Bluetooth LE Audio vs. Bluetooth Low Energy
Comparing 2 standards across 14 specifications. 14 key differences identified.
Bluetooth 5.4 and LE Audio represent a complete architectural overhaul of Bluetooth audio and retail IoT. Powered by the Low Complexity Communication Codec (LC3), Isochronous Channels, Auracast broadcast audio, and Periodic Advertising with Responses (PAwR), it delivers superior audio quality at half the bitrate and supports multi-thousand device Electronic Shelf Label (ESL) networks.
Bluetooth Low Energy (BLE / Bluetooth Smart) was introduced in Bluetooth Core Specification v4.0 (2010) and enhanced through v4.2 (2014). Operating across 40 channels in the 2.4 GHz band, it replaced continuous connection streams with an event-driven Generic Attribute Profile (GATT) architecture, enabling devices to operate for years on a single coin cell battery.
Specification Comparison Table
14 Parameters| Parameter / Spec | ||
|---|---|---|
|
Bluetooth Version
|
v5.4 (2023) / LE Audio Architecture | — |
|
Standard Audio Codec
|
LC3 (Low Complexity Communication Codec) | — |
|
Audio Bitrates Supported
|
160 kbps (High quality) down to 32 kbps (Speech) | — |
|
Broadcast Audio Standard
|
Auracast (Unlimited simultaneous listener sinks) | — |
|
Multi-Stream Audio
|
True independent left/right earbud streams | — |
|
PAwR Capability
|
Periodic Advertising with Responses (Sub-event bidirectional polling) | — |
|
Encrypted Advertising Data
|
EAD (Standardized payload encryption) | — |
|
Bluetooth Versions
|
— | v4.0 (2010), v4.1 (2013), v4.2 (2014) |
|
Frequency Bands
|
— | 2.402 GHz to 2.480 GHz (40 RF channels @ 2 MHz spacing) |
|
Channel Allocation
|
— | 3 Advertising channels (37, 38, 39) + 37 Data channels |
|
Raw PHY Rate
|
— | 1 Mbps (1M PHY) |
|
Application Layer Architecture
|
— | GATT (Generic Attribute Profile) / ATT (Attribute Protocol) |
|
Max Packet Payload (v4.2 DLE)
|
— | 251 bytes (increased from 27 bytes) |
|
Typical Battery Life
|
— | 1 to 5 years (on CR2032 coin cell) |