[AUDITORY] loudspeaker phase response (microsoft exchange )


Subject: [AUDITORY] loudspeaker phase response
From:    microsoft exchange  <a.fourcin@xxxxxxxx>
Date:    Fri, 10 Mar 2017 06:42:19 +0000
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

--Apple-Mail-B4F72F3D-34C1-4CDE-A776-FA2419E84436 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable A close copy of the BBC's LS3/5A was produced commercially by Goodmans Louds= peakers Ltd. as the "MAMBO". It has the useful feature of being capable of g= iving an output acoustic pressure waveform that, for speech, corresponds to t= he input voltage waveform. These loudspeakers can still be found for sale on= the web. Good luck, Adrian On 9 Mar 2017, at 05:52, valluri rao <vvrmrao@xxxxxxxx> wrote: Another superb mini monitor is the KEF LS50 which is a modern version of the= classic BBC mini monitor - the LS35A. They are coaxial and are well regar= ded by the BBC for their outstanding speech accuracy as was the LS35A in the= past. I have a pair of these at home for personal use. They are however a= bit pricey. In the US they run about $1200/ pair from Amazon and I think a= bout 800 Pounds in the UK. Thanks Bob Rao > On Wed, Mar 8, 2017 at 1:09 PM, Neil Waterman <neil.waterman@xxxxxxxx>= wrote: > Given the distance, listener to speaker, anything other then a single driv= er (coaxial would be my suggestion) would probably not be a good idea. >=20 > I have no idea of your budget, but the Equator Audio D5 is a very fine nea= r-field monitor class coaxial driver loudspeaker. I believe they are only so= ld in pairs and retail for $499 here in the USA. >=20 > Good luck! >=20 > - Neil Waterman=20 >=20 >> On Mar 7, 2017, at 5:26 PM, Chait, Maria <m.chait@xxxxxxxx> wrote: >>=20 >> Dear Colleagues, >> So far we have been conducting our behavioural experiments using high qua= lity headphones, but for various reasons will need to shift to using free fi= eld sound presentation for some of our work. I was hoping you might be able= to recommend a high quality loud speaker to use for this purpose; Ideally, o= ne that we can purchase easily from the UK. >> =20 >> Our requirements: Experiments are conducted in a small-ish sound-proof b= ooth, and we plan to position a single loudspeaker about 50-70 cm in front o= f the listener (space constraints prevents this from being any further away)= . Stimuli are spectrally rich =E2=80=98soundscapes=E2=80=99. =20 >> My understanding is that we should prefer single cone speakers? >> =20 >> Many thanks, >> Maria >> =20 >> =20 >> Maria Chait PhD >> m.chait@xxxxxxxx >> Reader in Auditory Cognitive Neuroscience=20 >> Lab site: http://www.ucl.ac.uk/ear/research/chaitlab/ >> UCL Ear Institute >> 332 Gray's Inn Road >> London WC1X 8EE >=20 --Apple-Mail-B4F72F3D-34C1-4CDE-A776-FA2419E84436 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></div><div>A close copy of the BBC's L= S3/5A was produced commercially by Goodmans Loudspeakers Ltd. as the "MAMBO"= . &nbsp;It has the useful feature of being capable of giving an output acous= tic pressure waveform that, for speech, corresponds to the input voltage wav= eform. These loudspeakers can still be found for sale on the web.</div><div>= Good luck,</div><div>Adrian</div><div><br>On 9 Mar 2017, at 05:52, valluri r= ao &lt;<a href=3D"mailto:vvrmrao@xxxxxxxx">vvrmrao@xxxxxxxx</a>&gt; wrote:= <br><br></div><div><meta http-equiv=3D"Content-Type" content=3D"text/html; c= harset=3Dutf-8"><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-= size:large">Another superb mini monitor is the KEF LS50 which is a modern ve= rsion of the classic BBC mini monitor - the LS35A.&nbsp;&nbsp; They are coax= ial and are well regarded by the BBC for their outstanding speech accuracy a= s was the LS35A in the past.&nbsp; I have a pair of these at home for person= al use.&nbsp; They are however a bit pricey.&nbsp; In the US they run about $= 1200/ pair from Amazon and I think about 800 Pounds in the UK.<br><br></div>= <div class=3D"gmail_default" style=3D"font-size:large">Thanks<br></div><div c= lass=3D"gmail_default" style=3D"font-size:large">Bob Rao<br></div></div><div= class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, Mar 8, 2017 at= 1:09 PM, Neil Waterman <span dir=3D"ltr">&lt;<a href=3D"mailto:neil.waterma= n@xxxxxxxx" target=3D"_blank">neil.waterman@xxxxxxxx</a>&gt;</span> w= rote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border= -left:1px #ccc solid;padding-left:1ex"><div style=3D"word-wrap:break-word">G= iven the distance, listener to speaker, anything other then a single driver (= coaxial would be my suggestion) would probably not be a good idea.<div><br><= /div><div>I have no idea of your budget, but the Equator Audio D5 is a very f= ine near-field monitor class coaxial driver loudspeaker. I believe they are o= nly sold in pairs and retail for $499 here in the USA.</div><div><br></div><= div>Good luck!</div><span class=3D"HOEnZb"><font color=3D"#888888"><div><br>= </div><div>- Neil Waterman&nbsp;</div></font></span><span class=3D""><div><b= r><div><blockquote type=3D"cite"><div>On Mar 7, 2017, at 5:26 PM, Chait, Mar= ia &lt;<a href=3D"mailto:m.chait@xxxxxxxx" target=3D"_blank">m.chait@xxxxxxxx= .UK</a>&gt; wrote:</div><br class=3D"m_-245592462525050205Apple-interchange-= newline"><div><div class=3D"m_-245592462525050205WordSection1" style=3D"font= -family:Helvetica;font-size:14px;font-style:normal;font-variant-caps:normal;= font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;te= xt-transform:none;white-space:normal;word-spacing:0px"><div style=3D"margin:= 0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Dear Colleag= ues,<u></u><u></u></div><div style=3D"margin:0cm 0cm 0.0001pt;font-size:11pt= ;font-family:Calibri,sans-serif">So far we have been conducting our behaviou= ral experiments using high quality headphones, but for various reasons will n= eed to shift to using free field sound presentation for some of our work.&nb= sp; I was hoping you might be able to recommend a high quality loud speaker t= o use for this purpose; Ideally, one that we can purchase easily from the UK= .<u></u><u></u></div><div style=3D"margin:0cm 0cm 0.0001pt;font-size:11pt;fo= nt-family:Calibri,sans-serif"><u></u>&nbsp;<u></u></div><div style=3D"margin= :0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Our require= ments: &nbsp;Experiments are conducted in a small-ish sound-proof booth, and= we plan to position a single loudspeaker about 50-70 cm in front of the lis= tener (space constraints prevents this from being any further away). Stimuli= are spectrally rich =E2=80=98soundscapes=E2=80=99. &nbsp;<u></u><u></u></di= v><div style=3D"margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri,s= ans-serif">My understanding is that we should prefer single cone speakers?<u= ></u><u></u></div><div style=3D"margin:0cm 0cm 0.0001pt;font-size:11pt;font-= family:Calibri,sans-serif"><u></u>&nbsp;<u></u></div><div style=3D"margin:0c= m 0cm 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Many thanks,<u= ></u><u></u></div><div style=3D"margin:0cm 0cm 0.0001pt;font-size:11pt;font-= family:Calibri,sans-serif">Maria<u></u><u></u></div><div style=3D"margin:0cm= 0cm 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u>&nbsp;<u= ></u></div><div style=3D"margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:= Calibri,sans-serif"><u></u>&nbsp;<u></u></div><div style=3D"margin:0cm 0cm 0= .0001pt;font-size:11pt;font-family:Calibri,sans-serif">Maria Chait PhD<u></u= ><u></u></div><div style=3D"margin:0cm 0cm 0.0001pt;font-size:11pt;font-fami= ly:Calibri,sans-serif"><a href=3D"mailto:m.chait@xxxxxxxx" style=3D"color:p= urple;text-decoration:underline" target=3D"_blank"><span style=3D"color:blue= ">m.chait@xxxxxxxx</span></a><u></u><u></u></div><div style=3D"margin:0cm 0= cm 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Reader in Auditor= y Cognitive Neuroscience<span class=3D"m_-245592462525050205Apple-converted-= space">&nbsp;</span><u></u><u></u></div><div style=3D"margin:0cm 0cm 0.0001p= t;font-size:11pt;font-family:Calibri,sans-serif">Lab site:&nbsp;<a href=3D"h= ttp://www.ucl.ac.uk/ear/research/chaitlab/" style=3D"color:purple;text-decor= ation:underline" target=3D"_blank"><span style=3D"color:blue">http://www.ucl= .ac.uk/<wbr>ear/research/chaitlab/</span></a><u></u><u></u></div><div style=3D= "margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">UCL E= ar Institute<u></u><u></u></div><div style=3D"margin:0cm 0cm 0.0001pt;font-s= ize:11pt;font-family:Calibri,sans-serif">332 Gray's Inn Road<u></u><u></u></= div><div style=3D"margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri= ,sans-serif">London WC1X 8EE</div></div></div></blockquote></div><br></div><= /span></div></blockquote></div><br></div> </div></body></html>= --Apple-Mail-B4F72F3D-34C1-4CDE-A776-FA2419E84436--


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