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Discussion Groups | Matlab DSP | How to record sound in Matlab?

Technical discussion about Matlab and issues related to Digital Signal Processing.

  

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How to record sound in Matlab? - senthilpr_in - Jan 13 17:00:00 2002

Hi everybody,
I'm working on a project on speech recog. How do you
record sound in matlab at a sampling freq of 8192Hz. Currently i'm
using windows sound recorder to record the sound at a sampling freq
of 22050 Hz which is too much for me. format conversions leads to
inaccurate reproduction of sound.

Thanx

senthil




_____________________________
 Free pdf download: Complex Digital Signal Processing in Telecommunications.




Re: How to record sound in Matlab? - Jeff Brower - Jan 14 19:52:00 2002

Senthil-

> I'm working on a project on speech recog. How do you
>record sound in matlab at a sampling freq of 8192Hz. Currently i'm
>using windows sound recorder to record the sound at a sampling freq
>of 22050 Hz which is too much for me. format conversions leads to
>inaccurate reproduction of sound.

You need a sound card that actually samples at 8.192 kHz. We use the old Tahiti

boards which have amazing analog performance (> 92 dB SNR), and we replace the
oscillator on the card so it can sample 8.192, 16.384, etc. instead of 11.025,
22.5, etc

Jeff Brower
DSP sw/hw engineer
Signalogic




_____________________________
 Free pdf download: Digital Signal Processor Fundamentals and System Design.