--- Forwarded Message from "Chen Xiaobin" <[log in to unmask]> ---
>From: "Chen Xiaobin" <[log in to unmask]>
>To: "Language Learning and Technology International Information Forum"
<[log in to unmask]>
>References: <[log in to unmask]>
>Subject: Re: #8044.9 Audio Recording (!)
>Date: Wed, 26 Oct 2005 23:41:30 +0800
Thanks! In all, all these things are related to the quality of the
recordings. If we want to have a more clear effect, we should not attach the
mic to the sound card directly. Right?
Thank you very much for the explanation.
Chen Xiaobin
----- Original Message -----
From: "LLTI-Editor" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, October 22, 2005 2:28 AM
Subject: Re: #8044.9 Audio Recording (!)
> --- Forwarded Message from Bob Majors <[log in to unmask]> ---
>
>>Date: Thu, 20 Oct 2005 12:52:16 -0700 (PDT)
>>From: Bob Majors <[log in to unmask]>
>>To: Language Learning and Technology International Information Forum
> <[log in to unmask]>
>>Subject: Re: #8044.5 Audio Recording (!)
>>In-Reply-To: <[log in to unmask]>
>>References: <[log in to unmask]>
>
>> ... why don't you just attach the mic to the
>> "mic input" of the computer sound card? I think it is the easiest way to
>> record sound directly into the computer. But I don't know whether the
>> effect
>> of the sound will be satisfactory.
>> Regards,
>> Chen Xiaobin
>
> I'm not the original poster of the external mic pre-amp/ USB audio
> converter follow-up message, but there are some advantages of using an
> external USB or FireWire analog converter:
>
> - Balanced microphone inputs, which offer better quality (when balanced
> mics are use) and lower noise. When using an unbalanced mic or mic input,
> longer cable runs (to isolate the mic from the computer acoustical noise
> (fans, hard drive noise)) -- the noise problem of an unbalanced signal is
> increased.
> - Often phantom power is available in external boxes, which is required by
> many quality microphones.
> - (Usually) better microphone pre-amps.
> - (Usually) better A/D and D/A converters.
> - The mic pre-amp, which amplifies a *very* low level audio signal, can
> pickup RFI and other noises prevalent inside the computer (from hard
> drives, etc., etc.). This can add noise to a recording.
> - An external box is portable (can be used on different computers).
> - External boxes have control pots (potentiometers -- knobs) for
> headphone volume and output volume, which are handier to grab and ride
> than adjusting software settings.
> - Some audio cards either have mic inputs or line-level inputs, so while
> there are ways to use either for either source, having a dedicated line
> and mic input in an external box is handy.
> - The headphone and audio jacks are often less prone to breakage --
> compare a 1/8" mini jack on a sound card to 1/4" jacks on external boxes.
>
> That all said, in many cases a built-in sound card may do the job just
> fine, depending on the quality desired, the components in use, etc.
>
> Bob Majors
> Language Learning Center
> University of Washington
>
|
