Thursday, 4 April 2019

Case study: soundproof doors and windows to isolate DJ sound in Delhi

Since 6 years, I am writing over this social platform with my limited knowledge about door & window systems. I try to share new learning in simplified manner. This particular project, I did in 2013 but did not share over here as would like to see results over period of time. In my industry, patience is the key. Our product life cycle is too long in comparison to rapidly changing world around us. Years we treat like a months, Months like hours... When someone invite me for professional consultation as well as to make optimal choice, deep down , I know that the customer's choice of uPVC or, Aluminium Door/window is going to last for min. 15-20 years. Sometimes people make a choice based on low cost as for them " it is just a frame and glass."  Well, both frame and glass of a modern window differ drastically from their ancestors. It can protect you against unwanted sound, dust & rain & does not require any maintenance for life long. Some uPVC & aluminium window manufacturers are still using product where the contents are not met as per international standards. Such window cost cheap and at first sight do not differ from their more expensive analogues. But it is just matter of time. In a few years the Indian climate with its parching summer sun, severe winter and sudden temperature fluctuation will do its job.

In this particular situation, Mr. Girja shankar was making a sound studio near GK II, Delhi. His concern was low pitch sound in between room. Being an expert in acoustics- He knew basics of sound. ( Pl check my following article to learn basics of Sound)

In brief, The movement of sound through air can be likened to waves on the surface of water.

Higher the frequency, more high-pitched the sound

Generally when we do soundproofing, we try to bring outside noise level as per following international regulation for acoustic comfort

Acoustic comfort required as per International standards

Here we had a different situation as we need to create pin drop silence inside the recording or, "live room". In reality sound is not only acoustic pressure & repeated frequency but made up of super imposed on each other creating a sound spectrum containing all frequency.

Depiction of sound spectra measurement 

Apparatus for sound spectra measurement

Sound spectrum

The sound spectrum provides full details of the acoustic performance required & achieved. It is almost 6 year, Mr. shankar & the Depot Records (Pl check link to see sound studio over Google maps & check reviews) is also one of our satisfied customers. 

Definitely few articles on such a complex topic can not cover all the aspects and describe all the important details. Specialists who work with me will be glad to visit your place and give you a professional consultation as well as help you to make the optimal choice. 



  1. As experts on acoustical solutions for contractors, we know how much value soundproofing can add to a property. For families with high-energy kids or neighborhoods near high-traffic thruways, soundproofing can drastically improve anybody’s quality of life. Need more home improvement tips, visit our website today!

  2. Memphis Brick Mason is known for the ability to deliver consistently high quality results in all these widely diverse disciplines. If you needed any of those services, visit and tell them details.

  3. Most states require plumbers to be licensed. Many state government websites allow local homeowners to search an online database of professional license holders.

  4. If you find that the roof they installed for a client previously is failing within five years of installation, be sure to steer clear of that contractor. Beware of inferior products and poor execution. Ocala roofing company

  5. Nowadays if furniture vendors want to keep their sales going they need to reduce their selling prices. There is so much competition out there for your dollar that it's a must to attract more customers. Having said that, discount or cheap furniture does not necessarily mean quality is being compromised. sliding glass doors

  6. Great Post! Thanks for your Share.

    Qualityonesie offers Pikachu, Disney, Anime, Hello Kitty, Animals, Winnie the Pooh, Stitch, Unicorn Kigurumi Onesie Pajamas for Adults and Kids.

  7. Every new conservatory roof we install is a bespoke built system designed to make the most of your new home improvement, available with LED lighting, Velux Roof Windows and more. warm roof conservatory