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Developer
Posts: 101
Registered: ‎12-10-2009
My Device: styile 9670
My Carrier: SingTel

full Duplex audio recording and playback

[ Edited ]

Anyone can help me by giving advice for full duplex auido recording and playback.There exist two approach for audio playback.One using datasource+sourcestream and another one using inputstream.Using which approach i can get the full duplex audio.  Again,which handset exactly support full duplex audio.I am using blackberry bold 9000.

 

 

Mobile Application Advisor
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New Developer
Posts: 14
Registered: ‎08-11-2009
My Device: Not Specified

Re: full Duplex audio recording and playback

Both will work. I am using a circularbytebuffer.

Just remember to modify the read to feed the player the correct header.

 

The 9000, 8900 and 9700 are the devices I've tried it on.

The biggest problem is the buffering delay on the incoming audio when using OS 5.0....

Developer
Posts: 101
Registered: ‎12-10-2009
My Device: styile 9670
My Carrier: SingTel

Re: full Duplex audio recording and playback

have you used two application one in background and another in foreground??

Mobile Application Advisor
Developer
Posts: 101
Registered: ‎12-10-2009
My Device: styile 9670
My Carrier: SingTel

Re: full Duplex audio recording and playback

at last solved::Smiley Happy

Mobile Application Advisor
New Member
Posts: 2
Registered: ‎08-06-2010
My Device: Not Specified

Re: full Duplex audio recording and playback

Not sure if background or foreground matters and not sure if 2 processes or 2 threads matter.

 

CMDA or GSM may show differences. I am curious how come the phone application itself can fulfill full duplex. Maybe it's a little on the J2ME audio manager for CMDA devices. It seems ok on GSM devices.

Developer
Posts: 709
Registered: ‎09-10-2009
My Device: 8520, 8900, 9000, 9300, 9650, 9700, 9780, 9800, 9810, 9900, 9930
My Carrier: Verizon

Re: full Duplex audio recording and playback

The phone application is a native app, not a java app.

Developer
Posts: 101
Registered: ‎12-10-2009
My Device: styile 9670
My Carrier: SingTel

Re: full Duplex audio recording and playback

 

@ava: Have you tried full duplex in storm2 9520 or in strom series phone?.

Mobile Application Advisor
New Contributor
Posts: 3
Registered: ‎11-23-2011
My Device: Blackberry Curve 8520
My Carrier: Airtel

Re: full Duplex audio recording and playback

yes there is a buffering delay on the incoming audio when using os 5.0, have to give a try on os 6.0 and above.

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