Re: Analog-to-Digital Audio:

2008-12-11 Thread Bill Davidsen

Jeff Maxwell wrote:

I am in need of a way to process an analog stereo input device
to
digital.

I basically have old cassettes and reel-to-reels that I would

like to
convert to digital.

I do have an old CD recorder that I have been using but it has

started
to have issues not being able to read the CDs I insert.

I would think the better method would be some way to connect the

audio
output of the cassette/reel-to-reel device to the input of my
sound card
and do some type of capture.

Has anyone had any success at this and how do handle 2 rca type

outputs
from the analog to the single sound card input?

Thanks.


You have had a lot of advice on hardware and software, I'll just add that the 
quality of the result is limited by the worst hardware in the chain. So unless 
you are going to buy new hardware to play the old cassettes and reel-to-reel, or 
the r2r is half inch tape recorded in a studio with top equipment, you will 
probably not lose a lot by using a decent sound card as the A-D conversion.


For two channel input I have used rec from the sox package, and left every 
ugly thing in the first recording for removal after the fact. Then you can use 
various tools to remove noise, boost quiet segments, etc. Some of the stuff on 
tape may be compressed (Dolby or similar), that's good, you can expand it later 
and it help signal to noise.


You might want to record once and use the level check in sox to tell you how 
much you can boost gain without clipping. Then record again at higher gain. 
Remember that if you have loud clicks and pops, you can boost gain and let them 
clip, fidelity is not an issue there.


Finally, for records, there is a USB connected turntable I just saw advertised, 
I think it was about $200, which is sort of borderline between consumer and 
audiophile pricing. If you have a decent table and preamp probably not needed.


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Re: Analog-to-Digital Audio:

2008-12-08 Thread Tim
Tim:
 I'd be very surprised if any of those plastic turntables were anything
 but utter crap.  But then they're aimed at the MP3/iPod users, where
 audio quality is the least thing on their mind...

Patrick O'Callaghan:
 A friend has one and is happy with it, but I haven't tried it myself.
 Given that these things are mostly going to be used to digitize old
 vinyl records, I suspect most people are going to be happy with them
 even if they aren't studio quality.

I don't think they'll get even close to being good quality.  A cheap
domestic proper turntable sounds better than a crappy plastic one.  But,
considering how many people took absolutely no care with their records,
they're probably not going to care that digitising them sounds crappy,
too.

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Re: Analog-to-Digital Audio:

2008-12-08 Thread Tim
Tim:
 I'd be very surprised if any of those plastic turntables were
 anything but utter crap.

Mikkel L. Ellertson:
 Considering the quality of the analog to digital converter most
 people are going to be using, it probably would not be much better
 using a quality turntable, cartridge, and preamp. The A to D
 converter in the sound cards of most computers is not that great.
 (Good enough for mp3, but that is about it.)

I was thinking more about how woeful the analogue side of things would
be:  Cheap cartridges with poor audio quality.  Plastic turntables that
make their own noises.  Lack of damping from external noises, etc.

Using moderately decent home HiFi turntables with the average sound
card, even a cheapy, produced quite good results, here.  The only thing
I would have complained about was surface crackle, and I'm picky about
audio quality.  I still play my records, as records.  They have their
charm, despite some inconveniences.  And listening to vinyl crackle on a
digital recording is a bit strange.

I've never really had much luck at eliminating dust-caused crackle when
playing records.  I suspect that the room the stereo's in is just bad
for static electricity.  I've tried brushes and cloths over the years, I
don't want to try chemicals, and the local water supply would be a
really bad idea for trying wet transfers.

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Re: Analog-to-Digital Audio:

2008-12-07 Thread Anne Wilson
On Friday 05 December 2008 20:31:08 Jeff Maxwell wrote:
  I am in need of a way to process an analog stereo input device
         to
         digital.
        
         I basically have old cassettes and reel-to-reels that I would
         like to
         convert to digital.

You are getting plenty of hardware advice.  I'd just like to add a software 
note.  If you use gramofile for the capture it will make a pretty good job of 
splitting the tracks for you, which saves a good bit of time and effort.  I did 
a pile of vinyl records, capturing via gramofile, then editing in audacity.  
The added advantage is that you are editing smaller files.  IMO that decreases 
the risk of making a mistake, but that might just be my caution :-)

Anne

Anne

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Re: Analog-to-Digital Audio:

2008-12-06 Thread Patrick O'Callaghan
On Sun, Dec 7, 2008 at 12:51 AM, Tim [EMAIL PROTECTED] wrote:
 I'd be very surprised if any of those plastic turntables were anything
 but utter crap.  But then they're aimed at the MP3/iPod users, where
 audio quality is the least thing on their mind...

A friend has one and is happy with it, but I haven't tried it myself.
Given that these things are mostly going to be used to digitize old
vinyl records, I suspect most people are going to be happy with them
even if they aren't studio quality.

poc

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Re: Analog-to-Digital Audio:

2008-12-06 Thread Michael Schwendt
On Sat, 6 Dec 2008 18:20:44 +1930, Patrick wrote:

 Or you can buy a ready-made USB tape player, but I'm not sure how much
 pain it would mean to get it working under Linux. Turntables are also
 available. Ironically, a lot of these actually come with Audacity even
 though they're marketed for Windows.

The makers of such players/turntables include the Win32 build of Audacity,
so they can advertise that audio editing software is included and not just
shareware/crippleware.

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Re: Analog-to-Digital Audio:

2008-12-06 Thread Mikkel L. Ellertson
Tim wrote:
 Patrick O'Callaghan:
 Turntables are also available. Ironically, a lot of these actually
 come with Audacity even though they're marketed for Windows.
 
 Mikkel L. Ellertson:
 For example:
 http://www.geeks.com/details.asp?invtid=TTUSB-PB-Rcpc=SCH
 
 I'd be very surprised if any of those plastic turntables were anything
 but utter crap.  But then they're aimed at the MP3/iPod users, where
 audio quality is the least thing on their mind...
 
Considering the quality of the analog to digital converter most
people are going to be using, it probably would not be much better
using a quality turntable, cartridge, and preamp. The A to D
converter in the sound cards of most computers is not that great.
(Good enough for mp3, but that is about it.)

Mikkel
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for thou art crunchy and taste good with Ketchup!



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Re: Analog-to-Digital Audio:

2008-12-06 Thread Dean S. Messing

Mikkel L. Ellertson wrote:
Tim wrote:
 Patrick O'Callaghan:
 Turntables are also available. Ironically, a lot of these actually
 come with Audacity even though they're marketed for Windows.
 Mikkel L. Ellertson:
 For example:
 http://www.geeks.com/details.asp?invtid=3DTTUSB-PB-Rcpc=3DSCH
 I'd be very surprised if any of those plastic turntables were anything
 but utter crap.  But then they're aimed at the MP3/iPod users, where
 audio quality is the least thing on their mind...
Considering the quality of the analog to digital converter most
people are going to be using, it probably would not be much better
using a quality turntable, cartridge, and preamp. The A to D
converter in the sound cards of most computers is not that great.
(Good enough for mp3, but that is about it.)

What sound cards (that have Linux drivers) would you recommand for
very high fidelity stereo digitising?  I have two purposes.  One is a new
interest in audio work.

Another is a project in which I need to digitise and analyse two
related analogue waveforms.  Low noise, good linearity, flat
freq. response down to 5 Hz, sampling rate of (at least)
192 Ksamples/sec are my initial specifications.  The flat response is only
a want.  I can calibrate out any deviations if they are not severe
(like being at -60dB at 5 Hz :-).

Thanks.
Dean

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Re: Analog-to-Digital Audio:

2008-12-06 Thread Les Mikesell

Dean S. Messing wrote:

Mikkel L. Ellertson wrote:

Tim wrote:

Patrick O'Callaghan:

Turntables are also available. Ironically, a lot of these actually
come with Audacity even though they're marketed for Windows.

Mikkel L. Ellertson:

For example:
http://www.geeks.com/details.asp?invtid=3DTTUSB-PB-Rcpc=3DSCH

I'd be very surprised if any of those plastic turntables were anything
but utter crap.  But then they're aimed at the MP3/iPod users, where
audio quality is the least thing on their mind...

Considering the quality of the analog to digital converter most
people are going to be using, it probably would not be much better
using a quality turntable, cartridge, and preamp. The A to D
converter in the sound cards of most computers is not that great.
(Good enough for mp3, but that is about it.)


What sound cards (that have Linux drivers) would you recommand for
very high fidelity stereo digitising?  I have two purposes.  One is a new
interest in audio work.

Another is a project in which I need to digitise and analyse two
related analogue waveforms.  Low noise, good linearity, flat
freq. response down to 5 Hz, sampling rate of (at least)
192 Ksamples/sec are my initial specifications.  The flat response is only
a want.  I can calibrate out any deviations if they are not severe
(like being at -60dB at 5 Hz :-).



You probably want to start here: 
http://ccrma.stanford.edu/planetccrma/software/ for anything resembling 
professional audio On Linux.


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Analog-to-Digital Audio:

2008-12-05 Thread Jeff Maxwell
I am in need of a way to process an analog stereo input device
to
digital.

I basically have old cassettes and reel-to-reels that I would
like to
convert to digital.

I do have an old CD recorder that I have been using but it has
started
to have issues not being able to read the CDs I insert.

I would think the better method would be some way to connect the
audio
output of the cassette/reel-to-reel device to the input of my
sound card
and do some type of capture.

Has anyone had any success at this and how do handle 2 rca type
outputs
from the analog to the single sound card input?

Thanks.


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Re: Analog-to-Digital Audio:

2008-12-05 Thread stan

Jeff Maxwell wrote:

I am in need of a way to process an analog stereo input device
to
digital.

I basically have old cassettes and reel-to-reels that I would

like to
convert to digital.

I do have an old CD recorder that I have been using but it has

started
to have issues not being able to read the CDs I insert.

I would think the better method would be some way to connect the

audio
output of the cassette/reel-to-reel device to the input of my
sound card
and do some type of capture.

Has anyone had any success at this and how do handle 2 rca type

outputs
from the analog to the single sound card input?

Thanks.


Yeah, you buy a Y connector with two RCA that goes to a 
single jack for line in on the sound card, usually a mini. 
Then set up audacity to record from line in instead of mic 
and start the player.  Once they are in audacity you can do 
whatever you want with them.


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Re: Analog-to-Digital Audio:

2008-12-05 Thread Patrick O'Callaghan
On Sat, Dec 6, 2008 at 4:01 PM, Jeff Maxwell [EMAIL PROTECTED] wrote:
I am in need of a way to process an analog stereo input device
to
digital.

I basically have old cassettes and reel-to-reels that I would
like to
convert to digital.

I do have an old CD recorder that I have been using but it has
started
to have issues not being able to read the CDs I insert.

I would think the better method would be some way to connect the
audio
output of the cassette/reel-to-reel device to the input of my
sound card
and do some type of capture.

Has anyone had any success at this and how do handle 2 rca type
outputs
from the analog to the single sound card input?

I've done this with a cassette deck. I had a friend make me a cable
that joins both tape stereo output channels into a single soundcard
input plug (this is a standard connector but I'm
electronics-illiterate so don't ask me for details :-). I used
Audacity for the capture. It's a highly manual process needless to say
(start Audacity recording, hit tape button, wait for the whole thing
to finish at normal speed, hit tape stop, stop recording) but I did
capture several audiobooks to listen to on my iPod.

Or you can buy a ready-made USB tape player, but I'm not sure how much
pain it would mean to get it working under Linux. Turntables are also
available. Ironically, a lot of these actually come with Audacity even
though they're marketed for Windows.

poc

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Re: Analog-to-Digital Audio:

2008-12-05 Thread Mikkel L. Ellertson
Patrick O'Callaghan wrote:
 
 I've done this with a cassette deck. I had a friend make me a cable
 that joins both tape stereo output channels into a single soundcard
 input plug (this is a standard connector but I'm
 electronics-illiterate so don't ask me for details :-). I used
 Audacity for the capture. It's a highly manual process needless to say
 (start Audacity recording, hit tape button, wait for the whole thing
 to finish at normal speed, hit tape stop, stop recording) but I did
 capture several audiobooks to listen to on my iPod.
 
You can pick up the 2 RCA plug to mini-stereo plug or mini-stereo to
mini-stereo cables in the electronic department of most chain
stores. They are usually listed as being for iPods.

I have a nice dec that I have used - you can have it search for the
gap between songs. It helps if you want to record individual songs,
instead of separating them in Audacity. I have been tempted by
cassette player that Computer Geeks has that is controlled by a
serial port and mounts like a CD drive.

http://www.geeks.com/details.asp?invtid=PLUSDECK2Ccpc=SCH

 Or you can buy a ready-made USB tape player, but I'm not sure how much
 pain it would mean to get it working under Linux. Turntables are also
 available. Ironically, a lot of these actually come with Audacity even
 though they're marketed for Windows.
 
For example:
http://www.geeks.com/details.asp?invtid=TTUSB-PB-Rcpc=SCH

Mikkel
-- 

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for thou art crunchy and taste good with Ketchup!



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Re: Analog-to-Digital Audio:

2008-12-05 Thread Tim
Patrick O'Callaghan:
 Turntables are also available. Ironically, a lot of these actually
 come with Audacity even though they're marketed for Windows.

Mikkel L. Ellertson:
 For example:
 http://www.geeks.com/details.asp?invtid=TTUSB-PB-Rcpc=SCH

I'd be very surprised if any of those plastic turntables were anything
but utter crap.  But then they're aimed at the MP3/iPod users, where
audio quality is the least thing on their mind...

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Re: Analog-to-Digital Audio:

2008-12-05 Thread Tim
On Fri, 2008-12-05 at 15:31 -0500, Jeff Maxwell wrote:
 I am in need of a way to process an analog stereo input device
 to digital.
   
 I basically have old cassettes and reel-to-reels that I would
 like to convert to digital.

I've found Audacity to be one of the better choices, as you have fairly
real time VU meters.  That allows you to capture at the best signal
level, in the first place (not too quiet that you lots of noise, and not
too loud that you have distortion).  Though, working in audio/video
production, and having other gear to hand, I opted for running the
player through a mixer with really good metering, after making some test
recordings to work out what were the right levels between equipment.

Another issue is hum and noise.  Computers are none-too-quiet, and earth
loops between your computer and audio equipment are going to cause
problems.  If your audio equipment is un-earthed, that won't be an
issue.  If you get hum loops, then some decent audio transformers
between them will be the easiest solution.

Resist the urge to attempt to fix hum and noise problems digitally, it's
much better to capture a good signal in the first place.  There are some
problems that you just can't get rid of, or the attempt makes yet
another mess out of the audio signal.

I found the best way of dealing with audio sources with different
sections was to caption the source without any pauses in your capture,
then carve it into the appropriate sections on the computer.  Audacity's
fade-in  fade-out filters make it easy to make the hiss neatly
disappear between tracks, so it doesn't go click between tracks on CD
recorders and/or players that insist on badly muting between tracks.

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Re: Analog-to-Digital Audio:

2008-12-05 Thread Gene Heskett
On Saturday 06 December 2008, Tim wrote:
Patrick O'Callaghan:
 Turntables are also available. Ironically, a lot of these actually
 come with Audacity even though they're marketed for Windows.

Mikkel L. Ellertson:
 For example:
 http://www.geeks.com/details.asp?invtid=TTUSB-PB-Rcpc=SCH

I'd be very surprised if any of those plastic turntables were anything
but utter crap.  But then they're aimed at the MP3/iPod users, where
audio quality is the least thing on their mind...

And if it outputs mp3's directly, its crap even if its a Fairchild Battleship.

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