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Wireless Analog Audio
This thread has 10 replies. Displaying all posts.
Post 1 made on Saturday May 7, 2016 at 09:07
crosen
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I need to get a stereo analog audio feed from point A to point B with no latency. It's about 30ft with one exterior wall between A and B. I will have 110V power at both ends.

I see a ton of products that do this, but nothing from a reputable company.

Any suggestions?
If it's not simple, it's not sufficiently advanced.
Post 2 made on Saturday May 7, 2016 at 09:43
kwkshift
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Are you looking for something other than Sonos?
Post 3 made on Saturday May 7, 2016 at 09:46
buzz
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Audioengine?

Keep in mind that external masonry walls can essentially be opaque to RF energy. Your mileage will vary. Best if you can give the RF transmitter exposure to a window that overlooks the outside area.
OP | Post 4 made on Saturday May 7, 2016 at 10:50
crosen
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What I'm trying to do is add an outdoor audio zone that will be fed by a 16x16 audio matrix. There is power at the outdoor location, but no other cables or - as far as we've concluded - way to run new wires.

So, I'd like to take one of the analog audio out feeds from the matrix and beam it wirelessly to the outdoor location, where I will have an amp and speakers.

Because this outdoor zone is not far from other outdoor zones that are fed by the matrix, there cannot be any latency.
If it's not simple, it's not sufficiently advanced.
Post 5 made on Saturday May 7, 2016 at 11:11
buzz
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Audioengine latency is very low. I've been using them for subwoofers and difficult to wire adjacent rooms.

There is always some sort of latency. Sound travels at about one foot per millisecond in air. A speaker at the other end of the property will seem delayed with respect to the speaker that you are standing next to and a person near the other speaker will claim that your speaker is delayed when, in fact, the speakers are aligned in time.
Post 6 made on Saturday May 7, 2016 at 11:13
ggarza270
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Ive used a soundcast sub cast before to send stereo. But there was no speakers around so I'm not sure if there was delay in the audio from the subcast.

[Link: gosoundcast.com]
Post 7 made on Saturday May 7, 2016 at 11:44
tweetymp4
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On May 7, 2016 at 11:13, ggarza270 said...
Ive used a soundcast sub cast before to send stereo. But there was no speakers around so I'm not sure if there was delay in the audio from the subcast.

[Link: gosoundcast.com]

There's a switch on the units that toggles between no latency (shorter distances) and delay (longer range). They call it something like " same room" and "multi room". The only way to know it it will work with no delay is to try it.
I'm Not an engineer, but I play one on TV.
My handle is Tweety but I have nothing to do with the organization of similar name. I just had a really big head as a child so folks called me tweety bird.
Post 8 made on Saturday May 7, 2016 at 15:53
Ernie Gilman
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I've set up a delay line in a church where it's sixty feet from front to back. The delay is hardly noticeable. Most people kinda think there's a room echo. I set the speakers that fill in sound from the ceiling with a 30 msec delay and it's almost impossible to hear any delay now.

Yes, it's possible to hear 30 msec, but it's not at all easy. You probably won't notice if there is that much delay.

I expect buzz will have a good opinion on this.

By the way, I have an Atlantic Technology WA-5030 sitting on my desk (in the box). It's got a wireless transmitter and receiver. The receiver has a 30 watt (per channel, I think) output. This would do exactly what you need. There's no digital delay, only analog delay, which is in picoseconds.
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 9 made on Saturday May 7, 2016 at 17:55
buzz
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Sensitivity to delay varies between individuals and can be enhanced with training (experience). The annoyance factor also depends on the material. Intimate percussive music would suffer more than playback of a recording of a live event.

In a college party we inserted a deliberate tape delay of a few hundred milliseconds between two rooms and no one seemed to notice. Perhaps it was the "brownies" that some were consuming, but that much delay would have driven me crazy if it had been permanent.

Carefully managed latency can be constructive, as in Ernie's church above. Recently, I set up a live outdoor sound reinforcement system where the stage was 70 feet from the audience. We couldn't wire to the stage. I deliberately picked a wireless relay that included a 70ms latency. Alignment was perfect. Without the latency there would have been a discomforting collision between the acoustically delayed direct sound from the stage and the nearly instant arrival of the amplified sound.

The 70ms latency was a lucky coincidence in this case. Otherwise I would have used a signal processor. Modern signal processors include delays, equalization, compression, etc, and make all of this very easy. In earlier times, at one "box" per effect, including all of this processing would be an expensive, difficult to manage mess.
Post 10 made on Wednesday May 11, 2016 at 15:13
PatMac
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I have used the Soundcast devices numerous times with no problems. They just sit there and run for years.
Post 11 made on Thursday May 12, 2016 at 02:01
Ernie Gilman
Yes, That Ernie!
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On May 7, 2016 at 15:53, Ernie Gilman said...
I expect buzz will have a good opinion on this.

Told ya so.
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw


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