Stephen P. Tarzia: computer systems engineer

welcome!

Stephen Tarzia

You have reached Stephen P. Tarzia's web space. I am General Manager of Secret Square, a mobile messaging product of Vaporstream, Inc.

Before graduating in August 2011, I was a Ph.D. student at Northwestern University in the Electrical Engineering and Computer Science department. My advisor was Professor Peter Dinda, and I worked on mobile systems, with an emphasis on acoustic sensing. My other interests include music technology, operating systems, electronics design automation, optimization algorithms, Internet telephony, embedded systems, architectural acoustics and high-performance computing.

My graduate work was funded by Northwestern University through various fellowships and through my advisors' National Science Foundation grants.

news

2014/2/20

RT @alexshye: Amazing that Whatsapp got to such scale charging users. People aren't used to paying for stuff built on the Internet.. not ev…

2014/1/27

RT @thedailynu: A Northwestern alumnus created a Snapchat-like app called Secret Square: t.co/xG7b5PVFM2

2014/1/18

@SecretSquareApp v1.0 is finally released! I explain a bit about what it is in this blog post: t.co/tCk5HGDHVa

2013/12/12

Windy day at the office. Building is swaying noticeably. t.co/cgo7hXEMbM

2013/11/12

I'm hiring a marketing intern for Jan 2014. Looking for someone passionate about privacy and mobile messaging. t.co/I7GYLJirTa

2013/10/30

Thanks @ReflectorApp @AdobeAE @AdobePremiere for allowing even amateurs like me to produce beautiful app demo videos t.co/yRaFEf3tk7

2013/10/11

A superb hardware + photo project from an NU prof to make lecture videos: t.co/dB05SXj96r

2013/9/30

Updated ClapIR to work on iOS7 plus added Spanish & German language localizations. Mögen Sie Schallleistungspegel? t.co/lnuA7xT2UT

2013/8/17

I released Badminton Footwork Trainer version 2.3. Y'all keep working those feet. t.co/bZMnVorIgt

2013/7/13

Saw a window washer rappel past my 97th floor @Vaporstream office window. I'm not any kind of "ninja". He is. t.co/vstcmojEwo

2013/6/20

Why we develop *native* mobile apps: t.co/fBz6qcU4Rt

2013/5/29

RT @VaporStream: Vaporstream engineers in turbo mode: t.co/o5iCTI7unh

2013/5/15

I finally posted our old Batphone demo video on youtube. It's indoor localization without infrastructure, 2011 style. t.co/GsRujCdPmm

2013/4/15

I released Badminton Footwork Trainer v2.2 to iTunes. Enjoy! t.co/ZtxNNhvDjD t.co/AfSTgUJlX0 t.co/pM5ezWAkxp

2013/01/04

Badminton Footwork Trainer version 2.0 for iPhone was and iPad was released on the iTunes store. This is an open-source project

2012/06/04

Badminton Footwork Trainer for iPhone was released on the iTunes store. This is an open-source project

2012/04/26

ClapIR Acoustics Measurement app for iPhone was released on the iTunes store. This is an open-source project

2012/04/25

Prem presented our acoustics research at the AES Convention in Budapest.

2011/12/14

The VaporStream iPhone app is available in the iTunes store! Writing this app was my first responsibility at VaporStream, and I'm pleased with how it turned out.

2011/09/06

I began work as an iPhone software engineer at an exciting Chicago startup called VaporStream.

2011/07/25

I successfully defended my PhD thesis "Acoustic Sensing of Location and User Presence on Mobile Computers." :)

2011/06/30

MobiSys’11 conference talk [paper] [slides]

2011/06/29

Batphone app version 1.2 released on the iTunes store.

2011/06/23

Added a room identification listening test.

2011/03/08

Our paper Indoor Localization Without Infrastructure Using the Acoustic Background Spectrum will be presented at MobiSys’11 in June.

2011/01/27

Batphone app version 1.1 released on the iTunes store.

2010/11/30

Batphone app version 1.0 released on the iTunes store.

2010/10/21

My computer Cosmos has it’s 15 minutes of fame at OOPSLA’10.

2010/06/08

ICAC’10 conference talk [paper] [slides]

2010/03/08

Our paper Display Power Management Policies in Practice will be presented at ICAC’10 in June.

2010/03/05

Check out the Sonar Power Manager video at Tinkernut blog or on Youtube.

2009/10/28

Sonar Power Manager version 0.8 released.

2009/10/15

Sonar Power Manager featured on slashdot.org tech news site.

2009/10/02

UbiComp’09 conference talk [paper] [slides]

2009/10/01

USENIX’09 Annual Technical Conference summaries published. I wrote several of these summaries.

2009/09/24

First public release of Sonar Power Manager, version 0.7.

2009/06/17

Presented Sonar poster at USENIX’09 Annual Technical Conference in San Diego.

2009/04/05

Updated remotecmd code for newer kernels.