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2.4.1 Audio
Audio supports WAV playback, voice recording, and other functions. Stereo data is converted to
monaural for output. Voice Recorder is an installed sound-related application.
- Play
KHz 8 11.02
5
12 16 22.05 24 32 44.1 48
Monaural O O O O O O O O O
Stereo O O O O O O O O O
Sampling
frequencies
Sampling frequencies other than those above are not supported
Stereo/ monaural 8bit or 16bit
In reality, the integrated monaural speaker does not output sound in stereo.
- Record
KHz 8 11.02
5
12 16 22.05 24 32 44.1 48
Monaural O O O O O O O O O
Sampling
frequencies
Sampling frequencies other than those above are not supported
Stereo/ monaural 8bit or 16bit
* Only monaural input via the microphone.
- Volume setting
The Control Panel Volume & Sounds can be used to set up sound volume in six levels from loud to
low, and mute ON/OFF. Refer to “3.3.1 Sound/ notification settings” for the Tools screen.
Setting can also be made from the application by using a system library.
For details, refer to the System Library Manual.
- Functions
No. Item Description
1 Shutter sound
output
The shutter sound WAV is output from the speaker when a photo is
taken with the camera, to prevent voyeurism. The shutter sound cannot
be disabled. It is output at fixed volume, regardless of the volume setting.
The shutter sound is still output from the speaker when the earphone
jack is connected. Even if another sound is being played when the photo
is taken, that sound is suppressed to forcibly play the shutter sound.
2 Incoming calls
button control
The mobile headset that connects to the earphone jack has a button.
When the button is pressed, it issues an incoming call response event to
VoIP.
3 Audio output
destination switch
This function switches the audio output destination over to Bluetooth if a
Bluetooth headset is used. The default is to output from the speaker.
4 Audio ON/OFF The audio system can be disabled for power-saving control. This can be
set from a user application by API.
5
Virtual Off When the system has entered virtual off state, audio output requests are
ignored. Even the sound of ringing is muted. On restoration from the
virtual off state, audio output requests are accepted.
6 Audio operation
restriction due to
battery power
Audio operation is enabled during Lithium Ion battery operation.