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Letters and emails should contain complete name, address and daytime phone number. Letters to the Editor are submitted on the condition that Silicon Chip Publications Pty Ltd may edit and has the right to reproduce in electronic form and communicate these letters. This also applies to submissions to "Ask SILICON CHIP" and "Circuit Notebook".

Audio delay needed
for satellite broadcasts

May I add my support to Rob Chand­ler’s letter (Mailbag, page 4, January 2011) concerning audio/video delay.

I am a regular viewer of Deutsche-Welle TV via AsiatSat3. The audio and video are seldom in sync. I have written to DW and predictably they responded that the problem was with the satellite operator. A software fix would be ideal, however my TV and PC are at opposite ends of the house.

Would you please give some serious thought to a hardware version which could be located beside my TV and its delayed output could be connected to the audio amplifier already connected to the TV line output. I don’t have a problem with the cricket. As the ABC audio leads the video I have warning of an “event” and usually turn in time to see it happening on TV.

David Voight,VK3FDV,
via email.

Eye-Fi now has
ShutterSnitch application

That was a great letter from Laurie Bell (Mailbag, November 2010) and his discussion on the “progress” in modern electronics – especially things that don’t remember their settings without power and DVD players that take forever to respond to front-panel button presses.

Regarding the DAB+ tuner project of October 2010, why is it so much better than other designs that also use the Venice 7 module? It is stated as a fact in the first few paragraphs of the article but not expanded on.

What don’t the others do? How does the SILICON CHIP design “extract the very best sound quality possible out of every DAB+ broadcast signal”?

Regarding the Eye-Fi story in the October 2010 issue, back in about 2003 Nikon launched the WT-1 WiFi transmitter as an accessory to the D2H Pro DSLR which was great but it was a large external device mounting to the camera base and very expensive. The current Nikon WT-4 is more a belt-pack style, still over $1000 but may have better range than the Eye-Fi as it has an external antenna.

The Eye-Fi has brought the capability to a much wider audience at a great price. Check the link below to photographer Rob Galbraith’s website on Eye-Fi use with an application called ShutterSnitch which receives and displays pictures wirelessly on an iPad, iPhone or iPod touch, moments after they’re shot. It also has in-depth tips on configuration and on establishing a reliable connection between a camera transmitter (including the Eye-Fi card and Nikon & Canon WiFi devices) and ShutterSnitch:

David Boyes,
Gordon, ACT.

Comment: with regard to the DAB+ tuner, while most DAB+ radios provide similar facilities their sound quality generally leaves a lot to be desired.

Domestic lighting may be limited
but other power demand is not

You may be assured that the design of our houses is in safe hands with the issue of the “Building Code of Australia 2010” taking effect from 2011.

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