Capturing microphone data

Question

How to capture current microphone data, just like using the function CurrentImage[] for capturing image?

For example, this captures an image:

Dynamic [x = CurrentImage []; EdgeDetect [x, 3]]

But I don't want to use the function

SystemDialogInput ["RecordSound"]

since it requires user interaction, and I want recording to start programmatically.

EDIT: In his answer to this question (I saw it after I posted my question), @Szabolcs says that following works, but it is undocumented:

FrontEndExecute[FrontEnd`RecordSound[5]] will list the available devices by number

FrontEndExecute[FrontEnd`RecordSound[6, deviceNumber]] will list the available formats for the device

FrontEndExecute[FrontEnd`RecordSound[1, deviceNumber, formatNumber]] will start recording. It returns control immediately.

FrontEndExecute[FrontEnd`RecordSound[2]] will stop recording and return the duration.

FrontEndExecute[FrontEnd`RecordSound[3]] will return the recorded sound (it's the "OK" button in the dialog)

FrontEndExecute[FrontEnd`RecordSound[4]] will probably discard the recorded sound (it's the Cancel button)

FrontEndExecute[FrontEnd`RecordSound[9, 0]] will return the current volume of the recorded sound, and is used for the progress indicator in the dialog.

Is this changed or documented in latest Mathematica?

This is current documentation on FrontEndExecute.

No, it's still undocumented. You could try using some external command line tool (sox?) to record the sound, then import the result to Mathematica. — Szabolcs, Nov 09 '14 at 21:51
I guess the devices functionality in V10 should allow you to do this, but you'd have to provide links to device drivers. — Sjoerd C. de Vries, Nov 09 '14 at 22:36
Voting to mark as duplicate unless there's a reason the linked Q&A isn't sufficient. — bobthechemist, May 12 '15 at 12:46

Capturing microphone data

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