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What is Classic Audio?

Audio classico (Audio Bluetooth classico) is the most familiar Bluetooth audio module tecnologia. It is a legacy audio protocol defined by the Bluetooth Special Interest Group (Dire) prior to version 5.3, encompassing well-known codecs such as SBC, AAC, and aptX. Based on traditional Bluetooth protocols (PER ESEMPIO., A2dp, Hfp, Avrcp), it focuses on stable audio transmission. Its core advantage lies in ultimate compatibility, billions of Bluetooth devices worldwide, including speakers, cuffie, and in-car audio systems, almost all support Classic Audio connectivity.

 

Whether it is older Bluetooth headphones or home audio systems, Classic Audio enables plug-and-play functionality without compatibility concerns. Its transmission stability has been validated by years of market use, capable of meeting basic audio needs such as daily music playback and calls. It is a core technology ensuring product universality and an indispensable compatibility guarantee in scenarios like retail and consumer electronics.

 

Cos'è le audio?

L'audio (Low Energy Audio) is a next-generation audio standard launched by the Bluetooth SIG. Based on the Bluetooth Low Energy (Ble) protocollo, it inherits connection stability while achieving three core breakthroughs:

  • Ultra-Low Power Consumption: Compared to Classic Audio, LE Audio features significantly lower power consumption, doubling the battery life of devices like headphones and sensors.
  • High-Definition Audio Quality: It supports the LC3 codec, delivering clearer sound quality than traditional SBC at the same bandwidth, balancing transmission efficiency and listening experience.
  • Innovative Features: It enables new scenarios such as audio broadcasting, simultaneous multi-device connection, and spatial audio, breaking the functional limitations of traditional Bluetooth audio.

 

The advent of LE Audio not only addresses the power consumption pain point of traditional Bluetooth audio but also unlocks more intelligent audio scenarios, making it a new technical favorite in fields like smart retail, casa intelligente, and wearable devices.

 

Nel frattempo, LE Audio’s innovative features drive wireless audio to evolve from “single connection” to “diversified interaction”. Typical applications include:

  • Audio Broadcasting: In scenarios like shopping malls and airports, LE Audio can broadcast promotional information and navigation guidance. Customers wearing LE Audio-supported headphones can receive real-time updates without disturbing others.
  • Lossless Audio Transmission: Paired with high-definition codecs, it enables low-power transmission of lossless music and high-definition voice, suitable for high-end headphones and professional audio equipment.
  • Low-Latency Interaction: In gaming and fitness scenarios, LE Audio’s low-latency feature ensures synchronization between audio and video/action, enhancing the immersive experience.
  • Multi-Device Collaboration: It supports one audio transmitter connecting to multiple LE Audio receivers simultaneously, ideal for multi-person audio sharing scenarios such as family gatherings and office meetings.

 

Dual-Mode Audio Transmitter Solution

To address the industry pain point of the trade-off between compatibility and innovative experiences, Feasycom has developed a Audio classico + LE Audio dual-mode transmitter solution based on the Qualcomm QCC3086 chip. As a professional module dedicated to audio source transmission, it retains the wide compatibility of Classic Audio while integrating the low-power and high-definition advantages of LE Audio.

 

FSC-BT1114QI is a Bluetooth audio source SoC module. Its core mission is to wirelessly transmit high-quality audio from audio source devices (PER ESEMPIO., TVs, game consoles, music players) to slave devices such as Bluetooth headphones and speakers.

 

Hardware Features

  • Powered by a Flagship Chip: Equipped with the Qualcomm QCC3086 Bluetooth 5.4 Soc, it delivers a transmit power of 10dBm, ensuring long transmission distance and stable signal.
  • Powerful Audio Processing Capability: Integrated with a 240MHz high-performance audio DSP and supporting a 24-bit high-resolution stereo audio interface, it lays a solid hardware foundation for lossless audio transmission.
  • Dimensione compatta: Measuring only 12mm×17mm×2.2mm, it is suitable for space-constrained devices such as USB Dongles and portable transmitters, enabling easy integration into various terminals.
  • Rich Interface Expansion: Equipped with UART, I2S/PCM, Spdif, USB 2.0, and MIC/Line in inputs, it can flexibly connect to various host devices.
  • Control and Data Interfaces: Uart (for AT command control), USB 2.0, I2C/SPI, ecc., facilitating communication and integration with main control devices.
  • Affidabilità di livello industriale: With an operating temperature range of -40℃ to +85℃, support for a wide voltage supply of 3.0V to 4.6V, and RoHS compliance, it is suitable for harsh environments such as outdoor and industrial settings.

 

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Functional Features

  • Dual-Mode Audio Transmission: Simultaneously supports Classic Audio and LE Audio, compatible with both old and new Bluetooth devices, eliminating adaptation issues caused by user device upgrades.
  • Supported Functional Protocols: A2dp, Avrcp, HFP/HSP, PBAP, Spp, GATT/ATT, Bis, Cis, ecc.
  • Multi-Audio Codec Support: Supports SBC, L'audio, and the Qualcomm aptX series (including aptX, aptX-HD, aptX-AD, aptX-LossLess), covering diverse scenario needs from low-latency gaming audio to lossless music transmission.
  • User-Friendly Firmware Operation: Preloaded with Feasycom’s custom firmware, Bluetooth functions can be invoked via simple ASCII commands, eliminating the need for complex low-level programming, as convenient as operating a “Bluetooth modem”.

 

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Multi-Scenario Application Adaptability

FSC-BT1114QI’s high compatibility and strong adaptability make it suitable for applications across multiple fields:

  • Elettronica di consumo: USB Audio Dongles (upgrading computers/TVs to support wireless transmission), portable Bluetooth transmitters, high-end wireless speakers.
  • Vendita al dettaglio intelligente: Targeted audio broadcasting in malls, shopping guide voice push, smart shelf audio interaction.
  • Casa intelligente: Home theater systems, multi-room audio synchronization, smart speaker audio transmission.
  • Professional Equipment: Gaming peripherals, low-latency audio for fitness equipment, wireless transmission for professional recording equipment.