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X-CUBE-AUDIO

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Audio effects software expansion for STM32Cube

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The X-CUBE-AUDIO package contains a comprehensive set of audio processing components for the STM32F4 and STM32F7 Series of microcontrollers. It is composed of high-quality efficient software libraries and modules ready to be embedded into a variety of audio appliances. All audio binaries are delivered with internal 32-bit processing and support either 16- or 32-bits I/O buffers.

Each audio effect application in X-CUBE-AUDIO expects a 16-bit stereo audio input signal at a 48-kHz sampling rate, using wave format with I/O data buffers dimensioned for 10 ms.

Key Features
- STM32Cube audio effect modules and libraries for the STM32F4 and STM32F7 Series of microcontrollers
- 16-bit wave format stereo input at 48 kHz expected by Xcube audio applications
- 32-bit resolution audio library computation and 16- or 32-bit I/O buffers supported
- Bass manager (BAM): management of the low frequencies of a stereo signal, including compressor and limiter
- Generic biquad filter (BIQ): IIR second order filters and predefined standard filters such as peak removal, loudness, notch, voice enhancer, low-pass, and high-pass frequency response for transducer equalization
- Clock drift compensation (CDC): compensation of drift by smoothly adding or removing one sample
- Gain manager (GAM): management of input signal volume with negative gains in range [-80 dB: 0 dB] with 0.5 dB granularity without compression
- Graphical equalizer (GREQ): 5, 8 or 10 bands. Adjustable gain factors from -12 dB to +12 dB in standard mode
- Headphone virtualizer (HPV): audio virtualization for headphones from a 1.0/2.0/5.1/7.1 input stream to a virtualized 2.0 output stream
- MP3 Decoder (MP3Dec): decoder for MPEG-1,2 or 2.5 formats (for layers 1, 2 and 3) supporting constant, free format or VBR variable bit rate for mono or stereo audio input streams with PCM (Pulse Code Modulation) decoded output.
- MP3 encoder (MP3Enc): encoder for MPEG-1,2 or 2.5 formats (for layer 3 only) supporting fixed or free format bit rate for mono or stereo audio input streams.
- Sampling rate converter (SRC236 and SRC441):
  
  sampling frequency conversion from any rate with a ratio of 2, 3, 6, 3/2, 1/2, 1/3, 1/6, or 2/3
  
  sampling frequency conversion from 44.1 kHz to 48 kHz
- Omni surround multichannel virtualizer (OMNI2):
  
  audio virtualization for loudspeakers from a 1.0/2.0/5.1/7.1 input stream to a virtualized 2.0 output stream (including stereo widening effect).
  
  Omni surround stereo widener (OMNI2_SW only) audio virtualization for loudspeakers from a 1.0/2.0 input stream to a widened 2.0 output stream.
- Smart volume control (SVC): management of audio input signal volume including a compression with gains in the range [-80 dB:+36 dB]
- Sound detector (SDR): audio signals detection used to trigger signal processing such as speech recognition
- Sound meter (SMR): level measurement on a logarithmic scale
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Part Number	General Description	Software Version	Supplier	Download
X-CUBE-AUDIO	Audio effects software expansion for STM32Cube	1.1.1	ST	x Warning Please note, that cookies should be enabled for successful downloading the software. x Get Software Something went wrong with the server request. Please try again in a few moments. If you have an account on my.st.com, login and download the software without any further validation steps. If you don't want to login now, you can download the software by simply providing your name and e-mail address in the form below and validating it. This allows us to stay in contact and inform you about updates of this software. For subsequent downloads this step will not be required for most of our software. First Name: Last Name: E-mail address: Please enter a valid e-mail address. I have read and understood the Sales Terms & Conditions, Terms of Use and Privacy Policy Please, accept the rules, in order to proceed. 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Such Open Source Software is supplied under the applicable Open Source Terms and is not subject to the terms and conditions of license hereunder. “Open Source Terms” shall mean any open source license which requires as part of distribution of software that the source code of such software is distributed therewith or otherwise made available, or open source license that substantially complies with the Open Source definition specified at www.opensource.org and any other comparable open source license such as for example GNU General Public License (GPL), Eclipse Public License (EPL), Apache Software License, BSD license and MIT license. This software package may also include third party software as expressly specified in the software package subject to specific license terms from such third parties. Such third party software is supplied under such specific license terms and is not subject to the terms and conditions of license hereunder. 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THIS SOFTWARE PACKAGE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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Product Specifications (1)

	Resource title		Latest update
PDF	DB2940 Audio effects libraries software expansion for STM32Cube 6.0		08 Apr 2019	08 Apr 2019 DB2940 Audio effects libraries software expansion for STM32Cube 6.0

User Manuals (5 of 16)

Presentations (3)

	Resource title	Latest update
PDF	STM32 and STM8 embedded software solutions 8.0	14 Apr 2020	14 Apr 2020 STM32 and STM8 embedded software solutions 8.0
PDF	STM32Cube and Azure RTOS overview 1.0	09 Dec 2020	09 Dec 2020 STM32Cube and Azure RTOS overview 1.0
PDF	STM32Cube ecosystem overview - Making STM32 development easier 1.2	11 Aug 2020	11 Aug 2020 STM32Cube ecosystem overview - Making STM32 development easier 1.2

Brochures (2)

	Resource title		Latest update
PDF	STM32 Open Development Environment Brochure 17.09		11 Sep 2018	11 Sep 2018 STM32 Open Development Environment Brochure 17.09
PDF	Sensor & motion algorithm software pack for STM32Cube 1.0		29 Oct 2018	29 Oct 2018 Sensor & motion algorithm software pack for STM32Cube 1.0

License Agreement (1)

	Resource title		Latest update
PDF	SLA0048 Mix Ultimate Liberty+OSS+3rd-party V1 - SOFTWARE LICENSE AGREEMENT 6.10		09 Dec 2020	09 Dec 2020 SLA0048 Mix Ultimate Liberty+OSS+3rd-party V1 - SOFTWARE LICENSE AGREEMENT 6.10

	Resource title	Latest update
PDF	UM1655 Omni2 multichannel library software expansion for STM32Cube 7.0	16 Jan 2018	16 Jan 2018 UM1655 Omni2 multichannel library software expansion for STM32Cube 7.0
PDF	UM1778 BAss Manager library software expansion for STM32Cube 6.0	11 Jan 2018	11 Jan 2018 UM1778 BAss Manager library software expansion for STM32Cube 6.0
PDF	UM1625 Biquad library software expansion for STM32Cube 4.0	16 Jan 2018	16 Jan 2018 UM1625 Biquad library software expansion for STM32Cube 4.0
PDF	UM1995 Clock drift compensation library software expansion for STM32Cube 3.0	16 Jan 2018	16 Jan 2018 UM1995 Clock drift compensation library software expansion for STM32Cube 3.0
PDF	UM2312 Development checklist for STM32Cube Expansion Packages 3.0	06 Sep 2019	06 Sep 2019 UM2312 Development checklist for STM32Cube Expansion Packages 3.0
PDF	UM2285 Development guidelines for STM32Cube Expansion Packages 2.0	10 Sep 2020	10 Sep 2020 UM2285 Development guidelines for STM32Cube Expansion Packages 2.0
PDF	UM2388 Development guidelines for STM32Cube firmware Packs 1.0	27 Jul 2020	27 Jul 2020 UM2388 Development guidelines for STM32Cube firmware Packs 1.0
PDF	UM2006 Gain Manager library software expansion for STM32Cube 2.0	16 Jan 2018	16 Jan 2018 UM2006 Gain Manager library software expansion for STM32Cube 2.0
PDF	UM1798 Graphical equalizer library software expansion for STM32Cube 5.0	09 Jan 2018	09 Jan 2018 UM1798 Graphical equalizer library software expansion for STM32Cube 5.0
PDF	UM2024 Headphone virtualization library software expansion for STM32Cube 3.0	16 Jan 2018	16 Jan 2018 UM2024 Headphone virtualization library software expansion for STM32Cube 3.0
PDF	UM1633 Omni2 stereo widening library software expansion for STM32Cube 9.0	16 Jan 2018	16 Jan 2018 UM1633 Omni2 stereo widening library software expansion for STM32Cube 9.0
PDF	UM1641 Sampling rate conversion SRC236 library software expansion for STM32Cube 6.0	16 Jan 2018	16 Jan 2018 UM1641 Sampling rate conversion SRC236 library software expansion for STM32Cube 6.0
PDF	UM1640 Sampling rate conversion SRC441 library software expansion for STM32Cube 6.0	16 Jan 2018	16 Jan 2018 UM1640 Sampling rate conversion SRC441 library software expansion for STM32Cube 6.0
PDF	UM1642 Smart volume control library software expansion for STM32Cube 7.0	16 Jan 2018	16 Jan 2018 UM1642 Smart volume control library software expansion for STM32Cube 7.0
PDF	UM2184 Sound detector library software expansion for STM32Cube 1.0	16 Jan 2018	16 Jan 2018 UM2184 Sound detector library software expansion for STM32Cube 1.0
PDF	UM2031 Sound meter library software expansion for STM32Cube 1.0	25 Jan 2018	25 Jan 2018 UM2031 Sound meter library software expansion for STM32Cube 1.0

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X-CUBE-AUDIO

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Product Specifications (1)

User Manuals (5 of 16)

Presentations (3)

Brochures (2)

License Agreement (1)