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Real-time-factor: Difference between revisions
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Usually a state of the art speech-to-text cloud-based service supplied by Google, Azure, AWS, etc. has values between 0.2 and 0.6. Note that is all very depending on many factors, the network/internet bandwith, the speech content, etc. In case of an on-prem ASR, the major impacting factor is the algorithm and the hardware resources (CPU/RAM). <syntaxhighlight lang="python"> | Usually a state of the art speech-to-text cloud-based service supplied by Google, Azure, AWS, etc. has values between 0.2 and 0.6. Note that is all very depending on many factors, the network/internet bandwith, the speech content, etc. In case of an on-prem ASR, the major impacting factor is the algorithm and the hardware resources (CPU/RAM). <syntaxhighlight lang="python"> | ||
def real_time_factor(processingTime, | def real_time_factor(processingTime, audioLength, decimals=2): | ||
''' Real-Time Factor (RTF) is defined as processing-time / length-of-audio. ''' | ''' Real-Time Factor (RTF) is defined as processing-time / length-of-audio. ''' | ||
rtf = (processingTime / | rtf = (processingTime / audioLength) | ||
return round(rtf, decimals) | return round(rtf, decimals) | ||