How do I output on multiple channels using Audio Device Writer?

Hi,

I am using Audio Device Writer with the following settings:

UMC device has 12 channels as shown:

I am using from workspace block to access the the samples of the signals to be output, which consists of:

column 1: time

column 2: signal 1

column 3: signal 2

Signal dimentions overlay option indicated that the audio device writer is getting two channels as expected

When I attempt to manually map output channels as shown I get the following error:

Number of channels in the output data and the length of the channel map vector must match.

If I select default mapping I do not get an error but neither do I get an output. If I output just on a single channel, I do get an output. However, I require the output on multiple channels.

Could someone help me understand how to map to the channels I want and output using audio device writer please?

Answer 1

[Jimmy Lapierre]

Channel mapping 1:2 is fine for playing 2 channels. The error appears to be about the number of columns and I do not think the block support a time column, because the sample rate must be constant (44.1kHz for example). Consider using a block like this to remove the time component.