Bluetooth LE Audio vs. Bluetooth Classic
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 Classic encompasses Bluetooth Core Specifications v1.0 through v3.0 + HS. Operating in the 2.4 GHz ISM band across 79 channels with Frequency-Hopping Spread Spectrum (FHSS), it established wireless audio (A2DP), hands-free telephony (HFP), and serial peripheral connectivity (SPP/HID) at data rates up to 3 Mbps.
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 Generations
|
— | v1.0, v1.1, v1.2, v2.0 + EDR, v2.1 + EDR, v3.0 + HS |
|
Frequency Bands
|
— | 2.402 GHz to 2.480 GHz (79 RF channels @ 1 MHz spacing) |
|
Modulation Schemes
|
— | GFSK (Basic Rate 1 Mbps), π/4-DQPSK (EDR 2 Mbps), 8DPSK (EDR 3 Mbps) |
|
Max BR/EDR PHY Rate
|
— | 3 Mbps |
|
Frequency Hopping Rate
|
— | 1,600 hops/sec (AFH–Adaptive Frequency Hopping) |
|
Key Audio Profiles
|
— | A2DP (Advanced Audio Distribution Profile), HFP, HSP, AVRCP |
|
Supported Audio Codecs
|
— | SBC (Mandatory), AAC, aptX, aptX HD, LDAC |