Description
Hearing-threshold apparatus for medical physics education
Enquire about the LEMI-55 for educational experiments on sound frequency, auditory sensitivity and hearing-threshold curves in a supervised medical physics course. Share the course requirements, intended users and number of teaching stations. Confirm the signal source, headset, measurement references, operating instructions and any calibration documentation before purchase. This educational listing does not establish approval for clinical diagnosis or patient screening.
Laboratory equipment enquiries across Jharkhand and West Bengal
Dhanbad Sales welcomes enquiries from individual buyers, schools, colleges, universities, training centres, research and industrial laboratories, healthcare education providers, NGOs and government institutions throughout Jharkhand and West Bengal. Product suitability is assessed against your specific teaching or laboratory application.
Share your specification or syllabus, quantity, budget, delivery city and PIN code, and required timeline. Identify any setup, demonstration, calibration or documentation requirements separately. Exact specifications, included accessories, current availability, price, applicable warranty and delivery or support feasibility are confirmed in the quotation. No certification, calibration service or manufacturer authorisation is implied unless confirmed in writing.
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Features
- Comprehensive auditory testing
- Gain hands-on experience
- Real-world applications
- User-friendly design
Introduction
The study of human hearing and the measurement of hearing thresholds are essential components of medical physics. Understanding how sound is perceived and how auditory sensitivity varies across frequencies is crucial in the design and application of hearing aids, diagnostic tools, and treatments for hearing impairments. The LEMI-55 Apparatus provides a practical approach to measuring the hearing threshold of the human ear and exploring key concepts related to sound intensity, loudness, and auditory perception.
This apparatus is specifically designed for use in medical physics courses, providing medical students with the tools to conduct experiments on hearing thresholds and auditory sensitivity. The apparatus includes a signal generator, audio amplifier, and full-frequency-band headset, offering a comprehensive setup for evaluating human hearing abilities across a range of frequencies.
The LEMI-55 Apparatus allows students to conduct the following experiments:
1. Measure Hearing and Hearing Threshold: Measure the hearing threshold of the human ear by applying sound waves at different frequencies and intensity levels. This experiment enables students to determine the minimum sound level at which the ear can perceive sound, providing insight into the sensitivity of the auditory system.
2. Determine the Hearing Threshold Curve: Plot the hearing threshold curve for the human ear, which shows the minimum detectable sound intensity at various frequencies. This curve helps illustrate the frequency-dependent sensitivity of the human ear and can be compared with standard audiograms used in clinical audiology.
The LEMI-55 Apparatus provides valuable hands-on experience for students, enabling them to:
1. Gain a deeper understanding of how sound intensity and frequency affect human hearing sensitivity.
2. Learn how to measure the hearing threshold and determine the limits of human auditory perception.
3. Explore the concept of the auditory curve and its practical applications in audiology and medical diagnostics.
4. Develop skills in experimental design, data collection, and analysis, reinforcing theoretical knowledge with real-world applications in medical physics.
The instruction manual includes clear experimental configurations and setup instructions for conducting hearing threshold experiments, step-by-step guidance for measuring hearing thresholds, plotting hearing curves, and interpreting results, detailed explanations of the theoretical principles behind hearing, sound intensity, and frequency sensitivity, and example results and data analysis to aid in the understanding of the concepts.
For further exploration of hearing, sound perception, and the principles of audiology, refer to the Experiment Theory and Contents. The LEMI-55 Apparatus is an essential tool for medical physics students, providing them with the opportunity to explore the fundamentals of human hearing and gain practical experience in auditory measurement.
Parts and Specifications
| Description | Specifications |
| Signal source | Frequency range: 20 ~ 20 kHz; standard sine wave (smart key controlled) |
| Digital frequency meter | 20 ~ 20 kHz, resolution 1 Hz |
| Digital sound strength meter (dB meter) | relative -35 dB to 30 dB |
| Headset | monitoring grade |
| Power consumption | < 50 W |
| Instruction manual | electronic version |
