ISCC - Audio-Code

A similarity preserving hash for audio content (soft hash).

Creates an ISCC object that provides an iscc-field with an Audio-Code and a duration-field.

The Content-Code Audio is generated from a Chromaprint fingerprint provided as a vector of 32-bit signed integers. Chromaprints are extracted with fpcalc 1.5.0 using the following command line parameters:

$ fpcalc -raw -json -signed -length 0 myaudiofile.mp3

gen_audio_code(cv, bits = 64)

Create an ISCC Content-Code Audio with the latest standard algorithm.

Parameters:

Name	Type	Description	Default
cv	Iterable[int]	Chromaprint vector	required
bits	int	Bit-length resulting Content-Code Audio (multiple of 64)	64

Returns:

Type	Description
dict	ISCC object with Content-Code Audio

gen_audio_code_v0(cv, bits = 64)

Create an ISCC Content-Code Audio with algorithm v0.

Parameters:

Name	Type	Description	Default
cv	Iterable[int]	Chromaprint vector	required
bits	int	Bit-length resulting Content-Code Audio (multiple of 64)	64

Returns:

Type	Description
dict	ISCC object with Content-Code Audio

soft_hash_audio_v0(cv)

Create 256-bit audio similarity hash from a chromaprint vector.

Parameters:

Name	Type	Description	Default
cv	Iterable[int]	Chromaprint vector	required

Returns:

Type	Description
bytes	256-bit Audio-Hash digest