Comments on: Morse Code file format changed

By: Douglas Crute

Douglas Crute — Tue, 26 Aug 2008 22:05:09 +0000

THanks to your site and and the QRZ site and also Gordon west Excellent exam book on the Extra Class licence test I was able to pass my Eliment 4.

again thanks

Yours

Douglas Crute

By: Thelma

Thelma — Tue, 08 Jul 2008 16:34:52 +0000

I liked the au files better. They could be downloaded and played over and over at my convienance.

By: Jim

Jim — Sun, 15 Jun 2008 21:27:31 +0000

Simon–Very classy Website, cleanly designed. The MP3 code comes through perfectly on this old Windows PC, which does use iTunes/QuickTime as its audio player.

Question: Can I save the MP3 files for transfer to a portable MP3 player for practice on the road? When I right-click, I don’t see a “Save file as…” choice. –Jim KJ3P

By: Brad

Brad — Tue, 03 Jun 2008 16:14:11 +0000

FB on the podcast proposal. It will be a great service to those of us who are dedicated to improving our skill.

By: Suzy

Suzy — Thu, 29 May 2008 18:07:03 +0000

I listened to the alphabet eish and ABC news on 5-29-08, and they just sounded like “dzt dzt dzt dzt dzt” with each “dzt” apparently being a whole letter run together, and of slightly different lengths, instead of the nicely toned beeps that had previously been on the website. I hope this gets cured soon.

By: Gary Pielak

Gary Pielak — Thu, 29 May 2008 10:52:30 +0000

Simon,
The new mp3 format sounds good. Thanks! I look forward to doing the headlines each morning.

By: Dominic Beesley

Dominic Beesley — Wed, 28 May 2008 20:13:12 +0000

Just had another look at the original .au files, and these still seem to “overshoot” a bit at the start / end of each tone. I’d check the lead in/out code for the original .au generation, it looks like its doing a soft lead in/out but that the parameters are a bit off. Or perhaps you’ve reduced the amplitude of the middle part of the tones but not the target of the initial envelope?

Cheers

Dom

By: Dominic Beesley

Dominic Beesley — Wed, 28 May 2008 20:07:15 +0000

Sorry Simon, I’ve only just had a chance to look back after being away for work. The quality now is, I’d say, about as good as can be hoped for - and the files nice and small.

Well done, I’m almost able to do the headlines at 5/18 now!

Dom

By: michael pechner

michael pechner — Mon, 26 May 2008 07:21:46 +0000

the new mp3 is working great on my asus eee 901 under linux using firefox.

thanks.

By: Simon

Simon — Mon, 26 May 2008 03:38:23 +0000

Continuing the mp3 saga, we found out that lame on our server was doing strange things so we switched to lame 3.97 (latest stable edition) from 3.98beta and that seems to have made a big difference to the audio quality. I’ve put the mp3 links back in again (the .au is still there) and I would welcome some feedback on the quality this time around.

@John M. - Interesting observations about the ghosting. I wonder how much the hardware (speakers, etc) comes into play with some of these things. The software writes the audio file directly, with the sound either on or off (absolute silence on the track), so there shouldnt be any ghosted sound in the actual file - perhaps its a ‘feature’ of the hardware when playing this through speakers?

@Michael - Let me know how the new mp3 files sound and if they work OK on your linux platform. I dont know how this will work for you but one of the folks on the Lame-dev list reported good results with the MOC player on linux (http://moc.daper.net/) so that might be worth a look.