Preliminary
miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice 20
4.3 BLUETOOTH
The miniDSP Flex includes the LDAC™ and aptX™ HD Bluetooth codecs
for the high-fidelity Bluetooth™ audio.
LDAC is an audio coding technology developed by Sony that enables the transmission of High-Resolution (Hi-Res)
Audio content, even over a Bluetooth connection. Unlike other Bluetooth compatible coding technologies such
as SBC, it operates without any down-conversion of the Hi-Res Audio content
than those other technologies to be transmitted over a Bluetooth wireless network with
unprecedented sound quality, by means of efficient coding and optimized packetization.
LDAC is supported on recent Android devices. If your device does not support LDAC, you can still pair it with the
Flex, but Bluetooth audio will use a lower bitrate codec.
aptX™ HD is designed to deliver high definition (HD) audio over Bluetooth, to help you get the very most from
your music.
Pairing your mobile device with the miniDSP Flex is essentially the same as pairing it with other Bluetooth audio
devices such as headphones or your car.
To put the Flex into pairing mode:
1. Press the encoder button on the Flex twice and rotate it until the display shows “Bluetooth.”
2. Press and hold the encoder and the display will change to “BTPairing.” The Flex is now in pairing mode.
3. Open the Bluetooth Settings on your mobile device to pair with the Flex. The exact appearance will vary
depending on your specific device, but this series of screenshots illustrates a typical sequence:
A codec (short for “coder/decoder”) is the algorithm that is used to compress the audio stream for transmission over
Bluetooth and then to decode it in the receiver.
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