Detailed information BeClear SHF
Detailed information BeClear SHF
Market Focus and Applicability
BeClear SuperHandsFree (SHF) provides high quality, clear speech for the use cases of speech recognition and communication at larger distances under reverberant and noisy conditions. BeClear SHF deals with both diffuse and point-noise sources.
The figure below schematically illustrates the BeClear SHF algorithm. By means of a fast tracking, free-running beam (the beam in orange), the SHF algorithm generates one or more focused beams (the beams in blue) capturing the coherent sources. The illustration is schematically only, because through the BeClear building blocks, BeClear does not make beams in the traditional sense.
Technical background
By design, the BeClear SHF algorithm will automatically adapt to the number of microphones and the geometry they are placed in. Thus, BeClear SHF provides maximum freedom in designing the form factor of your device BeClear SHF can however also be combined with BeClear Multichannel AEC for more than 2 AEC-reference signals.
As illustrated in the side figure, the SHF algorithm provides for a customizable application layer for constructing the desired output signal based on the available beams. E.g.
BeClear SHF comes bundled with a set of pre-defined application layers that are built based on Philips’ extensive domain knowledge.
Differentiators of the BeClear technologies are - No need for explicit double talk detector - Limited divergence during double talk - Especially beneficial for Stereo AEC and higher - Reduced complexity mode for bandwidth limited (LFE) signal • Non-traditional beamforming in near-field and far-field • Noise suppression
- High clarity index
- Fast adaptation for stationary and non-stationary noise sources
- Robust performance in challenging environments
- Support for point noise source suppression
Target Market Segments and key value propositions
Technology Partners
BeClear is deployed in the market on ARM Cortex (e.g A53, A35) based SoCs from several chipset vendors.
BeClear does not include wake-word detection software. Philips partners with Sensory and Amazon for the wake-word detection.
Future Markets, and roadmap plans to address target future markets
While BeClear SHF already provides robust point noise source suppression, the BeClear roadmap will continue to provide better performance for even more negative SNR for far field and near field.
Product Specifications
The overall description and block diagram of the functional architecture is illustrated in the figure below
The key SW and processing algorithm blocks are:
The functional characteristics include:
Software and Tools that Philips provides are:
