Acoustic Echo Cancellation Technology
Applied acoustic echo cancellation with above 30ms to support speaker phone functionality on this product complying current codec spec(AMR, G.711, G.729.a)

1. Noise Suppressor Technology
   Enhanced SNR over 15dB at the range of over 6dB using single microphone on this product complying current codec spec(AMR, G.711, G.729.a)
2. AVS(Automatic Volume Stabilization)
   During multilateral tele-conversation, support the planarization to make voice talk stable in case of voice level deviation.
3. Convergence of Element Technologies Converged AEC, NS and AVS
4. Bluetooth Communication
   Support global Bluetooth specification of voice communications

Specification of Sound Donut

Technical Details

• Acoustic Echo Cancellation Technology
  Applied acoustic echo cancellation with above 30ms to support speaker phone functionality on this product complying current codec spec(AMR, G.711, G.729.a)
• Noise Suppressor Technology
  Enhanced SNR over 15dB at the range of over 6dB using single microphone on this product complying current codec spec(AMR, G.711, G.729.a)
• AVS(Automatic Volume Stabilization)
  During multilateral tele-conversation, support the planarization to make voice talk stable in case of voice level deviation.
• Convergence of Element Technologies
  Converged AEC, NS and AVS
• Bluetooth Communication
  Support global Bluetooth specification of voice communications

Functionality

Next Generation Wireless Speakerphone

The advanced voice communication device to support teleconference connecting PC, telephone, mobile phone or any other potable devices applying HQV(High Quality Voice) technology for voice communication through stereo speaker and microphone.

HQV Multilateral Tele-Conversation

- Embedded DSP module to cancel the electric-phonic echo and this Speaker Kit is the advanced voice communication device to support teleconference connecting PC, telephone, mobile phone or any other potable devices applying HQV(High Quality Voice) technology for voice communication through stereo speaker and microphone.
- Designed minimized interference layout in between speakers and microphone to realize noise suppressor avoiding the echo and background noises.
- During multilateral tele-conversation, support the planarization to make voice talk stable in case of voice level deviation.

Handsfree

By Bluetooth communication, available handsfree at conference room and driving connecting mobile phone

Multi-Media Play

Support playing multimedia contents at PC or any Bluetooth devices

3D Sound Effectiveness
Using 3D Sound
5 types of 3D sound effects are programmed in the order below.
While in Play/Pause mode, double touch (Play&pause) icon to select the 3D sound effect of your choice.

1. Normal : No 3D sound effect is applied.
* Two beeping sound will indicate that the headset is in Normal mode.

2. eXTX
Delivers much wider and affluent surround sound images based on the acoustic crosstalk cancellation technology for stereo loud-speakers.

3. LIVE Reverberation
Realization of 3-Dimensional presence of powerfully reverberating sound when listening with earphone or speaker by creating the feeling of appreciating music in an actual live concert hall.

4. WIDE Early Reflections
Creation of wide and comfortable stereo image from side to side with panoramically spreading sound images of centrally located musical instruments like main vocal voice by emphasizing spreading effect in space.

5. MEX Magic Expansion(Stereo Expansion & LFE)
Reinforce insufficient reproductive capability of low-pitched and high-pitched sounds, while reinforcing stereo component of sound in order to further widen width of the stereo sound.

Power On/Off

• Power On
  Press the Power button about 5sec until touch LED light on Ring sound.
• Power Off
  Press the Power button about 3 sec and it Power off with Ring sound.

Pairing

1. Sound Donut Pairing Mode
In the Power off mode, press the power button about 8sec.

• It goes to pairing mode after power on.
• In pairing mode, Blue and Red LED blinking with Ring Ring Sound.

2. Pairing with your smart phone

<Example>
* iPhone
(1) Go into Bluetooth mode as below order
Setting → General → Bluetooth
(2) ON the Bluetooth function and search the Devices
(3) Select ¨SOUND DONUT〃

* Android phone
(1) Go into Bluetooth mode as below order
Main Menu → Settings → Wireless and network → Bluetooth settings
(2) touch "Bluetooth" menu to activate
(3) touch Search for devices
(4) Select "SOUND DONUT"

* Some Devices need P/W or PIN Code. In this case, enter "0000"

Making Phone Call

Voice dial: Touch the icon once to activate voice dial.
* Some phones might not support this function.

Last Number Redial: Touch and hold(about 3 sec) icon to redial last number.

Answering a call: When receiving a call, touch icon to answer the call.

Mute : While talking on the phone, touch icon to turn off microphone.

Ending a call: While talking on the phone, touch to end the call.

Rejecting a call: While receiving a call, touch icon to refuse the call.

Volume Control: Use '+' / '-' icon to adjust the volume level.

Call transfer: During a phone conversation, touch and hold icon to switch the call between the headset and the phone.

Listening to Music

Play/Pause
1. Touch icon to launch the phone's MP3 player and to start listening to music.
2. While MP3 player is in use, touch icon to pause or to resume play.

Song Selection
While MP3 player is in use, touch or icon to select songs.

Answering Call While Listening to Music
1. When receiving a call, touch icon to answer the call.
2. Touch icon while on the phone to end the call
3. When receiving a call, touch icon to reject the call.
- Music will resume playing when the call is rejected.

Volume Control
Use '+' / '-' icons to adjust the volume level.

Line in /out
Using earphone
- When you connect an earphone, you can listen the music the music through an earphone
- Sound Donut speaker is not working when earphone is connected
- You can listen the phone call through earphone not speaker. But Sound Donut MIC is working

Using Sound donut as cabled speaker
- Touch and hold (Mute) icon (3 sec) and touch icons blink 2 times and it changes into normal speaker mode. Then it can be used as normal speaker connecting with 3.5mm mini stereo cable.
- Touch and hold (Mute) icon (3sec) again and touch icons blink 1 time and resume the Normal speaker mode.
* Touch icons and 3D Sound Effects do not work in Normal speaker mode.

Multi Pairing

Multi Pairing Method
1. All Bluetooth devices to be used in multi pairing must be first paired individually using appropriate profiles. (HSP or HFP for phone conversation, and A2DP for high quality audio)
*Each profile cannot be used to connect more than one device simultaneously. See 'Notice' below for more details.
*The auto connect function of the headset will connect each profile to the last connected device.

2. Once the host devices are paired, connections can be made by:
a. Turning the headset off and on (Auto connect function will take effect).
b. Or connecting from host devices.

Notice

1. In multi pairing, one profile cannot be used to connect more than one device. For example, it is NOT possible to use the phone's MP3 player and the computer’s MP3 player at the same time, because both devices try to connect through the A2DP profile. On the other hand, it is possible to connect the phone using HSP, while the computer is connected using A2DP. This way, you can listen to the music from the computer and answer phone calls at the same time.
2. In multi pairing mode, the use of some functions maybe restricted depending on host devices and the environment in which it is used.
3. We do not guarantee the compatibility of all combination of devices and functions for multi pairing.

Application of Sound Donut