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I’m puzzled

M-Track sampling slower than Audition tells it to

I'm using an M-Audio M-Track sound adapter running under WinXP, using Adobe Audition. When I record something, the track plays back about 10% faster than the original source was. Seems to me like the M-track is sampling slower than the 44.1k for which Audition is set to record. How can I correct this?
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  • Eliza (Official Rep) January 09, 2020 13:53
    Hey Richard,

    Thanks for posting!

    Sorry to hear that you're having trouble. The M-Track will default to your software's selected sample rate. Changing the sample rate itself will not time stretch a recording. This is because sample rates determine the number of digital samples that are taken per second. This affects the resolution of the recording only, not the BPM.

    It's analogous to holding two identical photos side by side where one was taken in focus and the other out of focus. The size and general composition of the photos are still the same, but the clarity differs.

    From your description, it sounds more likely that there's a setting in Audition that needs to be adjusted. I'm not familiar with the software, so I can't offer specific advice on the parameters. I suggest checking your Preferences for anything that refers to Playback speed or rate.

    Let me know if you have any questions!
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  • However, if Audition tells M-track to record at -- say 48 kHz sample rate -- and thinks it is doing so, but M-track is actually recording at 44.1 kHz, the recording will be time-stretched. To be clear, when the recording is displayed on-screen, 10 cycles of a 1-kHz tone ( duration: 10 ms) will appear as 0.91875 ms -- 1.1 kHz. This is what's happening. It's not actually the playback that is the issue, but the recording that is being time-compressed in the A/D process, so that I have to time-stretch the resulting .wav file to make it show up (and thus play back) at the proper speed.
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