'Ideas for extracting a portion of a wav file and saving as new wav file in MATLAB
This may be easy but I'm no expert in MatLab. I have a bacth of wav files and I need to extract a 30s sample from each. Example:
1.wav - need 1:34-2:04
2.wav - need 5:15 - 5:45
Ideally I'd like to run a code which will take each wav file and extract the correct time period according to a pre-generated table and save each snippet as a new wav file (e.g., 1_snip.wav would be the 30secs I need to analyze). Any points in the right direction would be great. Thanks!
Solution 1:[1]
First you extract raw audio from the recording:
[signal,fs] = audioread(‘file.wav’);
The sampling rate is stored inside fs, representing your samples per second. So, 5 seconds would be 5*fs. It is thus possible to extract chunks with specific time stamps:
sig_chunk = signal(start_in_s*fs+1 : end_in_s*fs);
It’s also possible to take timestamp data from a table and use the for loop to cut audio.
Sources
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Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | petrucci9000 |