Macromedia flash media server 2-client-side actionscript language reference for flash media server 2 User Manual

Microphone class

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The Microphone class lets you capture audio from a microphone attached to the computer 
that is running Flash Player. 

When used with Flash Media Server, this class lets you transmit, play, and optionally record 
the audio being captured. With these capabilities, you can develop media applications such as 
instant messaging with audio, recording presentations so others can replay them at a later 
date, and so on. Flash provides similar video capabilities; for more information, see the 

 entry.

You can also use a Microphone object without a server—for example, to transmit sound from 
your microphone through the speakers on your local system.

To create or reference a Microphone object, use the 

Method summary for the Microphone class

Property summary for the Microphone class

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Flash Player displays a Privacy dialog box that lets the user choose whether to allow or 
deny access to the microphone. Make sure your Stage size is at least 215 x 138 pixels; 
this is the minimum size Flash requires to display the dialog box.

Method

Description

Returns a default or specified Microphone object, 
or 

null

 if the microphone is not available.

Specifies the amount by which the microphone 
should boost the signal.

Specifies the rate at which the microphone should 
capture sound, in kHz.

Specifies the amount of sound required to activate 
the microphone.

Specifies whether to use the echo suppression 
feature of the audio codec.

Property (read-only)

Description

The amount of sound the microphone is detecting.

The amount by which the microphone boosts the signal 
before transmitting it.

The index of the current microphone.