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US 9,872,105 B2Granted
Helmet equipped with sound signal processing unit and sound signal processing apparatus
AssigneeBorderless Incorporated
InventorsSuHyon Kim, Arata Oono
Life of this patent
Estimating the term…
Abstract
A speaker and a microphone are provided to a helmet main body. A phase of a sound signal passing through a high pass filter is controlled by a first phase control section, and is amplified by a first amplification section. A phase of a sound signal passing through the low pass filter is controlled by a second phase control section, and is amplified by a second amplification section. These sound signals are synthesized by a synthesis section. A drive section drives the speaker according to a synthesized sound signal. A control section switches phase inversion processing/non-inversion processing of the phase control sections and controls an amplification factor of the amplification sections based on sound power of the sound signal.
Claims12
A helmet, comprising:
- a helmet main body configured to cover the head of a wearer;
- a speaker arranged nearby an ear of the wearer and at the inside of the helmet main body;
- a microphone arranged on the helmet main body;
- a high pass filter configured to execute a high-pass processing on a sound signal of an external sound detected by the microphone;
- a low pass filter configured to execute a low-pass processing on the sound signal;
- a first phase control section configured to control a phase of a sound signal subjected to the high-pass processing;
- a second phase control section configured to control a phase of a sound signal subjected to the low-pass processing;
- a first amplification section configured to amplify a sound signal phase controlled by the first phase control section;
- a second amplification section configured to amplify a sound signal phase controlled by the second phase control section;
- a synthesis section configured to synthesize sound signals amplified by the first and second amplification sections to generate a synthesized sound signal;
- a drive section configured to drive the speaker according to the synthesized sound signal;
- and
- a control section configured to control the first and second phase control sections and the first and second amplification sections to switch phase inversion processing/non-inversion processing on the sound signal subjected to the high-pass processing, switch phase inversion processing/non-inversion processing on the sound signal subjected to the low-pass processing, change an amplification factor for the sound signal subjected to the phase control by the first phase control section and change an amplification factor for the sound signal subjected to the phase control by the second phase control section according to sound power on at least a portion of a band of the sound signal of the external sound.
10 more elements
A helmet, comprising:
- a helmet main body configured to cover the head of a wearer;
- a speaker arranged nearby an ear of the wearer and at the inside of the helmet main body;
- a microphone arranged on the helmet main body;
- a sensor arranged in the helmet main body configured to detect acceleration or a speed;
- a high pass filter configured to execute a high-pass processing on a sound signal of an external sound detected by the microphone;
- a low pass filter configured to execute a low-pass processing on the sound signal;
- a first phase control section configured to control a phase of a sound signal subjected to the high-pass processing;
- a second phase control section configured to control a phase of a sound signal subjected to the low-pass processing;
- a first amplification section configured to amplify a sound signal receiving phase control by the first phase control section;
- a second amplification section configured to amplify a sound signal receiving phase control by the second phase control section;
- a synthesis section configured to synthesize sound signals amplified by the first and second amplification sections to generate a synthesized sound signal;
- a drive section configured to drive the speaker according to the synthesized sound signal;
- and
- a control section configured to control the first and second phase control sections and the first and second amplification sections to switch phase inversion processing/non-inversion processing on the sound signal subjected to the high-pass processing, switch phase inversion processing/non-inversion processing on the sound signal subjected to the low-pass processing, change an amplification factor for the sound signal subjected to the phase control by the first phase control section and change an amplification factor for the sound signal subjected to the phase control by the second phase control section according to a detection value of the sensor.
11 more elements
A sound signal processing apparatus, comprising:
- a speaker;
- a microphone;
- a high pass filter configured to execute a high-pass processing on a sound signal of an external sound detected by the microphone;
- a low pass filter configured to execute a low-pass processing on the sound signal;
- a first phase control section configured to control a phase of a sound signal subjected to the high-pass processing;
- a second phase control section configured to control a phase of a sound signal subjected to the low-pass processing;
- a first amplification section configured to amplify a sound signal receiving phase control by the first phase control section;
- a second amplification section configured to amplify a sound signal receiving phase control by the second phase control section;
- a synthesis section configured to synthesize sound signals amplified by the first and second amplification sections to generate a synthesized sound signal;
- a drive section configured to drive the speaker according to the synthesized sound signal;
- and
- a control section configured to control the first and second phase control sections and the first and second amplification sections to switch phase inversion processing/non-inversion processing on the sound signal subjected to the high-pass processing, switch phase inversion processing/non-inversion processing on the sound signal subjected to the low-pass processing, change an amplification factor for the sound signal subjected to the phase control by the first phase control section and change an amplification factor for the sound signal subjected to the phase control by the second phase control section according to sound power of a band of at least a part of the sound signal of the external sound.
9 more elements
Dependencies are inferred from the claim text.