[Sursound] buying advice for soundfield SPS422
Hi folks I've been offered a Soundfield SPS422 for a very good price but before I take the plunge I have a few questions. The preamp that comes with this model is an early version which doesn't have the b-format outputs built in. I'd like to know if it is possible to: 1: use a 12pin to XLR breakout and record the separate outputs directly from the mic using a motu traveller (which I already have), also, is it possible to power the mic from one of the travellers pres (phantom) or will I need to power the mic using a 5th XLR on the breakout? 2: would it be a relatively easy job to modify the soundfield preamp and fit the b-format outputs into the chassis? Thanks in advance Dan Andrews Registered Office: dB-AV Ltd Churchfields, The Street, Tendring, Essex, CO16 0BL +44 (0)7581 187488 <http://www.db-av.co.uk/> www.db-av.co.uk -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121006/7e7a3644/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] buying advice for soundfield SPS422
Dan, The original version of the SPS422 has the B-format signals available on the PCB but they are not buffered or available on an edge connector. I have modified an SPS422 in the way that you describe. If you'd like more info contact me off-list. Eric - Original Message From: Dan To: Surround Sound discussion group Sent: Sat, October 6, 2012 2:03:53 AM Subject: [Sursound] buying advice for soundfield SPS422 Hi folks I've been offered a Soundfield SPS422 for a very good price but before I take the plunge I have a few questions. The preamp that comes with this model is an early version which doesn't have the b-format outputs built in. I'd like to know if it is possible to: 1: use a 12pin to XLR breakout and record the separate outputs directly from the mic using a motu traveller (which I already have), also, is it possible to power the mic from one of the travellers pres (phantom) or will I need to power the mic using a 5th XLR on the breakout? 2: would it be a relatively easy job to modify the soundfield preamp and fit the b-format outputs into the chassis? Thanks in advance Dan Andrews Registered Office: dB-AV Ltd Churchfields, The Street, Tendring, Essex, CO16 0BL +44 (0)7581 187488 <http://www.db-av.co.uk/> www.db-av.co.uk -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121006/7e7a3644/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Take a Load off Intel (and put the Load on IC)
esearch/page_002.htm > elcaudio.com/research/page_003.htm > The room isn't my own, and my thanks go to Dr. William (Bill) Yost for > letting me use his research space. > I have an array of speakers at home, but data collected from a living room > hardly qualifies as "controlled" or scientific. This was why I was > wondering whether an Ambiophonic-Ambisonic hybrid system might be possible. > Ideally, I'd like to construct a system that is portable. Gobos and flats > may work, particularly if they are constructed of materials that provide > absorption across the speech spectrum of frequencies. Low-frequency > absorption via a gobo would be a more daunting task, though the right combo > of mass and compliance could yield a low Q absorber. Just ideas... and I > appreciate the plethora of wisdom others on this site have provided. In the > meantime, I continue to enjoy make Ambisonic field recordings solely for > the fun of it. My last recording was an attempt to record a bald eagle at a > nearby lake. Most of what I captured was an agitated squirrel and a flying > insect that found the mic's windscreen to be a good landing pad. Fun > effects! > Best, > Eric > -- next part -- > An HTML attachment was scrubbed... > URL: < > https://mail.music.vt.edu/mailman/private/sursound/attachments/20121005/880d9d73/attachment.html > > > ___ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound > -- 07580951119 augustine.leudar.com -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121006/253168d4/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] Dolby Atmos and Ambisonics
Hello, Have any list members replayed ambisonic recordings through a Dolby Atmos speaker array? If so, how did you find the results? Thanks, Rob Walker AMPS, MIPS www.robwalkersound.com -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121006/2467590e/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] Take a Load off Intel (and put the Load on Wii)
Hi Augustine, Many thanks for your suggestion. I had considered MaxMSP, but I'm not a seasoned user of it. The MIDI project I referenced is actually Arduino-based, and I've built a number of controllers using the Arduino boards. The down side of using a (RF) remote controller for my work is that some of the sound rooms employ steel walls--virtually Faraday shields--thus precluding RF reception. One workaround is to use a PIC chip to send multiple control signals along a single coax cable. My response boxes work this way: I don't have to use multi-conductor cables or multi-pin connectors to go through an audiometric test booth; yet, I can transmit and receive multiple signals (basic multiplexing via a microcontroller). I should really look more into MaxMSP--I have this as well as FlowStone, LabVIEW, and a number of related applications. For years, I've used NI LabVIEW because I'm comfortable with it. But I'm not aware of ASIO drivers that allow using most audio interfaces. Same goes for MATLAB--in my experience, you can only use two channels of any given sound card regardless of the card's channel count. I had built a hardware controller that integrates with most DAWs--and it interfaces with a MOTU 828 (or any audio device). It also uses a chip from a Microsoft mouse (easily recognized human interface using Mac or PC) to control Pause, Play, etc. functions. Discrete signals, not human operation, signal the mouse's functions. In the end, I had an automated stimuli presentation and data collection system (data was response time as well as perceived direction--the localization study appeared in Noise & Health). Furthermore, it allowed for a forced-choice test method. All of this could have been implemented with software, but I chose the tools that were available to me at the time. As my programming skills improve (along with my understanding of Ambisonics), I find new methods and tools needed to perform tasks. I very much appreciate your suggestions and will most likely make good use of them. Kind regards, Eric From: Augustine Leudar To: Eric Carmichel ; Surround Sound discussion group Sent: Saturday, October 6, 2012 2:43 AM Subject: Re: [Sursound] Take a Load off Intel (and put the Load on IC) I am not sure about the second part of your post. But with regards to the first half did you consider using max msp (or probably supercollider) ? you could control as many channels as you want with a computer and control them with almost anything from a wii controller via blue tooth to more or les anything with an aduino. On 6 October 2012 01:37, Eric Carmichel wrote: Ok, the subject title is a take on the Robbie Robertson/The Band/Dylan song The Weight (Take a load off Annie... and you can put the load right on me). So what does this have to do with sursound? Answer: Native processing (Intel) versus dedicated hardware control (via a collection of BB PGA2311 ICs). >One of my early concerns regarding research and Ambisonics had to do with >simultaneous control of 8 or more channels. I'm guessing (and it's really a >guess) that many Ambisonic Aficionados (AA?) use either a surround >preamp/receiver or the Master fader of a DAW--so long as the fader can provide >control for a 4-channel (or greater) buss. I don't like using a mouse-n-DAW >because this requires being at the computer. Surround controllers, on the >other hand, are generally limited in their number of channels or become >expensive. One solution to my 'dilemma' was to use a DAW surface controller. >The simplest implementation of this idea was an attempt to use a MIDI volume >controller to remotely control the Master fader. A kit available from >midikits.net23.net provided an easy to build and flexible solution. This is a >hardware device with a USB interface that serves to control the (software) >Master fader. Another solution, for anyone dealing with large channel > counts, is to use programmable gain amplifiers. This is probably what the >majority of modern surround receivers use. But by building my own preamp, I >achieved a large channel count by using serially-connected Burr Brown PGA2311 >ICs. A single rotary pulse encoder controls all channels, but now I have the >added benefit of software control. The software control has advantages when >automating data collection and stimuli presentation. Attempts of mixing DAQ >applications and DAWs via ReWire weren't so successful. The hybrid solution >works well. This brings me to my recent post regarding hyfi... (refer to >original post) > -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121006/b598b708/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] Trans-Dimensional Portal
Hi All, At present, no more details on this are available, but it looks like one to watch: http://mur.mu.rs/?p=560 Regards, Martin -- Martin J Leese E-mail: martin.leese stanfordalumni.org Web: http://members.tripod.com/martin_leese/ ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Dolby Atmos and Ambisonics
Hi Rob, I work at Dolby, although not on the Atmos team. Record acoustic music (mostly "classical") in the SF Bay area and have been running a SoundField mic in parallel for about a year now, gathering some conventional and some interesting recordings. I've had on my list to reach out to the Atmos team regarding the ability to render these to an Atmos system, and your post provoked me to take the subject up again. I don't think the Atmos renderer has an Ambisonic decoder in it, but one could probably be constructed that leverages the site map (speaker information) that drives the Atmos renderer. Will let you know what I learn. Michael >Message: 11 >Date: Sat, 6 Oct 2012 13:55:29 +0100 >From: Robert Walker >Subject: [Sursound] Dolby Atmos and Ambisonics >To: sursound@music.vt.edu >Message-ID: <0600f453-2637-42e2-bb32-4f8aa2d8e...@googlemail.com> >Content-Type: text/plain; charset="us-ascii" >Hello, >Have any list members replayed ambisonic recordings through a Dolby Atmos >speaker array? If so, how did you find the results? >Thanks, >Rob Walker AMPS, MIPS >www.robwalkersound.com -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121006/829213d2/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Trans-Dimensional Portal
On Sat, Oct 6, 2012 at 10:13 AM, Martin Leese wrote: > Hi All, > > At present, no more details on this are > available, but it looks like one to watch: > http://mur.mu.rs/?p=560 There's more info about this at https://www.facebook.com/TransDimensionalPortal -- Aaron (hel...@ai.sri.com) Menlo Park, CA US ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Hybrid Hi-Fi (HyFi?), IRs, etc.
Martin Leese wrote: > The Ambi-5 Auditorium Decoder. I have a > PDF of an Audio + Design leaflet which > somebody sent me. If people want it I can > place it on my Google Site for download. I have placed the 1.3 MByte file: Audio_Design_Multi-speaker_Auditorium_Decoders.pdf in the "Ambisonic stuff" section at: http://sites.google.com/site/mytemporarydownloads/ Regards, Martin -- Martin J Leese E-mail: martin.leese stanfordalumni.org Web: http://members.tripod.com/martin_leese/ ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Hybrid Hi-Fi (HyFi?), IRs, etc.
On 2012-10-05, Paul Hodges wrote: Blue Ripple Sound decoders are generally single-band at low order but become quite frequency-dependent as the order is increased, I was under the impression that frequency-dependant decoding was more important the lower the order - or am I misunderstanding something? You are perfectly correct, there. It's just that the optimum decoder optimization problem becomes evermore illposed at the higher orders when the rig is anything other than fully regular, even if its basic potential is clearly better than at lower orders. Or is it? There is some empirical evidence which suggests that few speakers, akin to the early ambisonic work, and then full diffraction limited arrays at least upto speech frequencies, as in WFS work, function the best. While anything in between could lead to harmful multiple arrivals off centre, combing artifacts, "Giant Geese", and the like. -- Sampo Syreeni, aka decoy - de...@iki.fi, http://decoy.iki.fi/front +358-50-5756111, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2 ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Dolby Atmos and Ambisonics
On 2012-10-06, Michael Demeyer wrote: I work at Dolby, although not on the Atmos team. Could you then tell us what Atmos is really about, and/or could you find somebody willing to spill the beans on it? Obviously everybody on-list would very much like to know the technical details, so that we could evaluate them individually. For our own use at least. Dolby's marketing doesn't exactly go into equations, here, you know. As Buffy says, "but what *is* it?!?" ;) -- Sampo Syreeni, aka decoy - de...@iki.fi, http://decoy.iki.fi/front +358-50-5756111, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2 ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Trans-Dimensional Portal
On 2012-10-06, Aaron Heller wrote: There's more info about this at https://www.facebook.com/TransDimensionalPortal How about a simple group called ambisonic or Ambisonics, in FB? With a number of the current best-knowing, FB-willing people as admins? No transdimensional nonsense there, but just the same, usual, well-founded stuff we mostly talked about for years on this list? As the FB-counterpart and adjunct to this list? I'd put up a group already if said persons were part of my FB-circuit. -- Sampo Syreeni, aka decoy - de...@iki.fi, http://decoy.iki.fi/front +358-50-5756111, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2 ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Trans-Dimensional Portal
On Sat, Oct 6, 2012 at 10:35 PM, Sampo Syreeni wrote: > On 2012-10-06, Aaron Heller wrote: > > There's more info about this at >> >> https://www.facebook.com/**TransDimensionalPortal<https://www.facebook.com/TransDimensionalPortal> >> > > How about a simple group called ambisonic or Ambisonics, in FB? With a > number of the current best-knowing, FB-willing people as admins? No > transdimensional nonsense there, but just the same, usual, well-founded > stuff we mostly talked about for years on this list? As the FB-counterpart > and adjunct to this list? > > I'd put up a group already if said persons were part of my FB-circuit. > I'm in. > -- > Sampo Syreeni, aka decoy - de...@iki.fi, http://decoy.iki.fi/front > +358-50-5756111, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2 > __**_ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/**mailman/listinfo/sursound<https://mail.music.vt.edu/mailman/listinfo/sursound> > -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121006/add15cf6/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Trans-Dimensional Portal
On 2012-10-06, Charlie Richmond wrote: I'd put up a group already if said persons were part of my FB-circuit. I'm in. So you are. The group resides at https://www.facebook.com/groups/355566654536126/ and Charlie is already an admin. Let's go from there, with every long time talker on this list promoted to an admin and very few left out. Perhaps make that group a nice, pretty, talking point over ambisonic, while retaining this list for hardcore technical discussion? -- Sampo Syreeni, aka decoy - de...@iki.fi, http://decoy.iki.fi/front +358-50-5756111, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2 ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
