Re: Wireless Audio for Research (Brian Katz )


Subject: Re: Wireless Audio for Research
From:    Brian Katz  <brian.katz@xxxxxxxx>
Date:    Mon, 8 Dec 2014 08:38:56 +0100
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

--Apple-Mail-EEAB9862-582E-4F0E-AAF6-BDEB590E7E49 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable This is regrettably not the case, as many wireless audio devices incorporate= hardware compression, reducing the quantity and quality if the information s= ent. They also often employ noise gates and may even employ level compressor= s to account for the more limited dynamic range of many wireless transducers= .=20 If in doubt, a simple measurement can be performed to test if this is the ca= se with a given setup, and I highly encourage you to do this before any expe= riment using such equipment.=20 -Brian FG Katz LIMSI-CNRS > On 7 d=C3=A9c. 2014, at 18:56, Jose Garcia-Uceda <J.Garcia@xxxxxxxx> w= rote: >=20 > Hi!! Since my poor knwodlege just I can say you that there are not degradi= ation at all. when you are using a wireless comunication you dont change th= e packets of the signal!! So, you receive exactly the same that you send. >=20 > Go a head, man! >=20 >=20 > Jose Garcia-Uceda > Phd Student at Donders Institute > Nederlands >=20 >=20 > Enviado de Samsung Mobile >=20 >=20 > -------- Mensaje original -------- > De: "Landsberger, David" > Fecha:06/12/2014 19:43 (GMT+01:00) > Para: AUDITORY@xxxxxxxx > Asunto: Wireless Audio for Research >=20 > Hi All, >=20 > 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. >=20 > 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? >=20 > Thanks, > David >=20 > --=20 > David Landsberger, Ph.D. > Assistant Professor > Department of Otolaryngology > NYU School of Medicine > 550 1st Avenue NBV 5E5 > New York, NY 10016 >=20 --Apple-Mail-EEAB9862-582E-4F0E-AAF6-BDEB590E7E49 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D= utf-8"></head><body dir=3D"auto"><div>This is regrettably not the case, as m= any wireless audio devices incorporate hardware compression, reducing the qu= antity and quality if the information sent. They also often employ noise gat= es and may even employ level compressors to account for the more limited dyn= amic range of many wireless transducers.&nbsp;<br><br>If in doubt, a simple m= easurement can be performed to test if this is the case with a given setup, a= nd I highly encourage you to do this before any experiment using such equipm= ent.&nbsp;<br><br>-Brian FG Katz<div>LIMSI-CNRS</div><div><br></div></div><d= iv><br>On 7 d=C3=A9c. 2014, at 18:56, Jose Garcia-Uceda &lt;<a href=3D"mailt= o:J.Garcia@xxxxxxxx">J.Garcia@xxxxxxxx</a>&gt; wrote:<br><br></div= ><blockquote type=3D"cite"><div><meta http-equiv=3D"Content-Type" content=3D= "text/html; charset=3DUTF-8"><div>Hi!! Since my poor knwodlege just I can sa= y you that there are not degradiation at all. &nbsp;when you are using a wir= eless comunication you dont change the packets of the signal!! So, you recei= ve exactly the same that you send.</div><div><br></div><div>Go a head, man!<= /div><div><br></div><div><br></div><div>Jose Garcia-Uceda</div><div>Phd Stud= ent at Donders Institute</div><div>Nederlands</div><div><br></div><div><br><= /div><div><div style=3D"font-size:9px;color:#575757">Enviado de Samsung Mobi= le</div></div><br><br><div>-------- Mensaje original --------</div><div>De: "= Landsberger, David" <david.landsberger@xxxxxxxx> </david.landsberger@xxxxxxxx= org></div><div>Fecha:06/12/2014 19:43 (GMT+01:00) </div><div>Para: <a href= =3D"mailto:AUDITORY@xxxxxxxx">AUDITORY@xxxxxxxx</a> </div><div= >Asunto: Wireless Audio for Research </div><div><br></div>Hi All,<br><br>I w= as wondering if anyone had thoughts about wireless audio connections<br>for r= esearch.&nbsp; We are running our spectral resolution task (SMRT;<br><a href= =3D"http://smrt.tigerspeech.com">smrt.tigerspeech.com</a>) on a small window= s 8.1 tablet.&nbsp; It would be nice<br>for the audio to be transferred wire= less to the speakers.&nbsp; I am<br>considered about degrading the signal qu= ality.<br><br>Any suggestions on how to do this without adding signal noise o= r lossy<br>data compression?&nbsp; I understand bluetooth is not acceptable.= &nbsp; What<br>about&nbsp; using airplay, miracast, or chromecast?&nbsp; Has= anyone had luck /<br>experience with these technologies for wireless PC aud= io streaming of<br>quality acceptable for psychoacoustic research?<br><br>Th= anks,<br>David<br><br>-- <br>David Landsberger, Ph.D.<br>Assistant Professor= <br>Department of Otolaryngology<br>NYU School of Medicine<br>550 1st Avenue= NBV 5E5<br>New York, NY 10016<br><br></div></blockquote></body></html>= --Apple-Mail-EEAB9862-582E-4F0E-AAF6-BDEB590E7E49--


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