Cochlear Simulator

20
15000 Hz
1000 Hz

Welcome to the Cochlear Simulator!

This simulator visualizes the electrical signals sent to the brain by a cochlear implant. A cochlear implant is a device that helps people with severe hearing loss or deafness by bypassing the damaged parts of the ear and directly stimulating the auditory nerve. The simulator uses the Web Audio API and the HTML5 Canvas API to create a real-time visualization of the electrical signals.

Use the controls to adjust the number of electrodes, enable or disable the low-pass and high-pass filters, and change the filter frequencies. You can also interact with the electrodes to see how the electrical signals change based on the frequency content of the audio input.

Try speaking into your microphone or playing some music to see the visualization in action!

Cochlear Implant Technology Overview:

A cochlear implant consists of two main components: an external processor and an internal implant. The external processor captures sound from the environment, processes it into electrical signals, and transmits the signals to the internal implant through a coil placed on the skin behind the ear.

The internal implant is surgically placed under the skin behind the ear and contains a receiver-stimulator that converts the electrical signals into electrical impulses. These impulses are sent to an array of electrodes inserted into the cochlea, the spiral-shaped structure of the inner ear responsible for hearing.

Each electrode stimulates a different region of the auditory nerve based on the frequency content of the audio signal. The brain interprets these electrical impulses as sound, allowing the user to perceive speech, music, and other sounds.

How the Simulator Works:

The Cochlear Simulator captures audio input from your microphone and processes it in real time using the Web Audio API. The audio data is analyzed to extract frequency information, which is then visualized on the canvas element as a series of bars representing different frequency bands.

The simulator also includes low-pass and high-pass filters that can be adjusted to modify the audio signal before it is visualized. The filters allow you to focus on specific frequency ranges and see how they affect the electrical signals sent to the brain.

The electrode visualization shows a circular array of electrodes that light up based on the energy of a specific frequency band in the audio signal. The color of each electrode changes dynamically as the audio input changes, providing a visual representation of how cochlear implants stimulate the auditory nerve.

Interactive Controls:

Use the controls below to customize the visualization and explore how cochlear implants work:

How to Use the Simulator:

To use the Cochlear Simulator, follow these steps:

  1. Make sure your device has a microphone and is connected to the internet.
  2. Allow the simulator to access your microphone when prompted by your browser.
  3. Adjust the controls to customize the visualization and explore the effects of the filters.
  4. Speak into your microphone or play some music to see the visualization in action.
  5. Interact with the electrodes to see how the electrical signals change based on the frequency content of the audio input.

Browser Compatibility:

The Cochlear Simulator is designed to run in modern web browsers that support the Web Audio API and the HTML5 Canvas API. The simulator is compatible with the following browsers:

If you encounter any issues with the simulator, please try using one of the supported browsers for the best experience.

Technical Details:

The Cochlear Simulator is built using HTML, CSS, and JavaScript, with the Web Audio API and the HTML5 Canvas API for audio processing and visualization. The simulator is designed to run in modern web browsers that support these APIs, such as Google Chrome, Mozilla Firefox, and Microsoft Edge.

The simulator uses the MediaStreamAudioSourceNode to capture audio input from the user's microphone and process it in real time. The audio data is analyzed using the AnalyserNode to extract frequency information, which is then visualized on the canvas element. The simulator also includes low-pass and high-pass filters that can be adjusted by the user to modify the audio signal.

The electrode visualization is created using div elements positioned in a circular pattern around the canvas. The color of each electrode is determined by the energy of a specific frequency band in the audio signal. The simulator includes controls for adjusting the number of electrodes, enabling or disabling the filters, and changing the filter frequencies to customize the visualization.

The Cochlear Simulator is responsive and can be used on desktop, laptop, and mobile devices with a microphone and a modern web browser. The simulator does not require any additional software or plugins to run and can be accessed directly from the web. The source code for the simulator is available on GitHub for educational and non-commercial use.

The simulator is hosted on a secure server with HTTPS encryption to protect user data and ensure a safe browsing experience. The simulator does not collect any personal information from users and does not use cookies or tracking scripts. The simulator is designed to respect user privacy and provide an interactive learning experience for exploring cochlear implant technology.

Privacy:

The Cochlear Simulator does not store or transmit any audio data from the user's microphone. The audio processing and visualization are done locally on the user's device, and no data is sent to external servers or third-party services. The simulator respects user privacy and does not collect any personal information.

Disclaimer:

This simulator is intended for educational and entertainment purposes only. It does not replicate the exact functionality of a cochlear implant or provide medical advice. If you have hearing loss or are considering a cochlear implant, please consult a qualified healthcare professional for diagnosis and treatment.

Future Updates:

The Cochlear Simulator is an ongoing project, and future updates may include additional features, improvements, and optimizations. Some of the planned updates for the simulator include:

Feedback:

If you have any feedback, suggestions, or questions about the Cochlear Simulator, please feel free to contact me. Your input is valuable and helps improve the quality of the simulator for future users.

Share:

If you find the Cochlear Simulator interesting or informative, please consider sharing it with others who may benefit from learning about cochlear implants and hearing technology. You can use the social media buttons below to share the simulator on your favorite platforms.

References:

Cochlear Implant - Wikipedia
Cochlear Implants - NIDCD

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