SPEAKER DRIVING DEVICE

• US 20190058946A1
• Filed: 10/10/2018
• Published: 02/21/2019
• Est. Priority Date: 04/12/2016
• Status: Active Grant

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Trigence Semiconductor, Inc.
• Inventors: YASUDA, Akira, OKAMURA, Jun-ichi, IWAMURA, Hiroshi
• Granted Patent: US 10,687,141 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 3/162 Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
• CPC Class Codes: G06F 3/165 Management of the audio stream, e.g. setting of volume, audio stream path
• CPC Class Codes: H03G 3/3005 in amplifiers suitable for low-frequencies, e.g. audio amplifiers H03G3/32, H03G3/34 take precedence
• CPC Class Codes: H03G 5/025 Equalizers; Volume or gain control in limited frequency bands
• CPC Class Codes: H03G 5/165 Equalizers; Volume or gain control in limited frequency bands
• CPC Class Codes: H04R 1/2819 for loudspeaker transducers
• CPC Class Codes: H04R 29/001 for loudspeakers H04R29/007 takes precedence
• CPC Class Codes: H04R 3/04 for correcting frequency response

Abstract

A speaker driving device including a setting part setting at least one parameter defining an equivalent circuit of a first speaker unit as a first parameter; a first calculator configured to change a first frequency response based on the first parameter, the changed first frequency response being applied to an input signal; and a driving signal generator configured to generate a drive signal for driving a speaker unit based on a first calculation signal, the first calculation signal being obtained by applying the changed first frequency response to the input signal.

Claims

1. A speaker drive device comprising:

a setting part setting at least one parameter defining an equivalent circuit of a first speaker unit as a first parameter;

a first calculator configured to change a first frequency response based on the first parameter, the changed first frequency response being applied to an input signal; and

a driving signal generator configured to generate a drive signal for driving a speaker unit based on a first calculation signal, the first calculation signal being obtained by applying the changed first frequency response to the input signal.

2. The speaker drive device according to claim 1, wherein

the drive signal generator including a second calculator,

the second calculator changes a second frequency response based on a second parameter corresponding a speaker unit,

the changed second frequency response is applied to the driving signal, and

the drive signal is generated based on the first calculation signal and a drive signal with the changed second frequency response by the second calculator.

3. The speaker drive device according to claim 2, further comprising:

a second UI provider providing an interface for specifying the second parameter set in the second calculator.

4. The speaker drive device according to claim 3, wherein

the second UI provider further provides an interface for specifying correction information for correcting a process in the second calculator, and the second calculator corrects the second parameter based on the correction information.

5. The speaker drive device according to claim 2, further comprising:

a specifying part acquiring information related to a speaker unit from the speaker unit to specify the second parameter based on the information.

6. The speaker drive device according to claim 2, further comprising:

a signal recording part correlates and records information for specifying the second speaker unit with the drive signal in a recording device.

7. The speaker drive device according to claim 6, wherein

the signal recording part correlates and records information for specifying the first speaker unit with the drive signal in a recording device.

8. The speaker drive device according to claim 2, wherein

the same model is used in a calculation process in the first calculator and a calculation process in the second calculator.

9. The speaker drive device according to claim 1, further comprising:

a first UI provider providing an interface for specifying the first parameter set in the first calculator.

10. The speaker drive device according to claim 1, wherein

the drive signal generator includes an output part, the output part performs adjustment of a dynamic range of the drive signal to be generated to output the drive signal to the speaker unit.

11. The speaker drive device according to claim 1, further comprising:

an output part transmitting the drive signal via a network.

12. A speaker drive device comprising:

a first calculator calculating information related to a position of a diaphragm of a first speaker unit corresponding to a specified first parameter by a calculation using an input signal and outputting a first calculation signal corresponding to the calculated information; and

a drive signal generator generating a drive signal for driving a speaker unit based on the first calculation signal;

wherein

the drive signal generator includes a second calculator,

the second calculator calculates information related to a position of a diaphragm of a second speaker unit corresponding to a specified second parameter by a calculation using the drive signal and outputting a second calculation signal corresponding to the calculated information; and

the drive signal generator generates the drive signal based on the first calculation signal and the second calculation signal.

13. The speaker drive device according to claim 12, further comprising:

a signal recording part correlates and records information for specifying the second speaker unit with the drive signal in a recording device.

14. The speaker drive device according to claim 13, wherein

the signal recording part correlates and records information for specifying the first speaker unit with the drive signal in a recording device.

15. The speaker drive device according to claim 12, wherein

the same model is used in a calculation process in the first calculator and a calculation process in the second calculator.

16. A speaker drive device comprising:

a drive signal generator generating a drive signal for driving a speaker unit based on an input signal;

wherein

the drive signal generator includes a second calculator,

the second calculator changes a second frequency response of the drive signal based on a second parameter corresponding to a second speaker unit, and

the drive signal is generated based on the input signal and a drive signal with the second frequency response changed by the second calculator.

17. The speaker drive device according to claim 16, further comprising:

a second UI provider providing an interface for specifying the second parameter set in the second calculator.

18. The speaker drive device according to claim 17, wherein

the second UI provider further provides an interface for specifying correction information for correcting a process in the second calculator, and the second calculator corrects the second parameter based on the correction information.

19. The speaker drive device according to claim 16, further comprising:

a specifying part acquiring information related to a speaker unit from the speaker unit to specify the second parameter based on the information.

20. The speaker drive device according to claim 16, further comprising:

a signal recording part correlates and records information for specifying the second speaker unit with the drive signal in a recording device.