Thanks. It now works here (Chrome 44).

Though the audio quality is extremely poor. Even if with sample rate raised:

Play[Sin[400 2 Pi t], {t, 0, 1},SampleRate -> 44000]

No, on my local computer.

Thanks.

I had not noticed that you were speaking about the cloud.

The clue is in the group title "Wolfram Programming Cloud" :)

you'll see a little symbol on the upper right that says that this function is not supported in the cloud.

Thanks. I hadn't seen that. Wolfram would need to make that icon only little fainter to ensure no-one saw it :)

But regardless, that statement is wrong. WPC offers Play in autocomplete, executes it, produces the play control, and that play control does work in the cloud, once deployed. The problem is simply the play control does not work in the WPC IDE.

Unless anyone here reports different, I'll assume this is a bug, and will report it.

its help clearly states that it does not work properly in the Cloud.

It's help clearly does not state that. And indeed it works fine in the cloud. Just not in the IDE.

Wolfram know that Play does not work in the Cloud and they state that in the documentation

I've seen only the "not supported" you highlighted.

The result is not really incorrect or unexpected; in fact it is documented. :-)

The result is not documented in the article you referenced. If you have another source, I'd be interested to see it.

Also, I guess that there are security issues if the Cloud was allowed to use your speakers and/or microphone.

Play[] doesn't need a mic, just a Graphics[] doesn't need a camera. And there's no security issue preventing the CloudDeploy Play[] version working, so I can't see there are any excusing the fact that IDE Play[] is not working.

There is a little Cloud symbol on the upper right which is indicating that this does not work in the cloud.

As I said, it does work in the cloud. Just it does not work in the IDE.

So I thought that it is documented that it is not supported in the cloud.

You claimed the result is documented. It is not.

However, both need sound drivers; often the same driver is responsible to address the soundcard which is responsible for the speaker and the mic. There are often issues with that when you use screensharing and other programs

This is not due to driver issues (as proven by the fact CloudDeploy Play works) and I am not using screensharing.

Thanks anyway for the suggestion. Bye for now.

No, on my local computer. I had not noticed that you were speaking about the cloud. I would not expect sound to work on the Cloud. If you look at the documentation for Play:

https://reference.wolfram.com/language/ref/Play.html?q=Play

you'll see a little symbol on the upper right that says that this function is not supported in the cloud.

Cheers,

Marco

Oh, now I see what you are saying. Sorry. Yes, it does work for me. (OS X 10.10.4, MMA 9-10.2). Never had a problem with it. Do other interactive boxes work on your computer, e.g. does Manipulate work as expected? Which version of Mathematica and which operating system are you on? Is there a problem with Mathematica and your sound card? I guess that this is not a problem specific to Play. Can you play any wav-file after importing it?

Cheers,

Marco

Hi,

the Play function produces the interface on which you have to click to play the sound. If you want to play the sound directly you can use:

EmitSound[Play[Sin[440 2 Pi t], {t, 0, 1}]]

Cheers,

Marco