How to record sound in Matlab?

Started by senthilpr_in January 13, 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



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



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



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