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Bluetooth
®
Headphones
A proposal – the music life ahead is “wireless”
Bluetooth
®
wireless technology is a communication technology which enables wireless exchange of data from mobile
equipment such as portable audio, mobile phones and notebook computers.
Enjoy music streaming from portable audio devices, notebooks and mobile phones freely. Leave the wires behind, it’s time
to go unplugged with Bluetooth
®
.
Transmit the music and audio from laptops equipped with Bluetooth
®
functions to wireless headsets or wireless audio
receivers, and you can enjoy hands-free calls and
*1
replay music.
*2
It is also possible to play and pause music using
wireless headsets and wireless audio receivers.
*3
*1
Mobile phones equipped with Bluetooth
®
functions need to be compatible with HFP or HSP.
*2
Mobile phones equipped with Bluetooth
®
functions need to be compatible with A2DP.
*3
Mobile phones equipped with Bluetooth
®
functions need to be compatible with AVRCP.
Connection diagram
Operation
using
remote
controllers
Music
Streaming
Phone
calls
Wireless
headsets
Wireless audio
receiver + headphones
(sold separately)
Mobile phone with
Bluetooth
®
functions
“Walkman
®
” or Portable Audio
with Bluetooth
®
functions
Notebook equipped
with Bluetooth
®
functions
Making calls
Multifunction button
Operates various functions
(receiving/ending calls, etc)
when making calls.
VOLUME + Button
VOLUME - Button
Microphone
Listening to music
Jog switch
Operates various functions
(playing/pausing music, etc)
when listening to music.
POWER button
Group cueing
VOLUME + Button
VOLUME - Button
- Button
+ Button
Equipped with “24-bit D/A converter” which enables high quality playing that is more loyal to the original sound.
Compared to 16-bit, 24-bit enables signal processing that is
256 times more accurate.
Size of music signals
• D/A converter 16-bit vs 24-bit comparison image
Time
24-bit resolution image
16-bit* resolution image
*Bluetooth
®
compatible
accessories other than
DR-BT50
DR-BT50
High quality overband Bluetooth
®
stereo headphones
• Enjoy stereo music playback via A2DP
• Closed-type Bluetooth
®
stereo headphones with pressure-dispersion
ear pads for better wearing comfort
• Large 40mm driver units with 360kJ/m
3
high-power neodymium
magnet for superior sound quality
• 17 hours of communication time/music playback
• Built-in remote function
• Foldable for greater portability
• Transmission by Bluetooth
®
and D/A conversion
While music data via Bluetooth
®
are transmitted digitally, it is necessary
to convert digital signals to analogue signals in order for us to enjoy music
that is played through headsets. This conversion of signals is
“D/A conversion”.
Transmission side
Machinery equipped
with Bluetooth®
(Mobile phone, etc).
Receiving side
Machinery equipped
with Bluetooth
®
D (Digital)
D (Digital) A (Analog)
About compatibility profile of Bluetooth
®
function Profile is a functional standard for each characteristic of Bluetooth
®
product
A2DP (Advanced Audio Distribution Profile) Transmit and receive high sound quality music contents
AVRCP (Audio Video Remote Control Profile) Operates AV equipment such as play, pause, stop and volume control
HFP (Hands-free Profile) Hands-free calls, operates mobile phones
HSP (Headset Profile) Makes calls/operates mobile phones
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Personal Audio Collection I Oct 2010 - Mar 2011
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