Ticket #146 (closed enhancement: wontfix)

Opened 13 years ago

Last modified 12 years ago

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!

Change History

comment:1 Changed 13 years ago by kmaclean

  • Milestone changed from WebSite 0.2.1 to WebSite 0.3

comment:2 Changed 12 years ago by kmaclean

  • Milestone changed from WebSite 0.3 to SpeechSubmission 0.2

comment:3 Changed 12 years ago by kmaclean

  • Milestone changed from SpeechSubmission 0.1.4 to SpeechSubmission 0.1.2

comment:4 Changed 12 years ago by kmaclean

  • Status changed from new to closed
  • Resolution set to wontfix

most hardware today (and of the past 5 years) supports 48kHz-16bit recording.

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