US 7,273,978 B2 · Device and method for characterizing a tone signal

Abstract

For characterizing a tone signal a sequence of quantized entry times for each of at least two tone sources over time is provided on the basis of a quantization raster. Hereupon, a common period length underlying the at least two tone sources is determined using the sequences of entry times. Hereupon, the sequence of entry times is divided into respective sub-sequences, wherein a length of a sub-sequence is equal to the common period length. Finally, the sub-sequences for the first tone source are combined into a first combined sub-sequence and for the second tone source into a second combined sub-sequence, i.e. for example using a pattern histogram, in order to characterize the tone signal by the first combined sub-sequence and by the second combined sub-sequence, e.g. with regard to rhythm, speed or genre.

Claims21

Dependent claims

A device for characterizing a tone signal, comprising:

a provider for providing a sequence of entry times of tones for at least one tone source;
a processor for determining a common period length underlying the at least one tone source using the at least one sequence of entry times;
a divider for dividing the at least one sequence of entry times into respective sub-sequences, wherein a length of a sub-sequence is equal to the common period length or derived from the common period length;
and
a combiner for combining the sub-sequences for the at least one tone source into one combined sub-sequence, wherein the combined sub-seguence is a characteristic for the tone signal.

2 more elements

Dependencies are inferred from the claim text.

Device and method for characterizing a tone signal

Life of this patent

Device and method for characterizing a tone signal

Life of this patent

Abstract

Claims21