Posts Tagged ‘audio’

A new record

Putting a new spin on the long-playing vinyl record, an editor at Instructables has devised a new method for producing LP records using a rapid prototyping “3D printer”.  Working directly from a digital audio file, Amanda Ghassaei uses the waveform profile to create a 3D computer model of the familiar LP groove, which is then built up in physical form by a UV-cured resin printer.

Despite the cutting-edge 16-micron resolution of the printer, the end result is rather crude, with a frequency response and audio quality as yet far beneath a typical analog vinyl record.  The all-digital noise introduced by the discrete print (in time, aliasing, and in amplitude, quantization) is also harsh compared with the traditional “warm” analog distortion sought after by vinyl enthusiasts and audiophiles.  Even so, one could foresee a niche market for one-off, just-in-time pressing of records to keep alive long out-of-print material (or new material that might be in limited demand).  Even though this can be accomplished with .mp3 files or CD-R discs, sometimes there’s simply nothing like setting needle to vinyl!

[via Wired]

INTER-NOISE 2012 in NYC

This coming Sunday through Wednesday (August 19-22, 2012) brings INTER-NOISE 2012 to New York City, the 41st International Congress and Exposition on Noise Control Engineering.  We are excited to be presenting two of our favorite projects during the conference: our Subcat Music Studios project in Syracuse, and our contributions to an ongoing study of wind turbine noise in western New York State.

 

The theme of this year’s conference (the largest ever held!) is Quieting the World’s Cities, an especially relevant topic for a conference held in the heart of Times Square.  A free Community Noise Public Outreach workshop will be held on Wednesday 8/22 from 8:30 am – 1:45 pm at the Marriott Marquis, including presentations and discussion on the NYC Noise Control Code and noise in general as a community concern.  A top-notch panel of experts and officials has been assembled for this free workshop, and anyone with an interest in community noise (which should include almost anyone living in New York City) will find it enlightening!

219 West / Subcat Studios Wins 2012 AIANY Architecture Merit Award!

We were happy to be part of the team to bring this great project together…Congratulations to Fiedler Marciano Architecture!

AIANY Design Awards 2012

[Graphic: AIANY Chapter]

Interior Design Magazine is feeling ‘Good Vibrations’

SubCat Studios is in the new issue of Interior Design Magazine!  The studios are right next to a freight train and heavy traffic but with floated constructions, careful tuning of the interiors and close coordination with Fiedler Marciano Architecture, the studios sound and look great….If you would like to hear how it sounds, please check out the video on the homepage of SubCat Studios.

FFFFT (the fast fast fast Fourier transform)

No, it’s not the sound of the air being let out of your tires!

Researchers at the Massachusetts Institute of Technology have just published a ground-breaking computational method for analyzing digital signals, including sounds and images.

The Fourier Transform is a way to break a complicated signal down into its most basic components, and it’s how computers manipulate things like acoustic and visual information—everything from your jpeg and mp3 files up to complicated acoustic measurement and analysis gear that consultants like ourselves use daily.

Fourier Transform

The last major improvement in the efficiency of the Fourier Transform came in the 1960s, with the advent of the “Fast” Fourier Transform (often denoted FFT).  That was a long time ago, but the FFT is still the method of choice for on-the-fly number crunching in everything from cellphones to video games to high-end audio and graphics workstations.

The new algorithm that MIT has devised (a “nearly optimal sparse Fourier transform”) is substantially faster than the FFT for a large range of realistic and useful cases—up to 10 times faster.  It isn’t hard to imagine that such a major leap in efficiency will lead to smaller, cheaper, and more powerful electronics, since the work they do under the hood just got a whole lot easier!

[via MIT News. Graphic: Christine Daniloff]

Telecool

HEARING LOOP INSTALLEDThis week the New York Times brings a promising update on the increasing adoption of the telecoil, a technology that promises to make life much easier for those with hearing impairments.  A hearing aid or cochlear implant that includes a telecoil can directly pick up the audio from a sound system, whether for a theater or a school or even a subway booth clerk’s microphone.  The signal is beamed to the telecoil via an audio induction loop of wire permanently installed in the floor; when the listener’s hearing device is trained on this signal, it eliminates the extraneous background noise and reverberation that can make intelligible listening a challenge even with a modern hearing aid.  The listener has effectively “plugged in” directly into the source—and without the social stigma that can hinder adoption of more obtrusive external listening devices.

The concept has been around for decades and is widely adopted in parts of Europe—there is a telecoil transmitter in the back seat of every London taxi—but it is only recently gaining a foothold in the US.  With the greying of the population and the fact that more than 30% of people over the age of 65 are affected by hearing loss, the ability to make clean audio directly accessible to the ear holds “clear” potential!