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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
Get Software
| Part Number | General Description | Software Version | Supplier | GitHub link | Download |
|---|---|---|---|---|---|
| X-CUBE-AUDIO | Audio effects software expansion for STM32Cube | 1.1.1 | ST | - |
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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. EXCEPT AS EXPRESSLY PERMITTED HEREUNDER AND SUBJECT TO THE APPLICABLE LICENSING TERMS FOR ANY THIRD-PARTY SOFTWARE INCORPORATED IN THE SOFTWARE PACKAGE AND OPEN SOURCE TERMS AS APPLICABLE, NO LICENSE OR OTHER RIGHTS, WHETHER EXPRESS OR IMPLIED, ARE GRANTED UNDER ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF STMICROELECTRONICS OR ANY THIRD PARTY. |
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