The addition of the DSP – developed internally at Knowles – allows expertise in acoustics, audio processing and software to deliver a customizable platform with such features as voice wake and acoustic event detection.
Knowles is offering samples of the IA-620 microphone, including MEMS microphone with an open digital signal processor (DSP) in a package similar in size to a MEMS microphone found in today’s leading mobile electronic devices. The IA-610 is the industry’s first customizable solution in a single package which simplifies audio design and can reduce bill of material costs.
The IA-610 is also the first embedded device to adopt the MIPI SoundWire interface, which reduces pin-count and power consumption.
The enhanced processor is also capable of connecting to all major audio and data interfaces, such as PDM, I2S, SDW, SPI, UART, and I2C. The IA-610 includes a low power sound detector (LPSD), an audio processing algorithm with acoustic activity detection technology licensed as an IP block, from Sensory Inc. (Santa Clara, Calif.) that can be enabled.
Sensory was founded in 1994 and pioneered neural network approaches for embedded speech recognition in consumer electronics. Sensory’s technologies have shipped in over 2 billion products.
Knowles said it expects volume production of the IA-610 later in 2017.
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