The goal in a Hi-End Hi-Fi Listening Room acoustic design is to provide the audience a neutral acoustic environment, in order to assure a clear and complete audio experience without distortions. The listener should be able to clearly hear the film or music, with minimum influence from external sources such as room’s acoustics, noise from playing systems, or noise from sources located in adjacent spaces.
Why Aural Exchange?
Our experience in designing and building Dolby Atmos Premier certified recording studios as well as TV channel broadcast studios is what makes us the best in the country – these studios represent the pinnacle of cinematic acoustic design because that’s where high-end Atmos movie soundtracks are produced and mixed. Dolby’s studio certification process is considered the most difficult in the world – follow this link to see the requirements. Most acoustic consultants in India do not have true broadcast grade experience, and rely on opinion based consulting. Our consulting practice is not based on Youtube videos and hifi forums, but is instead a more fundamental approach towards acoustical design and best practices.
Aural Exchange makes technical specifications and designs for acoustically optimised listening rooms. The company makes intensive use of computer technology. Even preliminary look and feel sketches prepared for homeowner input are based on 3D AutoCAD models that have been photo-realistically rendered and then post-processed to impart more of an artistic impression
Aural Exchange works collaboratively with the architects, builders, audio/video installers and homeowners involved in a project to achieve world-class results.
Basics of Listening Room Acoustic Design Consulting
- Small rooms such as Hi-Fi rooms normally have poor acoustic response at low frequencies due to room modes.
- Low frequency response of your Hi-Fi room may be enhanced by including Bass Trap solutions in the corners of your rooms where high sound pressure fluctuations are located.
- Generally our designs allow you to tame and control low frequencies from as low as 60 Hz, with an optional tuned bass trap system going down to 30Hz
- • By including bass trap solutions one will have much more definition and clarity when listening to music with low frequency contents
First Reflections Control
First Lateral Reflections may influence the stereo image (by shifting or broadening it) and the perception of spaciousness within your Hi-Fi room. This will strongly determine the enjoyment you will have when listening to your Hi-Fi system.
- Different listeners will judge the importance of first lateral reflections differently. While some prefer to have some energy coming from first lateral reflections and in this way increase the sense of spaciousness, others prefer to hear the ambiance and reverb contained in the recordings with minimum room influence.
- These preferences may even change with the type of music one is listening. e.g. For classical music with acoustic instruments and slow rhythmic tempos, it may be more pleasant to have some energy coming from the sides to increase the sense of spaciousness and feel more involved with music. On the other hand, when listening to contemporary popular music with electronic instruments / effects and faster tempos, energy coming from the sides may compromise music definition. Your listening preferences decide how to tackle first reflections
- We usually present two ways to treat first lateral reflections. One where mainly sound absorbers are used and another where mainly sound diffusers are used.
Reverberation Time Optimization
Reverberation Time (RT) is one of the main room acoustic aspects the human ear is able to perceive.
- The perception of reverberation is given by the multiple late reflections that arrive at the listener’s ears.
- RT may influence spaciousness and signal perception/definition.
- A Hi-Fi room should neither be very live (with huge reverberation) nor too dead (with lack of reverberation).
- Optimum RT for Hi-Fi rooms should be within 0,4 s to 0,7 s.
- In addition, RT should maintain steady and continuous in the frequency range between 250 Hz and 4 kHz, avoiding compromising spectral content of the original music signal.
- RT optimisation can use both sound absorption and diffusing panels.
- Flutter Echoes are repeated sound reflections caused by sound waves travelling between parallel reflective surfaces, such as walls, floor and ceiling.
- It should be noted that by treating first reflections and reverberation time one is already dealing with flutter echoes issues.
This includes outdoor environmental noise, impact and transient noise such as door slamming and footsteps; broadband noise such as that generated by a HVAC system; and low-noise such as electrical buzzing from components, all contribute to the degradation of the entertainment and critical listening experience.
Taking into account the room’s structural design, architectural features, and HVAC and electrical installations, specifications are made regarding acoustic treatment (use of absorbers, diffusors, reflective material, etc.) and specific installations. The psychoacoustic properties of the finished listening room are also considered. Rather than focus on the traditional approach of “money seats” we try to ensure that every seat has the same listening experience for optimal enjoyment
- Soundproofing & Isolation Specifications – STL & STC (Rw) confirming to ISO 16283-1:2014 measurement standard with simulation and analysis of sound transmission loss.
- Acoustic treatment recommendations specifically chosen to enhance the sound of your room (and look great on your walls). We will find an optimal balance of value, aesthetics and high performance to meet your goals.
- Room acoustics simulation and analysis showing your reverberation times (RT60) before and after treatment, so you can see how your sound will improve.
- Working Drawings – Elevations and floor plan, plus layer by layer sectional details including joinery details. Our drawings are self explanatory easily understood by contractors & carpenters
- Remote Build support – We offer upto 2 hours of direct phone, Skype, and Google Hangouts support to you and your build team during the studio build process to assist with doubts, problems, and bottlenecks