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66 Posts

01-21-2013

Seattle, Washington, USA

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  • Message 1 of 9

Recording stereo with a TPT2

2013-04-20, 9:26 AM

I would like to record in stereo using an external microphone using my TPT2.


When I plug the external microphone into the headphone/microphone jack using a 3.5mm stereo plug (3 conductor), the internal microphone is not disabled and the external microphone is ignored. My guess is that this in not a combination microphone/headphone jack for stereo. The User Guide says it would work (presumably in mono) with a four-conductor headphone/mike plug such as the iPhone uses.

 

When I plug the external microphone into the docking station's microphone jack, the recording is in mono, even with a stereo source.

I can use a USB microphone, and that will be in stereo if the microphone is. Any other way to record in stereo?

 

 

But can I record in stereo using the headphone/microphone jack?

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161 Posts

02-24-2013

Poland

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Re: Recording stereo with a TPT2

2013-04-21, 8:34 AM
Paul,
You must change recording devices settings.
In desktop mode right-click on speaker next to clock on the taskbar.
_____________
Maciek on TPT2 - 3679-25G (3G / NFC / pen) PL
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66 Posts

01-21-2013

Seattle, Washington, USA

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  • Posts: 66
  • Registered: ‎01-21-2013
  • Location: Seattle, Washington, USA
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  • Message 3 of 9

Re: Recording stereo with a TPT2

2013-04-21, 15:14 PM

I did that, thanks. That's how I was able to get a mono recording through the dock. I don't have a plug with the headset microphone connector or I'd try that using the TPT2's jack, but that would be mono as well. Using a stereo plug in the TPT2's jack just didn't work; it recorded from the built-in microphones regardless of what I selected in recording settings.

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161 Posts

02-24-2013

Poland

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Re: Recording stereo with a TPT2

2013-04-22, 14:24 PM

You're right. Mono only.

Perhaps via some external audio device, but usb has low power and so is the platform.

Not an easy task.

_____________
Maciek on TPT2 - 3679-25G (3G / NFC / pen) PL
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66 Posts

01-21-2013

Seattle, Washington, USA

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  • Message 5 of 9

Re: Recording stereo with a TPT2

2013-04-22, 15:53 PM

I've used Zoom handheld recorders (H1, H2n, H4n) as USB microphones before, and there is plenty of power for them. I'm hoping to avoid a big cable, and the recorders can either record OR function as a USB mike, not both at the same time.

 

I'll see if I can get them to do mono output....

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161 Posts

02-24-2013

Poland

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  • Message 6 of 9

Re: Recording stereo with a TPT2

2013-04-22, 16:12 PM

I thought of external audio cards with own cpu's. Like creative ones.

Those devices do all job externally, something like below:

http://au.store.creative.com/sound-blaster/sound-blaster-easy-record/1-19003.aspx

But I've never tested it with TPT2.

_____________
Maciek on TPT2 - 3679-25G (3G / NFC / pen) PL
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101 Posts

01-24-2013

Germany

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  • Message 7 of 9

Re: Recording stereo with a TPT2

2013-04-22, 21:37 PM

I use a Tascam US-600 and it works fine.

 

 Important in my selection: The Tascam US-600 has a separate power supply. So the low powered USB-Connector is no problem...

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66 Posts

01-21-2013

Seattle, Washington, USA

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  • Message 8 of 9

Re: Recording stereo with a TPT2

2013-04-23, 0:49 AM

I didn't try the Zoom recorders without batteries, but they run on USB power when used as a USB mike. I'll try 'em tonight if I have a few minutes.

Everything I've tried with the TPT2 has worked (including a full-size M-Audio Axiom 49 MIDI keyboard controller) EXCEPT hard disk drives and the DVD reader/writer I tried.

I was able to get everything to work with the docking station, with a powered hub plugged in, or with a Y cable (available at Amazon for about $5) and a battery-powered 5V power supply with enough juice. For safety, I use the hub to (hopefully) isolate the TPT2, plug the data cable into the hub, and plug the power (red) USB connector into the battery. It also seems to work without the hub, and it appears to draw about 500mA from the TPT2.

Note: Lenovo hasn't gotten back to us to say if this is OK. So doing this is at your own risk. If you damage your tablet and/or void your warranty, don't say I didn't warn you..

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66 Posts

01-21-2013

Seattle, Washington, USA

105 Signins

770 Page Views

  • Posts: 66
  • Registered: ‎01-21-2013
  • Location: Seattle, Washington, USA
  • Views: 770
  • Message 9 of 9

Re: Recording stereo with a TPT2

2013-05-02, 7:42 AM

I tried my Zoom H2n without batteries as a USB microphone; it works fine--the TPT2 provides enough power.

Most of the plug-in USB audio interfaces don't support stereo input--even some that specs say do. Be especially wary of something that is primarily for headsets.

I found two that work nicely. One is the Andrea Electronics USB-SA (www.andreaelectronics.com). This one will not record stereo out of the box; you have to install their AudioCommander software and set the recording input to Stereo Recording (the default is VoIP and mono). Once it's set it seems to stay set, so you can just plug in and record. This device is primarily designed for voice applications with noise-cancelling mics, but it does a good job recording stereo audio and is an amazingly small USB dongle (with a short cord).

The other is the Griffin Technologies iMic. This is a small box and comes with a longer cord. It's specifically designed for recording stereo audio from line input or a mic (switchable), and it works as soon as you plug it in. http://store.griffintechnology.com/laptops/imic

They're both a little less than US $30 from Amazon.com.

These give better quality audio than you'd get from a built-in plug even if it were stereo input, so they're worth it.

Peace,

Paul

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