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Apparatus for providing an audio signal for reproduction by a sound transducer, system, method and computer program

a technology of audio signal and audio transducer, applied in the direction of electrical transducers, frequency response correction, instruments, etc., can solve the problems of degrading audio quality, affecting the user's life, and judging headphones with frequency response, so as to facilitate the life of other users and improve user satisfaction , the effect of improving user satisfaction

Inactive Publication Date: 2014-12-18
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about a device that automatically identifies a sound transducer, like a headphone, and selects a set of equalization parameters based on that identification. This makes it easier for users to adjust the equalization parameters and achieve good quality sound using the selected parameters. The device can use image recognition to identify the sound transducer and select the parameters, which would be very difficult for users to do manually. Additionally, the device can download sets of parameters from a database and use them, which improves user satisfaction and makes the device more user-friendly.

Problems solved by technology

However, in many cases, the sound transducers are bought separately by the customers, which often results in a degradation of the audio quality.
In many cases, headphones that have a frequency response which strongly differs from an ideal frequency response, are judged to have a bad audio quality.
Measuring these frequency responses of headphones is quite challenging.
However, this compatibility often comes at the prices of a poor matching between the device and the headphones.
However, an identification of the headphone has not been possible by such simple means.
However, these concepts do not take into account information about the specific headphone model.
However, the frequency resolution is not sufficient for high-quality equalization, and the filter parameters to be set are not known to the user.
However, a choice of headphone filters is limited.
There is no way to match the device for another type of loudspeaker.

Method used

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  • Apparatus for providing an audio signal for reproduction by a sound transducer, system, method and computer program
  • Apparatus for providing an audio signal for reproduction by a sound transducer, system, method and computer program
  • Apparatus for providing an audio signal for reproduction by a sound transducer, system, method and computer program

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first embodiment

[0079]FIG. 1 shows a block schematic diagram of an apparatus for processing an audio signal for reproduction by a sound transducer, according to the present invention. The apparatus according to FIG. 1 is designated in its entirety with 100.

[0080]The apparatus 100 comprises an equalization parameter determinator 110 for determining a set 112 of equalization parameters. The apparatus 100 also comprises an equalizer 120 configured to equalize an input audio signal 122, to obtain an equalized audio signal 124. The equalizer 120 typically receives the set 112 of equalization parameters provided by the equalization parameter determinator 110 for the equalization.

[0081]The equalized audio signal 124 is intended for reproduction by a sound transducer 130, wherein the sound transducer 130 is typically not part of the apparatus 100. Rather, the sound transducer 130 is typically an external sound transducer like, for example, an external loudspeaker, headphone, headset, or the like.

[0082]The ...

second embodiment

[0090]FIG. 2 shows a block schematic diagram of an apparatus for processing an audio signal for reproduction by a sound transducer, according to the present invention. The apparatus according to FIG. 2 is designated in its entirety with 200.

[0091]The apparatus 200 comprises an equalization parameter determinator 210 for determining a set 212 of equalization parameters. The apparatus 200 further comprises an equalizer 220 configured to equalize an input audio signal 222, to obtain an equalized audio signal 224, which is intended to be reproduced by a sound transducer 230, which typically is external to the apparatus 200.

[0092]The equalization parameter determinator 210 comprises a sound transducer identification 210a which is configured to identify a sound transducer using an identification signal 214 which is provided by the sound transducer via an audio connection. The equalization parameter determinator also comprises a parameter selection 210b which is configured to select a set ...

third embodiment

[0098]FIG. 3 shows a block schematic diagram of an apparatus for processing an audio signal according to the present invention. The apparatus according to FIG. 3 is designated in its entirety with 300.

[0099]The apparatus 300 comprises an equalization parameter determinator 310 for determining a set 312 of equalization parameters. The apparatus 300 also comprises an equalizer 320 configured to equalize an input audio signal 322, to obtain an equalized audio signal 324, which is intended to be output by the sound transducer 330 (which is typically external to the apparatus 300).

[0100]The equalization parameter determinator 310 is configured to obtain a set 312 of equalization parameters using a measurement of an impedance of the sound transducer 330 over frequency. In some embodiments, the equalization parameter determinator 310 may be configured to perform said measurement of the impedance of the sound transducer over frequency. However, alternatively, the equalization parameter dete...

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Abstract

An apparatus for processing an audio signal for reproduction by a sound transducer includes an equalization parameter determinator for determining a set of equalization parameters and an equalizer configured to equalize an input audio signal, to obtain an equalized audio signal. Different concepts for the determination of the set of equalization parameters include an image recognition, an evaluation of an identification signal which is provided by the sound transducer via an audio connection, and a measurement of the impedance of the sound transducer over frequency. Also, an upload functionality and a download functionality are provided.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of copending International Application No. PCT / EP2013 / 053743, filed Feb. 25, 2013, which is incorporated herein by reference in its entirety, and additionally claims priority from U.S. Application No. 61 / 602,767, filed Feb. 24, 2012, which is also incorporated herein by reference in its entirety.[0002]Some embodiments according to the invention are related to apparatuses for processing an audio signal for reproduction by a sound transducer. Some embodiments are related to a system comprising an apparatus for processing an audio signal for reproduction by a sound transducer. Some embodiments are related to methods for processing an audio signal for reproduction by a sound transducer. Some embodiments are related to a computer program.[0003]An embodiment according to the invention is related to a downloadable headphone equalization.BACKGROUND OF THE INVENTION[0004]Sound transducers like, for example, headp...

Claims

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Application Information

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IPC IPC(8): H04R3/04G06F17/30H04R1/10
CPCH04R3/04G06F17/30743H04R1/1091H03G5/165H04S7/308H04R2420/05H03G5/005H04S7/307G06F16/683G06F3/165
Inventor LESCHKA, FLORIANFLEISCHMANN, FELIXPLOGSTIES, JANSILZLE, ANDREAS
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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