Piezoelectric array elements for sound reconstruction with a digital input

AAA CARRENO, DC GONZALEZ… - US Patent …, 2019 - Google Patents
Various examples are provided for digital sound reconstruction using piezoelectric array
elements. In one example, a digital loudspeaker includes a fixed frame and an array of …

Spatial distribution of distortion and spectrally shaped quantization noise in digital micro-array loudspeakers

MJ Hawksford - Journal of the Audio Engineering Society, 2007 - aes.org
A concept for a digital loudspeaker array, composed of clusters of micro-radiating elements
that form individual digital-to-acoustic converters, is studied. In this scheme a large-scale …

Towards a digital sound reconstruction MEMS device: Characterization of a single PZT based piezoelectric actuator

A Arevalo, D Conchouso, D Castro… - … Conference on Nano …, 2015 - ieeexplore.ieee.org
In this paper we report the fabrication and characterization of a single piezoelectric actuator
for digital sound reconstruction. This work is the first step towards the implementation of a …

Direct acoustic digital-to-analog conversion with digital transducer array loudspeakers

J Mendoza-Lopez, SC Busbridge, PA Fryer - Journal of the Audio …, 2007 - aes.org
Different direct-converting, digitally driven loudspeaker array prototypes have been
developed with moving-coil transducers. An evaluation of the radiated sound-field quality in …

Alternative encoding techniques for digital loudspeaker arrays

F Kontomichos, J Mourjopoulos, NA Tatlas - Audio Engineering Society …, 2007 - aes.org
ABSTRACT Recent developments in Digital Loudspeakers have resulted in the introduction
of Digital Transducer Arrays (DTA). In most implementations, DTA loudspeakers are driven …

Design and performance of a sigma–delta digital loudspeaker array prototype

NA Tatlas, F Kontomichos, J Mourjopoulos - Journal of the Audio …, 2009 - aes.org
Digital loudspeaker arrays (DLAs) are electroacoustic transducers reconstructing acoustic
signals out of binary audio streams, usually consisting of a digital signal processing module …

Digital electrostatic acoustic transducer array

A Arevalo, D Castro, D Conchouso… - 2016 IEEE 11th …, 2016 - ieeexplore.ieee.org
In this paper we present the fabrication and characterization of an array of electrostatic
acoustic transducers. The array is micromachined on a silicon wafer using standard micro …

Performance analysis of digital loudspeaker arrays

BR Pedersen, F Kontomichos… - Journal of the Audio …, 2008 - aes.org
Digital loudspeaker arrays currently are based on small moving-coil loudspeakers to
reconstruct acoustic signals from binary audio streams. An overview of significant …

Sound field characterisation in audio reproduction with the bit-grouped digital transducer array

J Mendoza-López, SC Busbridge, PA Fryer - Audio Engineering Society …, 2006 - aes.org
ABSTRACT A bit-grouped digital transducer array loudspeaker with different numbers of
nominally identical transducers for each bit has been developed. The direct digital-to …

Limitations of All-Digital, Networked Wireless, Adaptive Audio Systems

J Mourjopoulos - Audio Engineering Society Conference: 30th …, 2007 - aes.org
Future digital audio delivery systems, especially for home-based multichannel applications,
will greatly benefit from the evolution of all-digital wireless networked receivers integrating …