SiteHive Enviro Pro Audio Classifier

🔊🔎 What is the Audio Classifier?

Harnessing the power of AI, the SiteHive Audio Classifier automatically identifies site sounds so that you don’t have to. It's a groundbreaking tool that's integrated into SiteHive Enviro Pro, and it uses advanced AI technology to analyse and identify the source of noise. The Audio Classifier is designed to help Environmental Managers save time and efficiently monitor and control noise by eliminating the need to manually listen to and analyse audio files.

We are continually improving and innovating based on this revolutionary technology, we will be continuing to improve the performance of the SiteHive Audio Classifier, and would love for you to let us know both what you think of it and ways you could use it.

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Key features

Automatic identification: Instantly identifies noise sources, and colour codes them based on whether they are construction related or not.

Real-time analysis: Analyses noise events in real time by classifying audio files captured by SiteHive Hexanode Devices.

Comprehensive noise database: Compares captured sounds to a vast database of sounds to determine the likeliest noise source.

Instant labels: Provides clear, instant labels for each audio file, making it easy to differentiate between site-generated noise and external noise.

Benefits of using the Audio Classifier

Time-saving: Avoid the time-consuming task of manually listening to audio files.

Trend analysis: Quickly identify trends in noise events throughout the day.

Immediate source identification: Easily determine if noise, dust, or vibration is caused by site activities.

Noise contribution analysis: Understand the contribution of site works to overall noise levels.

Automated reporting: Simplify compliance reporting with automated explanations for noise events.

How to use the Audio Classifier

On the dashboard

Log in to the SiteHive Dashboard
Go to SiteHive Dashboard
Select the Monitoring Point
Navigate to the Media Section
On the monitoring point page, go to the 'Media' section to see audio files.
Review Audio Files
Each audio file has a label indicating the predicted sound source and confidence percentage, e.g., "96% Construction Hand Tools" or "85% Construction Heavy Plant or Vehicle."

Investigating events

Select Events
Go to the 'Events' section and select the events you want to investigate.
Click 'Investigate & Explain'
Click the 'Investigate & Explain' button to see detailed information about the selected events.
View detailed information about each event in the 'Explain Events' dialog, including media, audio clips and classifier labels.

Understanding spectrograms

What is a spectrogram?

A spectrogram is a visual representation of the spectrum of frequencies in a sound or other signal as they vary with time. It provides a detailed view of the noise characteristics over a period, showing the intensity of different frequencies. In Enviro Pro, the spectrogram for each audio file can be found next to the camera images. The SiteHive Audio Classifier is trained on thousands of audio files that we see and hear on sites every day.

Each spectrogram is shown as:

Time (X-axis): Represents the duration of the recording.
Frequency (Y-axis): Shows the range of frequencies from low to high.
Intensity (Colour): Indicates the loudness of each frequency. Brighter colours represent higher intensity.

Example of a spectrogram of a siren:

Example of a spectrogram of a seagull:

Example of a spectrogram of a hydraulic hammer:

Confidence level

Each audio file in SiteHive Enviro Pro is classified against a broad database of known sounds. There are a range of top level categories, e.g. Human Activity, Animal Activity, Ports, Construction etc. Some categories, in particular the Construction category, then have deep subsets of labels that can classify for example exactly what is happening on site, for example it can tell whether plant is idling, operating, or even moving.

Each file potentially has multiple labels, with the most dominant sound presented as the primary label in the media reel. The % associated with each label is the confidence that the SiteHive Audio Classifier has that that sound is present in the file. In the example below, the audio classifier is 91% confident that hydraulic hammering is present in the sound file. When clicking the file more details can be seen, including a secondary sound of heavy plant operating, but only with an 18% confidence in this instance.

Boost your noise management strategy

Let SiteHive Hexanode devices listen to your site while you focus on proactively controlling and reducing noise.

SiteHive Enviro Pro does the core work for you:

Records all noise exceedances, 24/7
Classifies the cause of noise exceedances in real-time
Sends a notification when a noise threshold is exceeded
Provides reporting with sound labels, contextual audio and video recordings

And allows you to focus on and control the more important things:

Pro-actively take action to reduce noise generated by your site
Keep stakeholders informed with easy-to-share and easy-to-read reports
Respond to community complaints swiftly with backed-up contextual information

The SiteHive Enviro Pro Audio Classifier is a powerful tool that enhances site monitoring and compliance reporting. By automating the identification and categorisation of noise exceedances it saves time and allows you to focus on proactively managing and reducing noise on your site.