This disclosure describes techniques for obtaining improved bass response from a smart home device that has a small factor. An exciter positioned at the base of the smart home device is utilized to improve the bass response by generating additional sound pressure from the surface that the smart display is placed upon. The type of surface is determined based on transmitting a gated (low pass filtered) impulse. Based on received feedback, the exciter(s) are selectively activated. Inputs from a microphone and an accelerometer are utilized to determine the transfer impedance of the contact surface. A smart amplifier is utilized to drive the exciter based on determined transfer impedance and current and voltage sensing (IV sense). Determination of the type of contact surface and its characteristics is made at a time of switching on of the smart home device and then periodically at predetermined intervals and/or when the smart home device is detected as having been moved.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.