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AcousticBF

insist_66
Associate II

‎2023-12-12 12:39 AM

Can the AcousticBF beamforming algorithm from FP-AUD-SMARTMIC1 algorithm be used on the entry-level kit of BlueCoin board (STEVAL-BCNCS01V1) to achieve audio acquisition at a sampling rate of 48kHz?

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Federica Bossi
ST Employee

‎2023-12-12 04:31 AM

Hi @insist_66 ,

Welcome to ST Community!

The library AcousticBF can't work at 48KHz 

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insist_66
Associate II

‎2023-12-12 05:52 AM

The audio signal is obtained from the digital MEMSM Kefeng as a 1-bit PDM signal, which is then converted into a 16 bit PCM sample by a PDM to PCM conversion filter at 16 kHz. Using the AcousticBF algorithm in FP-AUD-SMARTMIC1, can a sampling rate of 48KHZ be achieved

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Federica Bossi
ST Employee

‎2023-12-13 01:43 AM

Hi @insist_66 ,

I think there is a misunderstanding: the library only works up to 16KHz, both input and output.
We don't have libraries or examples that from a 16KHz input signal would allow a 48KHz output signal.

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