DhwaniAurica hearing protection and conservative solution
DhwaniAurica earplugs

Occupational Audiometry offers the most respected mobile audiometric screening programmes established across the whole of globe

State of the art mobile screening units and a team of qualified senior grade audiologists ensure you receive the most comprehensive and professional service at affordable prices.

What is Audiometric Testing?

Audiometric testing is a screening technique that is used to detect damage caused by exposure to noise. The procedure of standard air and bone conduction, using masking as necessary, allows for the early detection of hearing problems. Preventative action can be identified, including medical referrals as necessary.

Occupational Audiometry has a team of qualified Audiologists with many years experience . They are of Senior Grade and are fully competent at carrying out the testing, with a knowledge of the relevant International Standards. They are responsible for consistent testing and are able to refer individuals for further medical opinion. The Audiologist will discuss the aspects of hearing safety and the importance of wearing hearing protection with each individual.

Occupational Audiometry screens on sight using a purpose built Mobile Unit. The Unit contains a waiting area, consulting room and a sound proof booth complying with the above regulations. It is fitted with the latest DhwaniAurica -Audiozo Diagnostic Autometer which allows for a very accurate assessment.

The Full Screening Programme

The consultation begins with a questionnaire which the employee completes prior to the consultation. It is a record of their previous employment, personal information and relevant medical history. The questionnaire helps the Audiologist to identify any problems that can be discussed with the employee.

Introduction. The Audiologist will explain the aim of Health Surveillance as a check to ensure hearing protection measures are effective and give instruction for the test procedure.

Aural Examinations - Binaural otoscopic examination of the ear and the Tympanic membrane (the eardrum). Is carried out, to detect any abnormality or the presence of wax.

Advice regarding test results. The Audiologist will discuss the test results with the Employee. An advice slip will be given if the hearing is outside normal limits or if a medical condition suggests referral to the GP. The Audiologist will also advise on the fitting, hygiene and maintenance of hearing protection and the importance of wearing it to protect their hearing from high levels of noise exposure.

Testing Procedure

  • All employees to be noise free for 15 minutes prior testing
  • All employees to complete Medical Questionnaire
  • Otoscopic examination of the ear, any abnormality referred to G.P.
  • Any employee falling below average hearing to be informed with written information and a copy to be attached to audiogram.
  • Any employee with excessive wax to be referred to there G.P. for removal and tested again on next available date

Testing Equipment

  • Pure Air Tone manual testing with masking and bone conduction
  • Testing equipment Audiometer
  • With noise reducing audio cups

Testing will be carried out in a 16ft Purpose Built Mobile Unit with a waiting area, a consulting room and a Sound Proof Booth supplied by Noise Control Systems that meets all current regulations.

Noise level reading will be taken and recorded at the start and end of every session - Four sessions. A Quest Type 2 Sound Level Meter will be used. Any readings above 44 dB test would be suspended until the readings were lower.

Health & Safety Guidance

Surveillance for employees means

  • Regular hearing checks in controlled conditions to measure the sensitivity of hearing over a range of sound frequencies.
  • Informing them about the results of their hearing checks
  • Keeping records
  • Encouraging them to seek further advice for a doctor where hearing damage is suspected

How to decide when it is needed.

High levels of noise at work can cause hearing loss. It can take many years to become serious. The young can be damaged as easily as the old.

Once ears have been damaged by noise there is no cure. High pitched sounds are most affected so everything sounds muffled. Noise can be a problem in many different types of job. There might be a problem in your workplace if...

Surveillance for employees means

  • You have to shout to be heard by someone two metres away
  • Your ears are still ringing after leaving the workplace.
  • People use tools causing loud explosives noises such as cartridge operated tool or guns

Advice to Employers

When arranging hearing checks you should consider:

  • The competence of the person in charge of the programme. The should understand the technical and medical aspects of carrying out checks and be aware of relevant International Standards. They are responsible for consistent testing, record keeping and for referring individuals for further medical opinion.
  • The competence of the technician carrying out the tests. The person should have had appropriate training to test consistently and accurately.
  • Frequency of testing. The best programme would begin with a baseline audiogram - the print out - giving details of the condition of an individual's hearing etc. - before exposure to noise (although a programme can be introduced effectively at any time for employees already exposed to noise). This is followed by a regular series of audiograms, usually annually for the first two years of employment and then a three-yearly intervals (although this may alter where an abnormality is detected or where the risk of hearing damage is high). You may of course decide to continue annual checks to give you more information about how well your hearing conservation programme is working and whether the advice you have given to employees about noise affected their attitudes and behaviour.
DhwaniAurica fm system
DhwaniAurica fm system DhwaniAurica fm system
DhwaniAurica 1101
Dhwani 1101
DhwaniAurica fm system 1101

Dhwani 1101

Dhwani 1101, System from Dhwani Aurica Pvt. Ltd. is a powerful Loop Induction System for use of hearing impaired. Microphone or CD signals are amplified and radiated through a wire loop. This radiation can be picked up by T-coils hearing aids.

Input : Microphone inputs CD (Stereo) inputs

Output : 1. Loop induction output through a wire loop, suitable for pick up by T coil of hearing aid. Loop output level can be varied. 2. Head phone output for monitoring purpose.

Digital Outputs dB Level controls : 2up/down Keys for each channel

Digital Scale Control : 2 x Setting Keys for both Microphone & CD inputs

Display : 16x2 LCD showing : dB level Scale settings for Microphones & CD inputs Bar Graph for output of dB level

Power Supply : 9 V DC 3 Amps

Mechanical Dimensions : 185(W) x 150(D) x 55(H) mm

Weight : 1KG

Dhwani 3101
DhwaniAurica fm system 3101

Dhwani 3101

Dhwani 3101, Speech Trainer from Dhwani Aurica Pvt. helps speech traing of hearing impaired children. Dhwani 3101 provides independent microphones to teacher and students. Speech signals of teacher & students are internally mixed and fed to a stereo headphones. Thus the student can simultaneously hear teacher''s and her/his own voice.

Input : 2 x Microphones inputs for Teacher & Student 1x CD (Stereo) input

Output : Headphones (Stereo) output for student

Tone controls : Independent tone controls of High-Normal-Low for each channel

Channel Selection : Left(L) only Right(R) Left & Right (L+R)

Digital outputs dB Level Controls : 4 up/down Keys for each channel

Digital Scale Cotrol : 2 x Setting Keys for both Microphones & CD inputs

Display : 16x2 LCD showing : dB levels of outputs, Scale settings for Microphones &CD inputs Bar Graph for dB levels both channels

Power Supply : 9 V DC 2 Amps

Mechanical Dimension : 220(W) x 150(D) x 45(H) mm

Weight : 1.5 kg

Dhwani 2102
DhwaniAurica 2102

Dhwani 2102

Dhwani 2102, Group Hearing System Dhwani Aurica Pvt. Ltd. enables hearing impaired students to study together with students having normal hearing.

The System consist of one of Teacher's Mic Amplifier Unit and 8 to 12 Students Headphone + Mic Amplifier Units. All these are daisy chained such that teacher's voice together with all students's voices reaches all students headphones.

Teacher's Unit consists of: Microphone amplifier, Bar graph and power supply

Students's Units consists of : Left & Right channel headphone amplifiers, microphones amplifier, Power On-Off switch while Bar ghraph is optional. Student can not only adjust the teacher's voice level but also his/ her own voice level independent of teacher's voice level.

Operating power to all units is supplied from Teacher's unit. If a student is not present, his/her unit can be switched off.


Headphone Output (Student's Unit) 500 mW / 8 Ohms

Headphone Impedance 8 Ohms

Operating Power 230 V +/-20%, 50-60 Hz

Dimensions/Weight-Teacher's Unit 170 x 115 x 65 mm/1.2Kg

Dimensions/Weight-Teacher's Unit 130 x 115 x 55 mm/0.3Kg (W x D x H)

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