Trimming bit of the beginning off a recorder waveform

Posted by Lowgain on Stack Overflow See other posts from Stack Overflow or by Lowgain
Published on 2010-05-14T22:03:36Z Indexed on 2010/05/14 22:14 UTC
Read the original article Hit count: 338

Filed under:
|
|
|
|

I've got a flash 10.1 app that lets me record microphone input to a wav without a media server, which I am saving to an Amazon S3 bucket.

I have another process running on a server which gets wavs from this bucket, converts to mp3 using LAME and puts them into another bucket. This all works fine, but in converting wav > mp3, about 0.1sec or so of silence is added to my sound.

In the application this are being used in, perfect sync is critical, so I need to trim off that little bit. If I have to trim it off the original waveform that is okay, I don't expect anything important to happen in that first fraction of a second.

What is the best way to go about this? I am using Adobe's WavWriter to convert by ByteArray into a proper waveform. Is there a way I can easily trim off the first few samples from my ByteArray without invalidating the structure?

Alternatively, is there a good server-side tool I can use to trim the wav before running it through LAME, or an argument I can give LAME? Or, could I even trim that sound off the mp3 after it has been converted?

Thanks!

© Stack Overflow or respective owner

Related posts about as3

Related posts about wav