The Tc Group A/s

Søren Henningsen Nielsen

Esben Skovenborg

Lars Arknæs-Pedersen

Kim Rishøj Pedersen

Ivar Iversen

A musical instrument tuner for string instruments is provided which comprises a signal classifier for determining a signal class of an input signal from a number of monophonic signal classes and a number of polyphonic signal classes, a signal analyzer for determining at least one representation of a pitch frequency of the input signal, and an indicator for displaying an output established on the basis of the signal class and the representation of a pitch frequency.

Polyphonic tuner

The present invention relates to a musical instrument tuner, e.g. a guitar tuner, featuring different levels of detail for displaying monophonic and polyphonic characteristics of an input signal.

A musical instrument tuner for string instruments is disclosed, which comprises a signal classifier for determining a signal class of an input signal from a number of monophonic signal classes and a number of polyphonic signal classes, a signal analyzer for determining at least one representation of a pitch frequency of the input signal, and an indicator for displaying an output established on the basis of the signal class and the representation of a pitch frequency, wherein the indicator includes at least a monophonic display mode and at least a polyphonic display; and wherein the display mode is selected in dependency of the signal class determined by the signal classifier. Tuning methods, computer program products, music instruments, amplifiers and audio processors relating to the above are also disclosed.

The present invention relates to a musical instrument tuner, e.g. a guitar tuner, featuring tuning as a part of a user session.

The present invention relates to a musical instrument tuner, e.g. a guitar tuner, featuring simultaneous display of monophonic and polyphonic characteristics.

Method of evaluating perception intensity of an audio input signal (IS) comprising the steps of receiving the audio input signal (IS), estimating a time variant distribution function (TVDF) on the basis of said audio input signal (IS) or a derivative thereof, determining the perception intensity as at least one perception intensity estimate (PIE) on the basis of said estimated time variant distribution function (TVDF). According to the invention perception intensity has been obtained on the basis of a time variant distribution function. Thereby, an advantageous universal and flexible determination of perception intensity is obtained. The universal applicability is basically obtained due to the fact that a distribution function may match and describe audio input signal of very different nature. Thus, according to the invention even speech, music and noise may be evaluated on the basis of a distribution function.

Method of evaluating perception intensity of an audio signal and a method of controlling an input audio signal on the basis of the evaluation

The invention relates to a loudness meter including display means and data-processing means where the data-processing means establishes loudness estimates on the basis of an input signal, a first part of the loudness meter indicating a current loudness estimate on the display means, a further part of the loudness meter indicating a time window of previous loudness estimates on the display means.

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Lystrup, Denmark

Søren Henningsen Nielsen