OMG - that's really high! Maybe Tranz have a belt holder solution - they do look kind of bulky though! Maybe worth dropping them a line, see if they'll help the Pd community
Rich Duckworth Lecturer in Music Technology Department of Music House 5 Trinity College Dublin 2 Ireland Tel 353 1 896 1500
"Digital? Is that the thing where they take a good old sine wave and they chop it up into little bits?" --- Rupert Neve
From: katja katjavetter@gmail.com To: Antoine Villeret antoine.villeret@gmail.com Cc: richard duckworth richduckworth@yahoo.com; "pd-list@iem.at" pd-list@iem.at Sent: Friday, 1 March 2013, 13:12 Subject: Re: [PD] wireless audio from Pd to PA system (katja)
Found more info about TI's PurePath wireless. Latency of wireless transmission is 768 samples minimum. Added to this must be the latencies of ad/da conversion.
http://e2e.ti.com/support/low_power_rf/f/382/t/110331.aspx
Forget about it, this concept is only useful for home entertainment.
Katja
On Fri, Mar 1, 2013 at 1:19 PM, katja katjavetter@gmail.com wrote:
Thanks everyone for your answers.
The case is unconventional because a stereo line signal must be sent from the computer. Professional wireless systems assume mic or instrument. Consumer systems do transmit stereo signal, but without bothering too much about latency.
Frankly, I did not expect the difficulty to find a good solution. Initially I wanted the wearable computer for a music video which is to be recorded live with sounds from natural objects. I bought the FM transmitter so my cameraman will be able to hear the music while he's filming. For this purpose it is ideal. Then I thought it would be good to use the computer in it's wearable mode for public performance. I figured that one of the many wireless solutions would suit the purpose, but didn't reckon with the unusual requirements.
Further searching brought me to a new technology 'PurePath' from Texas Instruments. It has a range comparable with WiFi (30m), while it seems to work with paired devices as in Bluetooth. I haven't seen consumer products with this technology, but development kits are available. A rather convincing demo is here:
http://www.youtube.com/watch?v=0YsnZQUfVGs
If this system can work with low latency it could be perfect for wireless Pd.
Katja
On Fri, Mar 1, 2013 at 11:41 AM, Antoine Villeret antoine.villeret@gmail.com wrote:
hello,
those are good for what they have been designed for and it depends on what you mean by "exellent sound quality"
I've made few tests on those few years ago and the bandwidth could be good enough to transmit guitar/bass signal but nothing else for me
a
-- do it yourself http://antoine.villeret.free.fr
2013/2/28 richard duckworth richduckworth@yahoo.com
Hi Katja
one of these would do it - check with Thomann tech support for gain issues (these are Instrument Level input) They should be fine however as active guitar pickups (like heavy style EMG pickups) output quite high levels. These type of wireless systems tend to be very rugged, have excellent sound quality and long battery life - and you'll want these things.
http://www.thomann.de/ie/cat.html?gf=wireless_for_guitar_bass&oa=pra
Rich Duckworth Lecturer in Music Technology Department of Music House 5 Trinity College Dublin 2 Ireland Tel 353 1 896
1500
"Digital? Is that the thing where they take a good old sine wave and they chop it up into little bits?" --- Rupert Neve
Message: 3 Date: Thu, 28 Feb 2013 11:53:43 +0100 From: katja katjavetter@gmail.com Subject: [PD] wireless audio from Pd to PA system To: pd-list pd-list@iem.at Message-ID: CAFY0eapPSKfw+gVaxuTr7exHqLiG+pTdu8Rk6SNTraLiys2Msg@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1
For a wearable live performance computer, I am looking into the options of sending wireless audio from Pd to a PA sound system and other listeners.
In a first experiment I've tried a Linex FM transmitter. Audio quality is good enough, and FM transmitters do not introduce latency. This option is cheap and flexible, as the signal can be received by simple radio's, which are even built into cell phones and media players. I would need to boost the transmission a bit to make it more reliable. This will of course make the equipment illegal. Even then, the risk that someone else is transmitting a stronger signal on the channel can not be excluded.
Another option could be to send audio over Wifi. This would require WLAN to be available, and one extra computer (with
audio interface) as
a receiver. To avoid extra latency the audio should be sent uncompressed, like [udpsend~] / [udpreceive~] can do it. This has the risk of packet loss and serious dropouts.
I've been searching for 2.4 GHz wireless music receivers and found things like this: http://www.sitecom.com/en/wireless-music-streamer/wl-061/p/203. They seem to act like external soundcards for your computer. In Linux though I've never managed to properly connect multiple soundcards with Pd (in OSX it's easy using the Aggregate Device Editor from Audio MIDI Setup). Also I guess these devices introduce huge latency. With audio over bluetooth headsets I've experienced latencies up to a second.
Does anyone use a satisfactory method in practice, to send audio from Pd without
wires?
Thanks, Katja
Pd-list mailing list Pd-list@iem.at to manage your subscription (including un-subscription) see http://lists.puredata.info/listinfo/pd-list
End of Pd-list Digest, Vol 95, Issue 152
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list