How to compress speech
Posted 1 year, 3 months ago at 7:04 pm. 0 comments
I’ve been playing round with getting good quality compressed speech.
Here’s what I’ve found.
1. SMALLEST FILE SIZE ACCEPTABLE QUALITY.
For very small file size (4MB for 20 minutes) and acceptable quality,
use the LAME encoder (the the separate article on Itunes songs to find out about the LAME encoder) with the following arguments in the ‘Encoding options’ Box:
-V 9 –vbr-new -mm -h -q 0
2. An even better option than above but slightly more complicated is:
Firstly convert the file to 22khz sample rate and mono, (eg in Audacity)
then use the following LAME settings:
-V 8 –vbr-new -h -q 0
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