Paralinguistic Privacy Protection at the Edge

11/04/2020
by   Ranya Aloufi, et al.
11

Voice user interfaces and digital assistants are rapidly entering our homes and becoming integrated with all our devices. These always-on services capture and transmit our audio data to powerful cloud services for further processing and subsequent actions. Our voices and raw audio signals collected through these devices contain a host of sensitive paralinguistic information that is transmitted to service providers regardless of deliberate or false triggers. As sensitive attributes like our identity, gender, indicators of mental health status, alongside moods, emotions and their temporal patterns, are easily inferred using deep acoustic models, we encounter a new generation of privacy risks by using these services. One approach to mitigate the risk of paralinguistic-based privacy breaches is to exploit a combination of cloud-based processing with privacy-preserving on-device paralinguistic information filtering prior to transmitting voice data. In this paper we introduce EDGY, a new lightweight disentangled representation learning model that transforms and filters high-dimensional voice data to remove sensitive attributes at the edge prior to offloading to the cloud. We evaluate EDGY's on-device performance, and explore optimization techniques, including model pruning and quantization, to enable private, accurate and efficient representation learning on resource-constrained devices. Our experimental results show that EDGY runs in tens of milliseconds with minimal performance penalties or accuracy losses in speech recognition using only a CPU and a single core ARM device without specialized hardware.

READ FULL TEXT

Authors

page 10

09/18/2019

Emotion Filtering at the Edge

Voice controlled devices and services have become very popular in the co...
07/29/2020

Privacy-preserving Voice Analysis via Disentangled Representations

Voice User Interfaces (VUIs) are increasingly popular and built into sma...
08/09/2019

Emotionless: Privacy-Preserving Speech Analysis for Voice Assistants

Voice-enabled interactions provide more human-like experiences in many p...
05/27/2022

Locally Authenticated Privacy-preserving Voice Input

Increasing use of our biometrics (e.g., fingerprints, faces, or voices) ...
04/22/2021

Protecting gender and identity with disentangled speech representations

Besides its linguistic content, our speech is rich in biometric informat...
05/11/2019

Encrypted Speech Recognition using Deep Polynomial Networks

The cloud-based speech recognition/API provides developers or enterprise...
12/31/2019

Privacy for Rescue: A New Testimony Why Privacy is Vulnerable In Deep Models

The huge computation demand of deep learning models and limited computat...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.