Hi,
I was wondering if anyone can formalize the difference between a played audio
buffer and the same audio buffer, played from a speaker and captured by a
microphone.
For example, if I take the original buffer and the captured buffer and run on
both FFT, would the result look the same? what is the expected difference
between the two? how can I know it's the same content?
Can anyone recommend a noise reduction function that would do this best for the
matching purpose? should I even use one, or is there a test in which the noise
would be eliminated?
Thanks
Difference between original sound and microphone recorded sound
Started by ●December 7, 2009
Reply by ●December 7, 20092009-12-07
Hi ,
Surely there will be difference in the contents as the captured content with
micro phone would have been modified with Transfer functions of Speker &
Micro phone.
Incase if these transfer functions are flat in freq domain ( ideal case and
may not be possible in real-time scenarios ) then these 2 datas might be
same.
Noise reduction - depends on the source of the noise ( spkr , mike , place
etc.. ).
Thanks&Regards,
Sada.
--------
From: a... [mailto:a...] On Behalf
Of k...@gmail.com
Sent: Monday, December 07, 2009 2:04 PM
To: a...
Subject: [audiodsp] Difference between original sound and microphone
recorded sound
Hi,
I was wondering if anyone can formalize the difference between a played
audio buffer and the same audio buffer, played from a speaker and captured
by a microphone.
For example, if I take the original buffer and the captured buffer and run
on both FFT, would the result look the same? what is the expected difference
between the two? how can I know it's the same content?
Can anyone recommend a noise reduction function that would do this best for
the matching purpose? should I even use one, or is there a test in which the
noise would be eliminated?
Thanks
Surely there will be difference in the contents as the captured content with
micro phone would have been modified with Transfer functions of Speker &
Micro phone.
Incase if these transfer functions are flat in freq domain ( ideal case and
may not be possible in real-time scenarios ) then these 2 datas might be
same.
Noise reduction - depends on the source of the noise ( spkr , mike , place
etc.. ).
Thanks&Regards,
Sada.
--------
From: a... [mailto:a...] On Behalf
Of k...@gmail.com
Sent: Monday, December 07, 2009 2:04 PM
To: a...
Subject: [audiodsp] Difference between original sound and microphone
recorded sound
Hi,
I was wondering if anyone can formalize the difference between a played
audio buffer and the same audio buffer, played from a speaker and captured
by a microphone.
For example, if I take the original buffer and the captured buffer and run
on both FFT, would the result look the same? what is the expected difference
between the two? how can I know it's the same content?
Can anyone recommend a noise reduction function that would do this best for
the matching purpose? should I even use one, or is there a test in which the
noise would be eliminated?
Thanks