Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th November 2003, 02:24 AM   #1
diyAudio Member
 
Join Date: Nov 2003
Location: Singapore
Question Wireless Digital Audio System

Hi,

I am building a wireless digital audio system for my school project. For a start, I'm using a simple setup as follows:

DVD player --> Wireless Transmitter --> Air (channel) --> Receiver --> Digital Audio Amplifier --> Speaker

I am using the S/PDIF output of the DVD player as my signal source ... as such, I need to find a wireless transmitter or transceiver that can support the high data rate (1.5Mbps) required by CD audio (16 bits/44.1 kHz). Has anyone build this system before or have any recommendation on which wireless transceiver to use? I have search the net and the best that I have come across are Squeak, Opensolution and Micro Linear. However, their evaluation kits are very costly. I was hoping to get something more affordable.

By the way, the digital audio amplifier is the TAS5100EVM from Texas Instruments. It uses a Class D architecture instead of the usual Class A, B or AB.

I'm stuck and hope someone can offer some advice or help regarding this problem of mine. Do drop me an email if you wish too. Thanks!


  Reply With Quote
Old 26th November 2003, 11:38 AM   #2
diyAudio Member
 
blu_line's Avatar
 
Join Date: Jan 2002
Location: The Netherlands
Default IR ?

Don't know how far apart your system components will be, but what about InfraRed ?

grtz

Simon
  Reply With Quote
Old 26th November 2003, 11:46 AM   #3
UrSv is offline UrSv  Sweden
diyAudio Member
 
UrSv's Avatar
 
Join Date: Jan 2002
Location: Sweden
Default Re: Wireless Digital Audio System

Quote:
Originally posted by audio_steve
Hi,

I am building a wireless digital audio system for my school project. For a start, I'm using a simple setup as follows:

DVD player --> Wireless Transmitter --> Air (channel) --> Receiver --> Digital Audio Amplifier --> Speaker

I am using the S/PDIF output of the DVD player as my signal source ... as such, I need to find a wireless transmitter or transceiver that can support the high data rate (1.5Mbps) required by CD audio (16 bits/44.1 kHz). Has anyone build this system before or have any recommendation on which wireless transceiver to use? I have search the net and the best that I have come across are Squeak, Opensolution and Micro Linear. However, their evaluation kits are very costly. I was hoping to get something more affordable.

By the way, the digital audio amplifier is the TAS5100EVM from Texas Instruments. It uses a Class D architecture instead of the usual Class A, B or AB.

I'm stuck and hope someone can offer some advice or help regarding this problem of mine. Do drop me an email if you wish too. Thanks!


Check Elektor Electronics the this December edition (I think) they have a project called "IR S/PDIF Transmitter" and "IR S/PDIF Receiver". Seems to be what you need. It's dirt cheap. The project was earlier in the some of the other editions. In the German edition it was in the Summer edition (I think).
__________________
UrSv
Those who say it can't be done should not stop those who are doing it.
  Reply With Quote
Old 30th November 2003, 12:48 AM   #4
Benjlv is offline Benjlv  United States
diyAudio Member
 
Join Date: Nov 2003
Location: East Lansing, MI
Send a message via Yahoo to Benjlv
the first question that comes to my mind is how far you want to transmit the signal...

short distance can be done by infered very easily.

slightly long distances through walls can be done by using bluetooth.

longer distances(300m open air i hear) or really anywhere in the house can be done using WIFI.

how exactly you would use these technologies i do not know.

One consideration i do have to say is that you may just want to send the signal via some sort of frequency modulation after its been decoded into analog. This would decrease the quality of the signal, but if done with enough bandwidth (not like normal FM radio stations) you should be able to have a good enough signal for a class D amp.

Another option is to just put the SPDIF signal on a FM carrier in the unlincensed frequency range. The have a normal FM reciever and then run the signal through a SPDIF reciever and then through a DAC...and so on.
  Reply With Quote
Old 3rd January 2004, 12:28 PM   #5
diyAudio Member
 
Join Date: Jan 2004
Location: London
Hi,

You might consider using one of the 'Video Senders', used to transmit SCART video signals around the home. They work in the 2.5Ghz range and the composite video input has enough bandwidth to manage a SPDIF signal. I currently use this to connect my PC soundcard SPDIF output (upstairs), to my 5.1 Digital amp (downstairs) for surround sound purposes.

Darren
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Radio Shack Digital Wireless Audio Link Modifications gni Solid State 6 19th October 2013 03:29 AM
2.4GHz wireless audio - true lossless audio Kay Digital Source 0 30th January 2008 10:22 AM
Audio Alchemy Digital Drive System raggingviper Digital Source 4 7th August 2007 06:58 PM
Modding a Wireless Hub for Audio Out trunkmonkey Everything Else 1 8th June 2006 10:07 AM


New To Site? Need Help?

All times are GMT. The time now is 03:04 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2