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We tailor-made wireless protocol for HiFi audio

WiFi and Bluetooth are off-the-shelf wireless technology. They are working on 2.4/5GHz ISM band which is open for all radio devices. Due to more and more devices use WiFi band, they have serious interference. It is not an appropriate technology for audio streaming.

With our 20+ year wireless experience, we reform DECT protocol for HiFi audio application, adding audio mandatory elements, completely resolve wireless audio problem. We have put key HiFi audio criteria into DECT audio protocol :

High accurate timing information, resynchronized every 0.01S
Low master clock jitter by linear PID control
Reduce switching noise by minimize radio transceiver on/off and slow rising ramp
Static data rate, use packet loss concealment to recover error data instead of error data resend
Lower internal EMI noise, reduce radio transmit power to a quarter
Regulated processor task flow, running at low speed, share loading by 3 processors architecture : DECT processor for wireless link, 2xDSP for signal processing, CPU for operation

Second generation DECT audio

The first generation DECT audio launched at 2016. After 5 years work in 2021, DECT audio technology elavate to second generation.

Higher connection reliability, no audio interruption
Advance channel scan, allow to find idea channel
Better sound quality, overall enhance protocol parameters
Improved radio, lower power and longer range
Shorter latency, minimize data buffering

The best wireless protocol for audio product

High accuracy timing characteristic

DECT brings perfect soundstage because of its highly accurate timing characteristic. Unlike Bluetooth, Wi-Fi or WiSA, DECT has a time resolution down to 0.1uS. ONEaudio can keep speaker synchronization as low as 0.5uS steadily even in worst condition, which is hundred time better than Wi-Fi and Bluetooth.

Dedicated channel, no bandwidth sharing, the most stable data rate

Unlike from Bluetooth and Wi-Fi, DECT has dedicated channels with no sharing of data bandwidth. This ensures sound stability and quality. DECT does not suffer from cloudy channel signals and data sharing congestion which often happen in Wi-Fi and Bluetooth devices.

Multi-channel support up to 12 channel, create true 5.1.4 surround

DECT dedicated simultaneous multi-channel broadcasting protocol, each speaker can have its own dedicated channel to replicate a wired system. Delivering to each speaker the sound intended reducing lag and improving sound quality!

- This enables us to reproduce the sound from source the way it was meant to be heard
- Movies and videos played in 5.1 is reproduce in true 5.1, Dolby or DTS cinematic effect!
- Music played in stereo is be reproduced in HD stereo or true 3D sound stage!

Ultra-low latency transmission

DECT protocol is design for instant voice communication. Short time delay between transmitter and receiver bring no visible lip sync in movie play. ONEaudio surround set can achieve same level as of wired AV system.

Dream go true, HiFi speaker can be portable

WiFi and WiSA never are battery operation, only DECT wireless speaker can be powered by battery. A full charge of ONEmini speaker has 100 hours play time !

By DECT technology, we have the World’s only TRUE wireless surround, without speaker cable and power cord. The true wireless 5.1 technology bring us award winning 2016 : CES Innovation Award and DECT Innovation Award.

Low radiation, Low emission, Long range

DECT is low radiation device, only 1/10 of WiFi and 1/20 of WiSA, put your body in safe place.
DECT is not high data rate protocol, it can guarantee a constant data rate for lossless audio streaming. Even DECT is working at 1/10 power of WiFi, it can have longer range and better penetration.

Know more about each wireless technology, how they transmit multi-channels :

Secondary re-transmission degraded the sound quality

Bluetooth is merged L+R transmission

Bluetooth stereo speakers run on master and slave configuration.

Master speaker is primary channel receive compressed L+R audio. Master speaker decompress L+R audio, retrieve R audio, compress R audio and re-transmit to slave speaker.

Slave speaker R audio has serious distortion and time error. You can only listen L channel and R channel sound on master speaker and slave speaker, but you never experience sound stage and sound imaging.

Wi-Fi is point-to-point, poor channel synchronization

Wi-Fi is a shared point-to-point transmission. Audio data is sent one by one (left channel, next right channel, next rear left channel, …. ) which results in theoretical ~20uS channel synchronization error for a 2 channel stereo speaker. Synchronization error will get worse at cloudy environment or more audio channel in surround set.

Stereo sound stage is totally lost. Movie play is lacked of surrounding. Even more worse is some channels will be cut off randomly.

WISA has high data badwidth, fast swtiching lead to ‘digital’ sound

WiSA is working at 5.2-5.8GHz band, frequency band is overlapped with WiFi 802.11ac. WiFi 5GHz is getting busy, crowded channel jam will happen again in the future.

WiSA is high speed data rate protocol, fast hopping, fast response. Unfortunately, fast digital device always generate serious noise. Sound is ‘digital’ and too shape.

WiSA is point-to-point transmission. Audio data send to speakers (total 6 in 5.1 surround) one by one. Fast polling can reduce cahnnel synchronization, but can’t remove channel timing error in busy situation.

WiSA is high current device designed for high end AV product. It need to have main power supply. Speaker wire is eliminated, but power cord is still there.

WiSA is high radio power device, not good for our body.

Semi-wireless, imbalanced L and R speaker sound

Some manufacturers use either a speaker cable or bridging cable to bridge up the right and left speaker. This results in cable distortion in the bridge up cable and causes an imbalance in audio.

Reproduce a true soundstage, L and R channels must exactly identical.

cable distortion create unbalance on 2 channels

Soundbar is TV speaker alternative, poor in sound quality

Soundbar is a single piece device, left and right speaker are put in single cabinet. Reasons of poor sound quality :

L and R sound mix up at internal cabinet, very poor channel separation
Enclosure vibration induce L and R channel crosstalk
Multi-speaker create speaker phase distortion, sound go blur and dull
Narrow L, R and center speaker distance, poor stereo effect

TRUE wireless, TRUE 5.1 Surround, TRUE HD Sound

ONEaudio World’s DECT speakers are truly wireless and produce true HD and Surround sound.

True stereo speakers give and accurate sound stage and clear sound imaging which is the key to musicality. In fact, it’s been quite challenging work to achieve true stereo in wireless speakers.

In order to reproduce true stereo, the below three critical criteria must be fulfilled:

Left and right channel must be synchronized

Two channels must play exactly the same time. We have achieved left and right channel time error is less than 1uS (0.000001 of a second).

Left and right channel must be identical

Two channels must have exactly the same configuration and same signal path; otherwise the sound space will be unbalanced.

Left and right channel must be separated, no acoustic and electrical crosstalk

Two channels must be isolated. Mixing up two channels will lead to poor sound imaging and narrow soundstage.

In a wireless environment the secret of natural Hi-Fi sound is: timing, phase, distortion, noise, up-sampling.

ONEaudio solves the wireless root cause problems of:

Ultra-low latency transmission

On the same level as of AV amplifier

Signal Interference

Dedicated 1.9GHz DECT channel, without data bandwidth sharing

True 5.1 Surround Sound

Multi-channel support, means we can send multiple channels at the same time to all the speakers without lag to produce truly wireless 5.1 surround sound

True Wireless

No speaker cables equal no cable distortion and cable loss AND gives you the freedom to place the speakers where you want

No DAC or Amp required

Full digital circuit, no analogue component, no noise picks up inside an active speaker

Ultra-long play time

Ultra-low current DECT protocol and highly efficient amplifier design

Lossless transmission

Bespoke packet loss concealment technique to handle error data packet

Long range, low emissiion

Medium data rate protocol leading long communication range at low radio power

Simplicity

All-in-one software loaded into a single chip, give the simplest hardware and shorter signal path, result to have silent background and high purity sound

DECT - King of HiFi wireless