Bose QC 20 Q&A
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Bose QC 20 Q&A

Acoustic noise cancelling headphones
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Bose
Bose
FREQUENTLY ASKED QUESTIONS
PRODUCT TECHNOLOGY
What is Acoustic Noise Cancelling
headphone technology?
For internal and reseller distribution only – Bose confidential.
QC
20
®
®
Acoustic Noise Cancelling
QC
20i
®
®
Acoustic Noise Cancelling
FPO
QC
20
®
Acoustic Noise Cancelling
Acoustic Noise Cancelling
®
reducing unwanted noise by electronically creating a signal that is the
mirror image of the unwanted noise. Microphones in the earbuds monitor
sound at the user's ear. 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 earbud's microphones) and the sound the
user wants to hear (music or silence) is noise. The system electronics
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 earbud 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 earbud 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 cancel each other (1 + -1 = 0), providing
a clean, high-fidelity sound signal at the ear.
headphones
®
headphones
®
headphones.
®
headphone technology is a method of
®
1
CC011967_NRT Nautilus QA R3 3

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Summary of Contents for Bose QC 20

  • Page 1 3. The correction signal from the system electronics. The noise and correction signal cancel each other (1 + -1 = 0), providing a clean, high-fidelity sound signal at the ear. CC011967_NRT Nautilus QA R3 3 For internal and reseller distribution only – Bose confidential.
  • Page 2 – instant by instant – to produce an opposing cancellation signal. New, patented tip technology from Bose creates a gentle seal at the entrance to the ear canal that enables full-spectrum noise reduction.

  • Page 3: General Product Information

    ® Noise Cancelling headphones? headphones from Bose, and have been designed to let the user enjoy ® their music wherever they go. They deliver an unexpected level of audio performance and noise reduction, yet are small enough to fit in a pocket.
  • Page 4 ® listening to audio when unpowered? but neither active noise cancellation nor Active EQ are able to function. Audio performance in the unpowered state is similar to that of Bose ® audio headphones (such as the Bose IE2 audio headphones).
  • Page 5 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.

  • Page 6: Parts And Accessories

    The QC ® ® into an Apple iPhone or iPod? headphones are not designed to work with Apple products. CC011967_NRT Nautilus QA R3 3 For internal and reseller distribution only – Bose confidential.
  • Page 7  2009 models and later of MacBook and MacBook Pro The remote is supported by iPod shuffle (3 generation and later). Audio is supported by all iPod models. CC011967_NRT Nautilus QA R3 3 For internal and reseller distribution only – Bose confidential.
  • Page 8 Voice Control, where available. Is the headset made by Apple? How do I The QC 20i headphones are designed and built by Bose to exacting ® know it will function with my Apple standards. The headphones have received Apple certification to product correctly? confirm they are compatible with select Apple products as intended.

  • Page 9: Battery Charging Information

    Typically, most adults will prefer the medium-size tips. CC011967_NRT Nautilus QA R3 3 For internal and reseller distribution only – Bose confidential.
  • Page 10 The tips are designed to rest gently against the opening of the ear canal and sit comfortably yet securely in the bowl of the ear. They should be the only part of the headphones in contact with the ear. CC011967_NRT Nautilus QA R3 3 For internal and reseller distribution only – Bose confidential.
  • Page 11 In many regions, there are laws that prohibit using this type of headphone Noise Cancelling headphones in my while operating a motor vehicle. However, passengers may enjoy using ® car? these headphones while riding in an automobile. CC011967_NRT Nautilus QA R3 3 For internal and reseller distribution only – Bose confidential.
  • Page 12 The Bose ® ® Aviation Headset is designed exclusively to meet these needs. For further information on the Bose A20 Aviation Headset, contact Bose Corporation at 1-800-444-BOSE. Can the QC 20 and 20i Acoustic Noise Yes. Just as you can bring your own digital music player or laptop ®...

  • Page 13: Product Differentiation

    However, Active EQ is unable to function. Audio performance in this state is similar to that of Bose audio headphones (like the Bose IE2 audio headphones). Are the QC 20 and 20i Acoustic Noise No.

  • Page 14: Other Issues

    What are the noise reduction Bose Corporation does not provide a noise reduction rating (NRR) or specifications? Is there an NRR rating? attenuation specification for our QC headphones.
  • Page 15 Research in Motion Limited and is registered in the United States and may be pending or registered ® in other countries. Bose Corporation is not endorsed, sponsored, affiliated with or otherwise authorized by Research in Motion Limited. CC011967_NRT Nautilus QA R3 3...

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Qc 20i

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