Bose QuietComfort 25 Скачать руководство пользователя страница 1 | Manualshive

Страница: 1 / 15

Bose QuietComfort 25 Скачать руководство пользователя страница 1

For internal and reseller distribution only – Bose confidential

.

CC013997 QC25 FAQ 5.6.14

1

Bose

®

QuietComfort

®

25

Acoustic Noise Cancelling

®

headphones

FREQUENTLY ASKED QUESTIONS

PRODUCT TECHNOLOGY

What is Acoustic Noise Cancelling
headphone technology?

Acoustic Noise Cancelling headphone technology is a method of
reducing unwanted noise by electronically creating a signal that is the
mirror image of the unwanted noise. Microphones in the earcups monitor
sound at the user’s ear and externally. The monitored sound (music and
noise) is compared to the sound the user wants to hear (the signal coming
from the audio input – this could be music or silence). The difference
between the monitored sound (from the earcup’s microphone) and the
sound the user wants to hear (music or silence) is noise. The electronics in

the QuietComfort 25 Acoustic Noise Cancelling headphones instantly
process the noise signal, and a precise equal and opposite signal
(correction signal) is created. This opposite signal is then sent to the
speaker in the earcup along with the sound the user wants to hear (again,
this could be music or silence). The result is three signals being presented
to the user’s ear:

1. Noise (monitored by the earcup microphones) from the environment.

2. The sound the user wants to hear (music or silence) from the audio
input.

3. The correction signal from the system electronics.

The noise and correction signal nearly cancel each other (1 + -1 = 0),
providing a clean, high-fidelity sound signal at the ear.

Bose QuietComfort 25
Acoustic Noise Cancelling headphones.

1
2
3
...
»

Содержание QuietComfort 25

Страница 1: ...en the monitored sound from the earcup s microphone and the sound the user wants to hear music or silence is noise The electronics in the QuietComfort 25 Acoustic Noise Cancelling headphones instantly process the noise signal and a precise equal and opposite signal correction signal is created This opposite signal is then sent to the speaker in the earcup along with the sound the user wants to hea...

Страница 2: ...e passive noise reduction is achieved by the combination of the acoustic design and materials chosen for the earcups and cushions What is Active EQ Active EQ equalization involves electronically tuning the frequency response to closely match the proprietary Bose response curve for headphone audio The closer the frequency response comes to matching the target curve the more lifelike the audio perfo...

Страница 3: ...ers to hear more of their music and movies while traveling at the office or at home How much noise do the QuietComfort 25 Acoustic Noise Cancelling headphones cancel It is difficult to establish one number that is valid for all the different environments and situations where the headphones can be used The headphones will reduce unwanted noise to a level that is noticeably more comfortable when com...

Страница 4: ...ted Without power neither active noise cancellation nor Active EQ is able to function Audio performance in the unpowered state is similar to that of Bose audio headphones such as the Bose AE2 audio headphones How comfortable are the QuietComfort 25 Acoustic Noise Cancelling headphones The headphones were designed to maximize all of the features that contribute to user comfort especially when using...

Страница 5: ... convenience for yourself We recognize some consumers will choose to purchase less costly products However we also know that when consumers are looking for the best in terms of performance and quality Bose products not only deliver but they also do so at a great value How much is the shipping and handling Standard shipping and handling costs may vary according to sales channel Is there sales tax I...

Страница 6: ...andard audio attenuator cable Material Number 309748 0020 Bose QuietComfort 25 remote and microphone accessory Black Material Number 720875 0010 for use with select iPod iPhone and iPad models Bose QuietComfort 25 remote and microphone accessory White Material Number 720875 0020 for use with select iPod iPhone and iPad models Dual plug adapter Material Number 027598 Carrying case Black Material Nu...

Страница 7: ... models What happens if I plug my headphones into an older iPod iPhone or iPad model that isn t on the compatibility list The cable with inline remote and microphone included with the QuietComfort 25 Acoustic Noise Cancelling headphones is only designed for use with most iPod iPhone and iPad models It is incompatible with the original iPhone the headset will not physically plug into the mobile pho...

Страница 8: ...them hold the earcup marked L in your left hand and the earcup marked R in your right hand Gently rotate your thumbs together until each earcup turns 90 Then pivot the right earcup up into the space inside the headband to allow for compact storage in the case While both earcups pivot up it is recommended to pivot the right cup to make dressing the cable in the case easier Can I use the QuietComfor...

Страница 9: ...as you can bring your own digital music player or laptop computer onboard you can bring your own personal headphones onboard However as with any electronic device there are FAA restrictions on use during takeoff and landing You are required to obey the directions of flight attendants throughout the flight Can I use the QuietComfort 25 Acoustic Noise Cancelling headphones to watch an in flight movi...

Страница 10: ... lowered enough the attenuating adapter with single or dual plugs can be used to achieve the desired output volume In addition if you are using an iPod iPhone or iPad you can use the inline remote to adjust the source volume by pressing the top bottom buttons on the remote Are the QuietComfort 25 Acoustic Noise Cancelling headphones wireless headphones No However the noise reduction technology can...

Страница 11: ...rt or debris into the ports Do not blow air into or vacuum the ports or the interior of the earcups What do I do if the earcup cushions come off The earcup cushions are held in place by a mounting flange That flange snaps under eight small tabs located around the inside of the earcup If an earcup cushion becomes partially or completely detached push its mounting flange back into the earcup Then us...

Страница 12: ...phones which included A single detachable audio cable Fold flat storage Elimination of the inline control box Reduction of noise floor electronic hiss Improved audio performance In 2005 Bose updated the QuietComfort 2 headphones with new silver and chrome styling and improved audio performance The headband also was redesigned for greater durability and increased shielding of electromagnetic interf...

Страница 13: ...mance with a smoother and more balanced audio response Do the QuietComfort 25 Acoustic Noise Cancelling headphones deliver better audio reproduction than Bose audio headphones Yes Although all of our consumer headphones utilize TriPort acoustic headphone structure which enables a bass response not commonly found in headphones QuietComfort 25 headphones utilize Active EQ to closely match the Bose t...

Страница 14: ...ally available In fact NRR as defined by the government cannot be determined for this product because the test method specified by law is generally recognized to be inaccurate when applied to active devices Will the QuietComfort 25 Acoustic Noise Cancelling headphones help consumers that suffer from tinnitus hyperacusis or autism Bose Corporation does not make any claims about relief of tinnitus h...

Страница 15: ...dphones cannot create any static pressure in the earcups We infrequently receive reports from people who believe they are feeling some such pressure The only explanation we have is that the perceived sonic effect one hears when wearing any well performing ANR headphone where the low frequency sound in one s environment is significantly reduced also can be caused when one s eardrums are under a pre...

Отзывы:

Нет отзывов