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| | |-+  Tinny Recording
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Author Topic: Tinny Recording  (Read 4127 times)

Offline Arkle

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Tinny Recording
« on: December 10, 2007, 07:07:51 AM »
Can anyone tell me why my recordings (optical line in from Sat Tv) sound a little tinny with that "digital echo" almost like recording from a poor internet connection?

It's mild but it's there.

Any way to eradicate it?

Thanks,

Arkle
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Offline Llorean

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Re: Tinny Recording
« Reply #1 on: December 10, 2007, 07:12:37 AM »
What do you mean by "Digital Echo"?

With an optical input, Rockbox records the exact bitstream you provide it. If you're getting funny sounding audio, test your output and your cable.
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Offline petur

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Re: Tinny Recording
« Reply #2 on: December 10, 2007, 08:55:46 AM »
or maybe post a sample somewhere....

recording as WAV/MP3/Wavpack ?
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Offline Arkle

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Re: Tinny Recording
« Reply #3 on: December 10, 2007, 08:57:53 AM »
It sounds like when I record from streaming and the quality isn't good you get a kind of echo sound - almost like the sound is coming down a tin pipe.  But it's mild and only dicernable through headphones - which of course I use often.

Thanks,

Arkle
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Offline mborus

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Re: Tinny Recording
« Reply #4 on: December 10, 2007, 01:37:35 PM »
Quote
Can anyone tell me why my recordings (optical line in from Sat Tv) sound a little tinny with that "digital echo" almost like recording from a poor internet connection?

Without listening to a sample some guesses:

Are you recording in mono or stereo? Mono recordings from
stereo TV sources often have phase problems that sound very tinny.

If your recording is stereo, try to play back just one channel.

Also, if you are recording into mp3, check the bit rate or do some
tests in wav-format.
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Offline Arkle

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Re: Tinny Recording
« Reply #5 on: December 14, 2007, 11:29:33 AM »
How do I include a sample recording? Can't find button to include it in reply.

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Offline LambdaCalculus

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Re: Tinny Recording
« Reply #6 on: December 14, 2007, 11:37:59 AM »
Sound files don't seem to be allowed as attachable files.

Maybe if someone PMs you for a file, you can send it to them.
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Offline Arkle

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Re: Tinny Recording
« Reply #7 on: December 14, 2007, 01:47:22 PM »
Ah no up loading sound files.  OK.

Well I am recording in stereo.

I wondered was it perhaps because the sat dish wasn't perfectly aligned or something like that but what I notice is that there's no odd sound when recording via minidisc.
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Offline dreamlayers

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Re: Tinny Recording
« Reply #8 on: December 15, 2007, 01:41:00 AM »
Do WAV encodings sound bad or only MP3 encodings?  Remember, satellite TV uses lossy encoding and so you're effectively transcoding it to MP3.  The results would be worse than MP3 encoding from a source which hasn't been compressed before.
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