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Mac Forum / General / Hardware / September 2007



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Ipods for live recording

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The New Guy - 28 Sep 2007 01:25 GMT
Griffin makes a mic that clips on to the bottom of some Ipods.  I was
wondering if anyone has tried it or some other mic accessory? Being
that there is no motor noise in the Ipod, and of course the tiny size,
it opens up interesting possibilities for recording people and music.
Adrian - 28 Sep 2007 19:07 GMT
> Griffin makes a mic that clips on to the bottom of some Ipods.  I was
> wondering if anyone has tried it or some other mic accessory? Being
> that there is no motor noise in the Ipod, and of course the tiny size,
> it opens up interesting possibilities for recording people and music.

The Micromemo works well with my 5G iPod, providing uncompressed CD
quality recording. Issues to be aware of: Using the supplied microphone
or external microphone with input at mic level gives good quality but
slight hiss when listening back on good quality equipment. Switching to
line level and using an external mic through a proper preamp or mixer
avoids the hiss. The other factor for serious recording is that the
input level is not controllable by the user as it is automatic. Though
it ususually gets it right you could not depend on this for guaranteed
professional work, in my opinion. Noise from the iPod, even though
having a hard drive is not an issue with the Micromemo.

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Adrian

The New Guy - 29 Sep 2007 02:01 GMT
> > Griffin makes a mic that clips on to the bottom of some Ipods.  I was
> > wondering if anyone has tried it or some other mic accessory? Being
[quoted text clipped - 7 lines]
> line level and using an external mic through a proper preamp or mixer
> avoids the hiss.

So the Ipod doesn't have enough gain, at least for low level
recordings.  Hadn't thought of that.  It would be far preferable to
have some mics built in though  like the iTalk from Griffen.  I wonder
how the 2 products compare?  

> The other factor for serious recording is that the
> input level is not controllable by the user as it is automatic.

I guess that's the same with all the Ipods.  It would be easy, you
would think, for Apple to add that into the menus of future models.  
Let's hope they do.  

> Though
> it ususually gets it right you could not depend on this for guaranteed
> professional work, in my opinion. Noise from the iPod, even though
> having a hard drive is not an issue with the Micromemo.

Yes - of course not for pro work.  But for catching somebody talking
(giving directions for example) or recording simple acoustical musical
performances, it might give surprisingly good results.
Bob Ball - 29 Sep 2007 03:15 GMT
In article
<replytogroup-89EB66.20005428092007@news.lga.highwinds-media.com>,

> > > Griffin makes a mic that clips on to the bottom of some Ipods.  I was
> > > wondering if anyone has tried it or some other mic accessory? Being
[quoted text clipped - 28 lines]
> (giving directions for example) or recording simple acoustical musical
> performances, it might give surprisingly good results.

I have some responsibility for preparing some rehearsal CDs for my
choir, using commercial recordings, our own previous CDs and
occasionally some recordings made with the group early in the season. We
use a member's equipment for recording the group.
But I've used a Griffin iMic with my 4g iPod to record half a dozen
altos standing around a keyboard. Quick and dirty, easy to edit with
SoundStudio and give the group CDs of what they'd just rehearsed not
long afterward. The sound is nothing to brag about, but it does the job.

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Bob Ball
If you want to think positive thoughts, surround yourself with positive people.
If you want to email me, eliminate the negative.

G.T. - 29 Sep 2007 03:31 GMT
> I have some responsibility for preparing some rehearsal CDs for my
> choir, using commercial recordings, our own previous CDs and
[quoted text clipped - 4 lines]
> SoundStudio and give the group CDs of what they'd just rehearsed not
> long afterward. The sound is nothing to brag about, but it does the job.

I'm getting confused here, the iMic is a USB audio input for Macs.  Are you
talking about something like the iTalkPro?

Greg
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The New Guy - 29 Sep 2007 09:04 GMT
> > I have some responsibility for preparing some rehearsal CDs for my
> > choir, using commercial recordings, our own previous CDs and
[quoted text clipped - 7 lines]
> I'm getting confused here, the iMic is a USB audio input for Macs.  Are you
> talking about something like the iTalkPro?

Yes probably. What were they thinking when they named it an iMic.  
Probably it was brought out before the iTalk.  Now they probably wish
they had called it something more relevant.  Though many people buy it
for its input flexibility.
Bob Ball - 29 Sep 2007 15:47 GMT
In article
<replytogroup-2AAA80.03040829092007@news.lga.highwinds-media.com>,

> > > I have some responsibility for preparing some rehearsal CDs for my
> > > choir, using commercial recordings, our own previous CDs and
[quoted text clipped - 12 lines]
> they had called it something more relevant.  Though many people buy it
> for its input flexibility.

<Wince!> Yes, it was the original iTalk. It was intended for recording
speech, not music, and it's monaural. Still does the job of recording
music where perfection isn't needed. I've also used iMic, but for
recording from vinyl or tape.

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Bob Ball
If you want to think positive thoughts, surround yourself with positive people.
If you want to email me, eliminate the negative.

The New Guy - 30 Sep 2007 15:14 GMT
> > > > I have some responsibility for preparing some rehearsal CDs for my
> > > > choir, using commercial recordings, our own previous CDs and
[quoted text clipped - 5 lines]
> > > > long afterward. The sound is nothing to brag about, but it does the
> > > > job.

Is the iTalk mono only?  No stereo?  Only 1 mic built in?  Looks like
its stereo for the later generation iTalk Pro.  

> <Wince!> Yes, it was the original iTalk. It was intended for recording
> speech, not music, and it's monaural. Still does the job of recording
> music where perfection isn't needed. I've also used iMic, but for
> recording from vinyl or tape.
Bob Ball - 30 Sep 2007 16:49 GMT
In article
<replytogroup-25F6D0.09144230092007@news.lga.highwinds-media.com>,

> > > > > I have some responsibility for preparing some rehearsal CDs for my
> > > > > choir, using commercial recordings, our own previous CDs and
[quoted text clipped - 13 lines]
> > music where perfection isn't needed. I've also used iMic, but for
> > recording from vinyl or tape.

The original iTalk records only in monaural .wav, and with a low
bitrate. I recall that recording using Linux on the iPod is supposed to
overcome the bitrate restriction.

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Bob Ball
If you want to think positive thoughts, surround yourself with positive people.
If you want to email me, eliminate the negative.

The New Guy - 30 Sep 2007 19:13 GMT
> In article
> <replytogroup-25F6D0.09144230092007@news.lga.highwinds-media.com>,
[quoted text clipped - 23 lines]
> bitrate. I recall that recording using Linux on the iPod is supposed to
> overcome the bitrate restriction.

Yes, that confirms what I read.  Thanks.  I wonder if there are any
very small quality mics that could plug into the Belkin iPod mic
adaptor.  You could have the iPod hidden in a shirt pocket with the
mic poking out for some clandestine recording with very high quality
possibilities.
Adrian - 30 Sep 2007 19:18 GMT
> Is the iTalk mono only?  No stereo?  Only 1 mic built in?  Looks like
> its stereo for the later generation iTalk Pro.

Just look up the spec on the Web. The newer iTalk Pro is stereo 16bit
44.1kHz, like the Micromemo but without built in speakers.
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Adrian

The New Guy - 29 Sep 2007 09:02 GMT
> > > > Griffin makes a mic that clips on to the bottom of some iPods
> > > > called the iTalk.  I was
[quoted text clipped - 16 lines]
> > > The other factor for serious recording is that the
> > > input level is not controllable by the user as it is automatic.

So what is needed is an input level control built into the mic perhaps.

> > > Though it ususually gets it right you could not depend on this
> > > for guaranteed professional work, in my opinion. Noise from
[quoted text clipped - 13 lines]
> SoundStudio and give the group CDs of what they'd just rehearsed not
> long afterward. The sound is nothing to brag about, but it does the job.

How is the sound lacking?
I remember recording live music with ultra cheap mics plugged into a
VHS-HiFi VCR several years ago.  The dynamics of the playback sound
were surprising.  Actually everything about it was surprisingly good.  
Frequency response was lacking a bit obviously because of the mics.  I
can't even imagine how it would have sounded with top end mics, and
played back through high quality horn speakers!   Eerie I'm sure.  If
you're ever heard the Sheffield Drum Record played back on top end
horn speakers with high end audiophile electronics and a superb moving
coil cartridge mounted on a highly isolated turntable, you'll
understand.
Adrian - 29 Sep 2007 11:47 GMT
> So what is needed is an input level control built into the mic perhaps.

No. There would be no problem doing that but it wouldn't help the
(slight) background hiss issue, and you would end up with the iPod auto
gain trying to compensate for the lower signal coming in!

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Adrian

Adrian - 29 Sep 2007 11:57 GMT
> I have some responsibility for preparing some rehearsal CDs for my
> choir, using commercial recordings, our own previous CDs and
[quoted text clipped - 4 lines]
> SoundStudio and give the group CDs of what they'd just rehearsed not
> long afterward. The sound is nothing to brag about, but it does the job.

The Griffin iMic can't connect to an iPod (4g or any other version) as
far as I know. There were some memo taking audio input devices for the
4g but I wasn't aware of any which would work with an iMic interface nor
provide for 44.1k sample rate recording.

Maybe you could give some more specifics about the recording setup.

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Adrian

Bob Ball - 29 Sep 2007 15:51 GMT
> > I have some responsibility for preparing some rehearsal CDs for my
> > choir, using commercial recordings, our own previous CDs and
[quoted text clipped - 11 lines]
>
> Maybe you could give some more specifics about the recording setup.

As I just posted, I mis-wrote: It was iTalk, not iMIc. MY Apologies for
the confusion.

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Bob Ball
If you want to think positive thoughts, surround yourself with positive people.
If you want to email me, eliminate the negative.

Adrian - 29 Sep 2007 11:34 GMT
> So the Ipod doesn't have enough gain, at least for low level
> recordings.  Hadn't thought of that.  It would be far preferable to
> have some mics built in though  like the iTalk from Griffen.  I wonder
> how the 2 products compare?

The mic gain issue is almost certainly determined by the Micromemo or
whatever interface is being used. It is highly unlikely that you are
going to get a high quality mic preamp in one of these tiny add-ons. The
automatic input level issue will also influence hiss level as it may
choose a conservative gain setting to give plenty of headroom but
thereby raising the noise floor. The Micromemo is more than adequate for
the recording examples you described.

The Micromemo has a built-in mic on a flexi-stalk as well as allowing
external. It has much better specs than most of the Griffin stuff but I
see there is a a Griffin iTalk Pro which seems similar. It doesn't
indicate whether it has switchable mic/line level though.

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Adrian

 
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