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concatenate audio files in simulink

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How can I concatenate 2 or more audio (.wav) sounds into one?

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Accepted Answer

jibrahim
jibrahim on 3 Apr 2020
Hi Katarina,
Use two 'From Multimedia File' blocks to read the wav files.
There are multiple ways of concatenating two signals in simulink.For example:

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Katarina Vuckovic
Katarina Vuckovic on 4 Apr 2020
Is there a way to detect the end of one audio and use it as a trigger to intiate the next ?
Walter Roberson
Walter Roberson on 4 Apr 2020
Output end-of-file indicator
Use this check box to determine whether the output is the last video frame or audio sample in the multimedia file. When you select this check box, a Boolean output port labeled EOF appears on the block. The output from the EOF port defaults to 1 when the last video frame or audio sample is output from the block. Otherwise, the output from the EOF port defaults to 0.
Katarina Vuckovic
Katarina Vuckovic on 4 Apr 2020
Right now I am able to get it to work by triggering the two audio files to be on/off using a constant pulse. This works only if the messages are constant duration. However if the messagase are of variable duratio, I don't know how to detect that the first message has ended.

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Katarina Vuckovic
Katarina Vuckovic on 4 Apr 2020
Hi Walter, if I play one on the left channel and one on the right, wouldn't they still be playing at the same time instead of one after the other?

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Walter Roberson
Walter Roberson on 4 Apr 2020
Yes. My explanation was for how it happened that they were playing at the same time. The cure is to ensure that you concatenate on the first dimension instead of the second.

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