audiorecorder - no real stereo sampling?
1 view (last 30 days)
Show older comments
Hi all,
working with the Matlab audiorecorder class I just noticed an issue:
The audiorecorder object is configured to sample 2 channels. After recording getaudiodata actually returns a [siglen x 2] signal vector. However, the second column in this signal vector is just a plain copy of the first one, i.e. no real stereo signal is recorded.
Using the same mic input for a recording (e.g. in Audacity) actually creates a real stereo signal on my machine.
Has anyone noticed a similar behaviour?
Thanks for your suggestions, cheers,
Philipp
Hardware: HP EliteBook 8540w, IDT audio codec
Software: Matlab R2009b, Windows XP SP3
2 Comments
Daniel Shub
on 15 Nov 2012
Are you sure? Unless you have a very unusual mic, your mic is mono and I would expect either noise or an identical signal on the other channel.
Answers (0)
See Also
Categories
Find more on Audio and Video Data in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!