Interview with Eric de Santis - Founding Director of BAP Acoustics

Today’s post features a summary of an interview with one of Vancouver’s BAP Acoustics founding directors, Eric de Santis. BAP Acoustics is an independent firm that provides options and advices in dealing with acoustics for internal and external environment. You can find some of their projects here. Eric’s primary focus is external environmental assessment. He works closely with his partner, Mark Gaudet, whose work specializes primarily in architectural acoustics. Other works by BAP Acoustics include computer noise modeling and noise prediction. During the interview, Eric gave various pointers on understanding acoustics in commercial settings. Eric emphasizes that the type of solutions varies on the function and desired character of the space. The character of the space could be live or dead, depending on the amount of sound absorptive materials and number of occupants within the space. For a lecture hall where speech clarity is important, Eric suggests the space to have a low reverberation time1.

For applications similar to offices, where speech privacy is a factor, Eric suggests looking into the construction of wall and door types and how they are sealed. He also mentions a sound masking system that artificially raises ambient noise level in order to provide better speech privacy.  These can be installed as speakers in plenum, ceiling tile, or in ground.

If you are looking to seek advice from an acoustic consultant, Eric recommends hiring a qualified engineer who is a registered Professional Engineer. They are trained to provide advices to their clients within their professional background and specialty, as opposed to selling products. Utilizing an acoustic consulting service early in the design phase can better predict and prevent noise issues from happening along the way.

1Reverberation time is a measurement of the echo within a space.

Sound is Alive At the Orpheum Annex

I had the opportunity to perform at the Orpheum Annex today and this experience allowed me to share with you some behind-the-scenes observations of performance hall design. annex-from-top-of-stairs_rdax_1000x667         annex-from-catwalk_rdax_1000x667

This performance and rehearsal space is connected to the Vancouver Symphony of Orchestra School of Music. The theatrical design and consulting was done by DWD Theatre Design and Consulting. The space is decorated with red and black draperies that are interchangeable. The sound in this space is extremely alive, capturing the pitch and tone of every note extremely well. Other features of this space include adaptable theatrical/performance lighting and retractable seating.

Here are some of the things I observed from the design:

  • Flooring is absorbent and offers sound reduction – it appears to be vinyl or laminate with sound absorbency substrate. This is great for performers wearing heels as they walk on and off stage - the sound does not carry through as the sound of an instrument would. It is also durable. However, the adjacent performance space, Pyatt Hall utilizes wood flooring. You can learn more about different flooring materials and sound reduction here.
  • Backstage and front entry to the space has vestibule for noise elimination.
  • Backstage has a TV monitor showing the stage live. This is useful for backstage crew for cues.
  • Backstage dressing room is equipped with a washroom with shower.
  • Performance halls connect to the same backstage. There is a food preparation area connected.

According to Accordions

Inspiration may come from many forms. Design can be inspired by art, literature, emotion, research, nature, functionality, and the list may go on. The distinct appearance of the accordion is one that has inspired design from the grilles. Accordion_stretched_by_Rellim

This Accordion Cabinet designed by Elisa Strozyk and artist Sebastian Neeb, featured the repeated lines and form of the accordion to create a sculptural form. This cabinet has interior shelving that is accessible by sliding the veneer wood around the perimeter of the piece. The rhythm coming from the repeated folds is lyrical. The sliding of open and close really mirrors the movement of the accordion while being played.

Classic-Shape-of-Accordion-Cabinet-Design-by-Elisa-SebastianMusic-Instrument-Inspired-Design-of-Accordion-Cabinet-by-Elisa-Sebastian          

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Another notable piece inspired by the accordion is the Homework Table by Nika Zupanc. Turning a handle reveals storage. The sleek design keeps your documents and desk organized and clutter free.

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To celebrate this folk instrument, here is a Russian folk song performed with an accordion.

[youtube https://www.youtube.com/watch?v=5Dr0Q0VRmTA]

How to improve indoor sound quality

A significant factor when designing built environment is the acoustic level. Researchers at University of Salford Manchester have developed a project to analysis the effect of indoor sound quality on seniors. The result is that background noise significantly decreases the effectiveness of verbal communication, hence increasing frustration. Noise interference of TV, telephones, HVAC, etc affects quality of life. Here are some ways to reduce noise indoor:

  • Incorporate soft materials such as fabric, acoustic panels, carpet, and plants.

Rugs and carpet may come with sound absorbing padding. Cork is also great for sound absorption. Soft materials that are heavier in texture, such as velvet and wool, tend to have higher sound absorption.