Sound reproducing device
AssigneesPioneer Corporation, Tohoku Pioneer Corporation
InventorsYoshinao Kato, Toshihiro Kuroda
Life of this patent
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Abstract
A sound-reproducing device has a DSP and a μCom performing a predetermined calculation to an input signal, and an AMP amplifying the calculated signal and outputting the signal to a speaker unit. The DSP and the μCom cuts a part of a reverse characteristic of a frequency characteristic of the speaker unit in a low frequency, and superimposes the reverse characteristic on the input signal. The sound-reproducing device can overcome a shortage of low sound during reproduction of low to medium volume in the speaker unit having a relatively small diameter, and can keep reproduction sound quality without loss of the reproduction sound quality during reproduction of large volume.
Claims13
A sound-reproducing device comprising:
- an arithmetic device calculating an input signal;
- and
- an amplifying device amplifying the calculated signal and outputting the signal to a speaker unit,
- wherein the arithmetic device superimposes a reverse characteristic of an output sound pressure frequency characteristic of the speaker unit in a vehicle interior on the input signal, and
- the arithmetic device adds correction information based on the output sound pressure frequency characteristic of the speaker unit in the vehicle interior to the reverse characteristic.
A reproducing method of a sound-reproducing device, the reproducing method comprising:
- a calculation process for performing a calculation of an input signal;
- and
- an amplification process for amplifying the calculated signal via an amplifying device and outputting the signal to a speaker unit,
- wherein the calculation process performs a calculation for superimposing a reverse characteristic of an output sound pressure frequency characteristic of the speaker unit in a vehicle interior on the input signal, and
- the calculation process adds correction information based on the output sound pressure frequency characteristic of the speaker unit in the vehicle interior to the reverse characteristic.
Dependencies are inferred from the claim text.