Skip to main content
  • Products
  • Evaluate our Software
  • Downloads
  • Free Utilities
  • Purchase
  • Support
  • About Us
  • Blog
  • Forum
  • Search
    • Contact Us
    • Forum
    • Wiki
    • Web Shop
    • Newsletter
    • RSS
  •   Jobs
  •   Videos
  •   Blog
  •   Sustainability
  • emUSB-Device
  • Audio
  • Technology
  • Add-Ons
emUSB-Device-Audio-product-icon-SEGGER-blue_01

emUSB-Device Add-Ons - USB Audio

Easily transmit audio via USB. Record or replay audio received from the host, send recorded audio to the host.
Simple and driverless! Plug-and-play on any operating system.

  • USB Audio V1.0 class implementation.
  • Record audio from the host
  • Send audio to the host
  • All common sample rates supported (8, 16, 22.05, 44.1, 48, 96, 192 kHz, etc.)
  • All sample resolutions supported (8, 16, 24, 32 bit per sample)
  • Number of channels freely configurable
  • Multi-platform, no drivers needed on Linux, macOS or Windows
  • High performance
  • Small footprint
  1. 1.Enhance your device with audio capabilities
    1. 1.1.Typical Applications
  2. 2.Application Samples emUSB-Device Audio
  3. 3.Technical details
  4. 4.Try it now
  5. 5.Components
  6. 6.emUSB-Device Audio Media

Enhance your device with audio capabilities

Using emUSB-Device Audio, an embedded device can be transformed into an audio recorder or an audio speaker. An audio jack and dedicated audio hardware is not necessarily available on every design. emUSB-Device Audio allows the device to handle audio data irrespective of the available hardware, for example audio data played from a PC (Linux/Windows/Mac) can be saved directly onto an SD card.

emUSB Device audio headset conference

Typical Applications

The audio class is the foundation for any embedded device handling audio data. Whether it has a microphone or speaker, or whether it simply functions as an audio editor.

Typical applications range from speaker phones, conferencing systems, or headsets, to music instruments, voice recorders, music players, or sports wearables.

Application Samples emUSB-Device Audio

emUSB Device audio conference set

Conference speakerphone

emUSB device audio headset headphones

Headset

mini soundcard

USB sound card

Technical details

SEGGER’s implementation of the Audio class V1.0 is designed with minimal resource usage in mind, especially targeted to embedded devices. The implementation supports the usage of a “speaker” (input/output audio terminal with a feature terminal for controls) and a “microphone” (input/output audio terminal).

The speaker and microphone can be used independently of each other; both can be enabled at the same time allowing audio transfer in either direction.

The Audio class supports adaptive synchronization for OUT endpoints, asynchronous synchronization for IN endpoints and synchronous synchronization type for both directions; commands SET_CUR, GET_CUR, SET_MIN, GET_MIN, SET_MAX, GET_MAX, SET_RES, GET_RES for the speaker interface feature unit controls are supported (volume, mute, etc.).

emUSB-Device-Audio does not provide drivers/codecs for any audio peripherals. Writing a driver to interface with the audio hardware is the responsibility of the customer.

With emUSB-Device-Audio Audio data is transferred in the PCM encoding. The Audio class transfers multiple audio samples in a single packet. In the demo below the speaker interface of the audio class is configured with 2 channels (stereo) and 16 bit data per channel.

emUSB-Packet

Try it now

Download the emUSB-Device Audio demo for the emPower board:

  • Program the emPower with the default application using Embedded Studio
  • Connect the HS USB connector to your PC
  • Select the emUSB-Device Audio demo as your default sound output and sound input device
  • Play audio which will be saved onto the SD card
  • Loopback the emUSB-Device Audio microphone to your speakers to listen to the audio demo

Download sample project for
emPower board

SEGGER emPack - emPower 500

Components

Components required to use the Audio class:

  • emUSB-Device Audio
  • emUSB-Device core
  • emUSB-Device target driver
  • Real-time operating system (embOS or other)

Resource usage

emUSB-Device Audio Media

SEGGR - Video Thumbnail emUSB-Device Audio

Enhance your embedded device with audio capabilities!

More Information

Purchase

  • Pricing

Technology

  • Combining Interfaces/Addons
  • Samples
  • Drivers
  • Performance
  • Resource usage
  • WebUSB

Add-Ons

  • Audio
  • Bulk Component
  • CDC Class
  • CDC-ECM Class
  • CDC-NCM Class
  • DFU Class
  • HID Class
  • IP-over-USB
  • MSD Class
  • MTP Class
  • Printer Class
  • RNDIS Class
  • Video
  • VirtualMSD Component
  • CCID
  • MIDI

About us

  • The Company
  • Partners
  • Job Offers
  • Media
  • Contact us

Support

  • Technical Support
  • Blog
  • Forum
  • Wiki

Downloads

  • Application Notes
  • Embedded Studio
  • embOS
  • emCompress
  • emCrypt
  • emFile
  • emLib
  • emLoad
  • emModbus
  • emNet
  • emPower
  • emSecure
  • emSSH
  • emSSL
  • emUSB-Device
  • emUSB-Host
  • emVNC
  • emWin
  • Flasher
  • Free Utilities
  • IoT
  • J-Link / J-Trace
  • Linux Studio
  • SystemView
  • CE / REACH

Social Media

Headquarters

SEGGER Microcontroller GmbH

Ecolab-Allee 5
40789 Monheim am Rhein, Germany
info@segger.com
Tel.: +49-2173-99312-0
Fax: +49-2173-99312-28

Locations

USA: SEGGER Microcontroller Systems LLC

Boston area
101 Suffolk Lane
Gardner, MA 01440, USA
us-east@segger.com
Tel.: +1-978-874-0299
Fax: +1-978-874-0599

Silicon Valley
Milpitas, CA 95035, USA
us-west@segger.com
Tel.: +1-408-767-4068

China: SEGGER Microcontroller China Co., Ltd.

Room 218, Block A, Dahongqiaoguoji
No. 133 Xiulian Road
Minhang District, Shanghai 201199, China
china@segger.com
Tel.: +86-133-619-907-60

ISO 9001 certified

ISO 9001

30+ years of experience

First-class embedded software tools since 1992
  • Imprint
  • Disclaimer
  • Privacy Policy

© 2022 SEGGER - All rights reserved.