Bluetooth Audio Solutions

Telink Proprietary and Confidential 1

Bluetooth Audio SolutionsHigh Performance, Ultra Low Power Connectivity Solutions


BackgroundBluetooth Audio Grows Rapidly


Bluetooth Audio MarketAudio is one of the four major application areas for Bluetooth technology: Audio streaming, data transfer, mesh networks, location services

Bluetooth audio application shipments constitute 1/3 of total Bluetooth volume.

Three major application areas for Bluetooth Audio

Wireless headsets options (over ear to buds) becoming most desired accessory for mobile platforms

Wireless speakers: from portable speakers to high fidelity entertainment systems

Car entertainment: Infotainment systems in-car paired with smart phones to enable hands-free audio and voice

New application area such as Audio Sharing using Bluetooth 5.2 has not been estimated yet


Market Research – True Wireless Earbuds

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2016 2017 2018 2019 2020 2021 2022 2023

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The Global Market For True Wireless Earbuds: Millions Units Shipped, from 2016 to 2023

Millions Units Shipped

Source:SAR INSIGHT2019-TrueWirelessEarbuds

Source:Strategy AnalyticsGlobal Bluetooth Headset Sales and Revenue Forecast 2001 to 2024

2019 TWS Volumes

Apple

Xiaomi

Samsung

JBL

Huawei

Beats

Jlab

Sony

Amazon

Skullcandy

Jaybird

Realme

Others


Today: Bluetooth Classic SolutionsBluetooth Classic transport (BR/EDR) for audio/voice

Mature, interoperable, non-TWS solutions: stereo headset, hands-free, speaker, …

True wireless scenarios

No standard solutions, different IC providers/solution providers have their own proprietary solutions

Fast growing but also fast fragmenting, non-consistent user experience from vendor to vendor

Tomorrow: BLE Audio SolutionsComplete new standard from ground up

Take advantage of the LE transport

High efficiency, low latency PHY/LL design

Brand new codec for high audio/voice quality

Support new usage scenarios inherently (Broadcast, true wireless, 1-to-N, M-to-1, …)

Bluetooth Audio Evolution


Telink Bluetooth Audio SoC RoadmapFull Portfolio Coverage: Bluetooth Classic Audio, BLE 5.2 Audio


Telink’s Unique Position in Bluetooth Audio

Technical Expertise in Both Bluetooth and Audio

Complete Audio Solution

Strong Supporter for Bluetooth Technology

Telink proprietary BLE Mesh technology enters MP two years before SIG Mesh standards

Hold over 80 Patents on related technology worldwide and multiple patents are filed on Bluetooth True Wireless Audio

Reference hardware with IDs

Bluetooth Stack and turn-key firmware

Dual-mode solution with both Bluetooth Classic based TWS and Bluetooth LE based TWS support on single chip

An associate Member of Bluetooth SIG and hold board position on Bluetooth SIG board

The first SoC companies to provide support up to the latest version of Bluetooth Spec


Audio Solution - Headsets/EarbudsFeatures

Bluetooth Classic and upgradable to LE audio

HSP/HFP/A2DP/AVRCP

SBC/MSBC, AAC, LC3, OPUS, …

EQ sound regulation

Sniff mode

OTA

Low latency

Primary and secondary earbud Synchronization

Smooth role switching between primary and secondary earbud

Compatibility

AEC/Noise Suppression

Dual-Mic Noise Suppression algorithm supported by 3rd party partner

ApplicationStereo headsets/sport earpieces

True-wireless earbuds (see Dedicated sub-section for more details)

Part NumberTLSR9515A


ApplicationSmart Watch / Wristband / Bracelet

Part Number

TLSR9515H

Features

Bluetooth Classic and Bluetooth LE dual-mode

Up to 320*360 LCD

Touch Panel (TP)

G-Sensor

Heart Rate Sensor

IOS ANCS

Wechat Lite Protocol

HID Service

Charging Detect

Audio Solution - Wearable

Main Chip

TLSR9515H

USB Port

Li Battery

Crystal 24MHz/32k

5V/DP/DM

3.7V

XC1/XC2

D0/D1

LED

DMIC

AMICx2

Speaker

PWM

B2/B3

Channelx2

L/R Stereo

Charger

UARTx1

NandFlash

Display Module

LSPIx1 HSPIx1

I/F

I2Cx1

G-sensor/Heart Rate/Touch Panel

DEBUG, A7

SWS

Music PA

I2Sx1,C3/C4/C5/C6/C7

ANT

Antenna


Features

Universal BT/BLE controller

Standard HCI interface

Support to connect with either Telink solution based devices or 3rd party Bluetooth Classic / Bluetooth LE compliant devices

Application

OTT box, STB, TV

Part Number

TLSR9513A

Audio Solution – HCI Controller

TLSR9213

TLSR825x

TLSR827x

TLSR9515A


Audio Solution – HID + Audio setsFeatures

With the dongle plugged into PC, HID and audio devices can work simultaneously and smoothly.

Excellent scheduling mechanism to ensure audio quality while maintaining high HID report rates

ApplicationUSB Dongles and PC accessories

Part NumberTLSR9513B

BT PKT BLE PKT BT PKT BLE PKT BT PKT BLE PKT

TLSR9213

TLSR9515A

TLSR827x


Audio Solution – Low Latency Wireless Gaming HeadsetFeatures

Telink customized ultra-low latency solution

~ 20ms latency end-to-end: The latency data include processing time of both RF and codec.

Application

Wireless Gaming headset

Part Number

TLSR9513B


TWS Comprehensive SolutionsFrom IC to Stack to Turn-key References


Telink TWS Solution OverviewSingle chip is capable of supporting multiple TWS protocols

BT Classic based True Wireless

Bluetooth LE based True Wireless

Reduces risk to customersSeamless switch between protocols on the same hardware

BT Classic based True WirelessUnder patent protection

No changes required on client side

Bluetooth LE based True WirelessIntroducing the new audio codec: LC3

Featuring ultra low latency

Audio sharing support for scenarios of 1-to-N communication between one audio source and multiple audio sink devices


Telink True Wireless Basic BT Solution – Complete Reference“Sniffing” with proactive retransmission request and periodic control/sync between ears

TWS mode for both music streaming and voice calls

Total solution supports earbuds and charging case references

Hardware + Firmware for fast production rollout

Automatic primary/secondary selection with charging case interactions (e.g. battery level report)

Automatic primary/secondary switching when one piece is taken out of ear

Single physical Bluetooth connection to mobile regardless of selection or switching

Basic acoustic echo cancellation supported

Embedded keyword wakeup

Primary Channel Secondary Channel

Control Channel


Telink High Efficiency TWS – Enhanced BT Solution

Uses spare air-time in Bluetooth normal transmission Slot for earbuds communicationsNo changes required on mobile side

Highest efficiency for either power saving or robustness tradeoffs

Optimized hardware to Bluetooth Radio, Modem and basebandAvailable only in TLSR95 series and onwards

Built upon Telink’s strong expertise for RF/Modem/Baseband, cannot be achieved by competitors easily as most of them purchased RF/Modem/Baseband IP in their SoC

Patent pending


Telink TWS Measurements – Streaming Latency

Central Platform

Phone

USB

TLSR9518A EVK(QFN80)

Audio L Audio R MIC L MIC R

Audio Jack Audio Jack

Wireless BT Connection

TELINKTLSR9515A

Rapoo-XS200Realtek-8763B

MI-AIR2SBES 2300Z

Pla

ybac

k La

ten

cy/m

s

HUAWEI-MATE30P-SBC HUAWEI-MATE30P-AAC


Telink TWS Features – Advanced Audio FeaturesLocal Keyword Spotting (KWS) and command recognition

One Keyword + 8 ~ 20 command words: standard reference provided, customized keyword and command word can be trained with NRE cost

No extra hardware needed

Works with single mic, extensible to 2 mics with noise reduction

Acoustic Echo Cancellation

Noise Suppression (1-mic Environment Noise Reduction)


Telink Bluetooth LE 5.2 TWS – Ultra low latency


Thank You!

Documents

Bluetooth Audio Solutions