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Environmental Sound Classification on An Embedded Hardware Platform

Created by
  • Haebom

Author

Gabriel Bibbo, Arshdeep Singh, Mark D. Plumbley

Outline

This paper analyzes performance changes when deploying a pre-trained, large-scale audio neural network on resource-constrained devices such as the Raspberry Pi. We experimentally study the impact of CPU temperature, microphone quality, and audio signal volume on performance, revealing that increased temperature due to sustained CPU usage triggers the Raspberry Pi's automatic slowdown mechanism, affecting inference latency. Furthermore, we demonstrate that microphone quality and audio signal volume on inexpensive devices such as the Google AIY Voice Kit impact system performance. We experience significant challenges related to library compatibility and the unique processor architecture requirements of the Raspberry Pi, making the process less straightforward compared to a standard computer (PC). These observations can help researchers develop more compact machine learning models, design heat-dissipating hardware, and select appropriate microphones when deploying AI models on edge devices for real-time applications.

Takeaways, Limitations

Takeaways:
Clarifies the challenges encountered in real-time deployment of audio neural networks on edge devices such as the Raspberry Pi (impact of increased CPU temperature, microphone quality, and audio signal volume).
We present important considerations (hardware constraints, environmental factors) for developing and deploying real-time audio classification models in edge device environments.
Suggesting future research directions for developing and optimizing audio models for more efficient and robust edge devices (development of compact models, design of heat dissipation hardware, and microphone selection).
Limitations:
Experimental results are limited to specific hardware (Raspberry Pi) and microphone (Google AIY Voice Kit). Further research is needed to determine generalizability across a variety of hardware and environments.
Lack of specific solutions to difficulties encountered during actual deployment, such as library compatibility and processor architecture issues.
Lack of specific information about the type and size of the audio neural network used in the experiments.
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