to set the min, max values, samples and acquistion type - SE, Diff etc )
Use 8 sets of "DAQmx CreateChannel( AI_Voltage_Basic)+ DAQmx Start Task + DAQmx Read VIs" or is there a VI which does this configuration as a single sub-VI ? I have searched enough to find one such.
Any ideas that can provide a compact solution would be welcome.
Thanks
Raghunathan
Raghunathan
LV2012 to Automate Hydraulic Test rigs.

Sean C. wrote:
Hello Raghunathan,
...you will have to create a Task with all channels you want to modify, then pass that Task to a Channel Property Node. You can then set the options for each channel independently. ...
See the attached VI for an example of this.
I hope this helps,
Sean C.
Applications Engineer
National Instruments
Dear Sean,
Thanks.
I guess I got your point. Let me repeat the steps - just to make sure:
1. In the example sent by you, create the required properties for all 8 channels using "add element".
2. Give a descriptive name for each channel.
3. Next click on each node and select "Create Control". This will provide the required user control on the panel.
4. Group all properties for each channel ( min, max,type,etc) properly and lay them out neatly.
5. Finally pass the duplicate reference out of this synthesised proprty node to a DAQmx Read VI.
Is that right ?
Now I think I sort of realise the power of DAQmx VIs.
Regards
Raghunathan
Raghunathan
LV2012 to Automate Hydraulic Test rigs.

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I'm using DIADEM 10.0 and observe the following problem:
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R1=<Some constant != 0>
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But in some cases the result channel is returned as numeric channel, in some as waveform-channel.
Both input-channels have the same "waveform x-offset" (e.g. -0.0169000000000023) and nearly the same "waveform x-step width"
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Let me add one comment to Brad's explanation:
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' DIAdem 10.1 or higher
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End If
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Quite often, I have to edit waveforms in the edit window, and I find the waveform too small to usefully edit. When I look at demo's of Garageband, I see waveforms that are, compared to mine, enormous. Am I missing something, either in producing or looking at these tracks? It doesn't seem to make much difference what the output volume of the wave is, or what 'magnification' I use in the edit window.
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ontradio wrote:
When I look at demo's of Garageband, I see waveforms that are, compared to mine, enormous.
grab the bar dividing the edit pane from the tracks and stretch it up

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Attachments:
Digital Channel Names.vi ‏89 KB

How are you entering the names? Here is text straight from the LabVIEW Help
name to assign specifies a name to assign to the virtual
channel this VI creates. If you do not wire a value to this input, NI-DAQmx uses
the physical channel name as the virtual channel name. If you use this input to
provide your own names for the virtual channels, you must use the names when you
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source input of the DAQmx Trigger
VI.
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National Instruments
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tintin_99 wrote:
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Aug 27 19:24:08 PowerStation kernel[0]: (76: coreservicesd)tfp: failed on 0:
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Edit waveform channels independently

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