Ticket #146 (closed enhancement: wontfix)
How to determine max sampling rate
Reported by: | kmaclean | Owned by: | kmaclean |
---|---|---|---|
Priority: | minor | Milestone: | SpeechSubmission 0.1.8 |
Component: | Acoustic Model | Version: | 0.1-alpha |
Keywords: | Cc: |
Description
Audacity will let you change your Sample Rate and Bits per Sample to rates higher than what your Sound Card can support. It will record at the highest rate your sound card supports, and then dynamically upsample the audio to the higher rate your selected - without providing any warnings that it did this. This is NOT the approach you should take for any audio submitted to VoxForge?. The upsampling and later downsampling for use in Acoustic Models can introduce noise.
FAQ entries can help determine your max sampling rate:
Windows: How to determine your audio card's, or USB mic's, maximum sampling rate
Linux: How to determine your audio card's, or USB mic's, maximum sampling rate
Need an Open Source approach for Windows!