Re: Wireless Audio for Research

I would agree with Dimitris on this. My preference would be to have a separate machine wired to the audio system, and the tablet acts as a mere controller or interface, connected via WiFi. This should be possible on most platforms, using basic OSC protocol to a machine running Max or PD, or just a remote desktop interface.

If there needs to be some processing on the tablet, one approach we have used for telepresence/remote sensing is to send the audio via WiFi network to the remote machine connected to the audio hardware. We used the netsend~ project which functions well under Win and OSX in Max and PD. You can stream the raw audio, or there are compression options, which I think include flac. The code is available for modifications…

One key issue is the importance of latency in your experiment. Using the tablet as a remote controller would I think induce the lease latency, relative to these wireless audio streaming solutions.

Just my 2 cents.

-Brian

Brian FG Katz, Ph.D, HDR

Audio & Acoustique

LIMSI-CNRS

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De : AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxxxxxxxxx] De la part de Dimitris Kosmidis
Envoyé : dimanche 7 décembre 2014 09:05
À : AUDITORY@xxxxxxxxxxxxxxx
Objet : Re: Wireless Audio for Research

Hi David,

I don't have experience with streaming audio wirelessly. But in case you want to avoid any problems altogether you could try having a device wired to the loudspeakers outputting sound, and a remote interface (e.g. your tablet) controlling the first device.

Regards,

Dimitris

On Sat, Dec 6, 2014 at 7:43 PM, Landsberger, David <David.Landsberger@xxxxxxxxx> wrote:

Hi All,

I was wondering if anyone had thoughts about wireless audio connections
for research. We are running our spectral resolution task (SMRT;
smrt.tigerspeech.com) on a small windows 8.1 tablet. It would be nice
for the audio to be transferred wireless to the speakers. I am
considered about degrading the signal quality.

Any suggestions on how to do this without adding signal noise or lossy
data compression? I understand bluetooth is not acceptable. What
about using airplay, miracast, or chromecast? Has anyone had luck /
experience with these technologies for wireless PC audio streaming of
quality acceptable for psychoacoustic research?

Thanks,
David

--
David Landsberger, Ph.D.
Assistant Professor
Department of Otolaryngology
NYU School of Medicine
550 1st Avenue NBV 5E5
New York, NY 10016