Smart Home Automation

Add a voice control interface to smart home devices using Cirrus Logic’s complete audio path solution including low-power, always-on voice processors with ASR enhance.

Smart Home Automation


Voice Processor
  • HD Voice/wideband and narrow-band support
  • Voice Activity Detector (VAD) for low power “Always on” command recognition applications
  • ASR Enhance™ pre-processor for increased ASR accuracy in noise
  • Transmit (Tx) and receive (Rx) noise elimination
  • AEC plus non-linear residual echo suppressor for superior full-duplex echo-free speakerphone operation
  • Ambient aware parametric EQ and automatic level control for both Tx and Rx voice streams
  • Automatic volume control for Rx output
  • Spectrally matched comfort noise generator for Tx voice and comfort noise generator for Rx stream
Portable Codec
  • Integrated stereo 24 bit low power codec
    • 2 ADC, 99 dB SNR, -88 dB THD+N
    • 2 DAC, 98 dB SNR, -88 dB THD+N
  • Up to 96 kHz sample rate
  • Digital signal processing engine
  • Programmable automatic level control (ALC)
Speaker Amplifier
  • Hybrid Class-D architecture
    • 1.35 W into 8 ohms @ 1% THD+N
    • 98 dB SNR, 0.02% THD+N @ 1W
  • Over-temperature protection
  • Short-circuit protection
MEMS Microphone
  • Analog and digital
  • Top and bottom ports
  • Signal-to-noise ratio (SNR):
    • 65 dB [analog]
    • 63 dB [digital]
  • Acoustic overload point (AOP) @ 10% THD:
    • 130 dB SPL [analog]
    • 120 dB SPL [digital]
  • Sensitivity with ±1 dB tolerance:
    • -38 dBV/Pa [analog]
    • -26 dBFS/Pa [digital]

Portable Codecs

Supported Products
  • CS42L51
    Low-Power Stereo Codec with Headphone Amplifier
  • CS42L52
    Low Power Codec with Class D Speaker Driver
  • WM8962/62B
    Ultra Low Power Codecs for Portable Audio Applications
  • WM8993
    Codec with Stereo Speaker Drivers and Class W Headphone Driver

MEMS Microphones

Supported Products
  • WM7121PE
    Top Port Analog Silicon Microphone
  • WM7132PE
    Bottom Port Analog Silicon Microphone
  • WM7331E
    Bottom Port Analog Silicon Microphone
  • WM7216E
    Low Power Top Port Digital Silicon Microphone
  • WM7236E
    Bottom Port Digital Silicon Microphone

Class-D Speaker Amplifiers

Supported Products
  • CS35L00
    Low Power Class-D Audio Amplifiers
  • CS35L01/03
    Low Power Class-D Audio Amplifiers
  • CS35L32
    5 V Boosted Class-D Amplifier With Integrated Dual LED Drivers
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