Unbalanced train segments for Dial tone
The sound of a signal that a telephone exchange or other switching equipment sends to a telephone to confirm that it is ready to initiate a connection.
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We estimate this class has medium quality
In a random sample of videos for this class, we found 5 / 10 (50%) were accurate. Note that quality in the unbalanced training set may be significantly lower.
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Unbalanced train videos for Dial tone (255)