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CS_compare_signatures
The CS_compare_signatures function determines the similarity of two audio clips
from their signatures.
CS_Similarity_Score CS_compare_signatures(
const CS_Signature sig1, /* signature array 1 */
const CS_Signature sig2 /* signature array 2 */
);
Parameters
- sig1
- Identifies an array containing the first signature.
- sig2
- Identifies an array containing the second signature.
Return Values
If the function succeeds, the return value is a floating-point similarity score
indicating the extent to which the two audio clips sound alike. This score ranges from
0.0 (least similar) to 100.0 (most similar).
If the function fails, the return value is negative. The function will fail if
either signature is invalid.
Remarks
Each parameter identifies an array containing a signature that was obtained through
a call of
CS_get_signature.
Reversing the order of the parameters does not change the similarity score.
The two audio clips need not have been recorded with the same resolution or sample rate and
need not have the same duration.
Generally, a similarity score of 70 or more indicates a good match, that is, the clips
sound substantially alike. Comparing signatures derived from identical clips always
yields a score of 100.0.
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