RESEARCH DEPARTMENT
ALL INDIA RADIO & DOORDARSHAN

Revenue Generation

During the year 2018-19, acoustic material provided by the various firms have been tested in Acoustic Lab and revenue total amount of Rs 342672/- has been earned . Further the acoustic material received for testing is under progress.

Acoustic Test Facilities available:

    In Laboratory
  • Noise Reduction Coefficient (NRC).
  • Sound Transmission Class (STC)/Sound Reduction Index (Rw).
  • Sound Absorption Coefficient (SAC).
  • Impact Insulation Class (IIC).
  • On site Measurement
  • Sound Level measurement
  • Reverberation Time
  • Ambient Noise
  • Sound Transmission Class
  • Impact Insulation

Tests on Electro-Acoustic Transducers:

In Anechoic Chamber
    Microphone Testing
  • Sensitivity.
  • Frequency Response.
  • Polar Pattern.
  • Loudspeaker Testing
  • Sensitivity.
  • Frequency Response.
  • Polar Pattern.

NRC Report


STC Report

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Last Updated on 23/04/2019