Voice model builder: popular telephony vendors' 8kHz audio is quietly degrading your models
pbbakkum · x · 2026-11-13
pbbakkum shares a practical warning for anyone piping SIP telephony audio into voice models: verify your SIP trunk vendor delivers 16kHz, because several popular telephony vendors still only offer 8kHz. Upsampled 8kHz degrades model quality (ideal input is 24kHz), and his advice is simply to switch vendors rather than eat the quality loss.
Related event: Check SIP trunk audio is 16kHz before feeding voice models(3 posts)→
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