Basic Info.
Type
Electrostatic Headphones
Communication
Wireless+Wired
Usage
Home Theatre, Aviation, DJ, Portable Media Player, Computer, Mobile Phone
Function
Bluetooth, Microphone, Waterproof, Noise-Cancelling, HiFi
Vocalism Principle
Dynamic
Bluetooth Standard
Pixart V5.0+EDR
Active Noise-Cancellation
Adi(Digital)FF+Fb Over 32dB Noise Reduction Range
Waterproof Standard
Ipx-0
Working Distance
15 Meters Outdoor
Frequency Range
20Hz-20kHz
Transport Package
30*30*15cm
Product Description
AAC codecs Bluetooth Headphones Noise Canceling Headphone Wireless Foldable Dynamic Headphones Fy-BN938D
About ANC (active noise cancellation)
Active noise cancellation (ANC) is a method to identify the unwanted sound source as noise. It can
eliminate the original noise by generating "anti noise" signal, so as to eliminate the noise in real time.
Modern noise reduction headphones usually use this technology to eliminate external noise sources when
passive noise reduction can not produce ideal results, especially at lower frequencies (< 1kHz).
This can be useful in situations where workers need to protect themselves from persistent factory noise, or
when airline passengers need to filter out engine noise.
FF(Feed Forward topology) eliminate 1-2KHz noise
FB(Feed Back Topology) eliminate <1KHz noise
BN938D type advantage: ADI(digital) Chip, 4 mic FF+FB Hybrid topology, over 32dB noise reduction range \
From 20Hz to 1.2K Hz
FF+FB Hybrid working principle
Simplified block diagram of mixed ANC structure. This figure shows how the two signal paths are combined. G (W) and
m (W) are gain and phase compensation filters, while Dff and Dfb are due to the delay introduced by speakers and
microphones in the system.
ABOUT THE HEADPHONEAt present, there are two mainstream sound generating units in the earphone market, including dynamic earphone and dynamic iron earphone. The difference between them lies in the vibration mode. The dynamic earphone vibrates through the diaphragm, which is closely related to the volume of the earphone. The sound producing principle of moving iron is magnetic vibration iron sheet, with excellent analytical force and sound insulation.
At this time, there must be a friend who asked, "is it better to use dynamic earphones or dynamic iron earphones?" the price of some high-end dynamic iron earphones is better than dynamic earphones, but the price is too expensive. The dynamic earphone also has a good analytical power, and its performance in sound quality is also good. In pursuit of cost performance, the dynamic earphone is more realistic. According to the principle of sound production, the sound characteristics of the two are different. The transient performance of the moving iron earphone is generally better than that of the moving coil, and the dynamic iron performance, instantaneous detail performance and sound density of the music are also far better than those of the moving coil;
Dynamic earphones are more suitable for listening to classical music and large-scale music, while dynamic earphones are more suitable for listening to fast-paced music due to their fast transient response.Bluetooth mainly includes SBC, AAC, aptx (including aptx, aptx ll, aptx HD and aptx adaptive) and LDAC.
1,SBC(Sub-band coding)
This is the earliest Bluetooth audio coding, which is the mandatory coding format of A2DP (advanced audio distribution
profile) protocol. The main problem of SBC is the loss of details in the transmission process, which leads to the
deterioration of music listening.
2,AAC(Advanced Audio Coding)
AAC is jointly developed by Fraunhofer IIS, Dolby Laboratories, at & T, Sony and other companies. The purpose is to
replace MP3 format and ensure good sound quality performance of AAC. Generally speaking, at the same bit rate, AAC
will be better than MP3. Apple provides large AAC audio, so it is widely used in Apple devices.
3,aptX
Like SBC and AAC above, aptx is also an audio coding format, but because of its low latency, it gradually shows its
outstanding side in the field of Bluetooth transmission. Aptx has been vigorously promoted in Android mobile phones.
In the aptx family, the most basic one is aptx, which has the same bit rate as the former two, but the coding is more
efficient, so that the sound can retain more details and bring better sense of hearing.
Aptx ll, or aptx low latency, is characterized by low delay, which can reach less than 40ms, while the delay limit that can
be felt by the human ear is 70ms, which is basically equivalent to no delay. Such features are quite beneficial for playing
games and watching videos.
However, there are not many devices supporting aptx LL.
Aptx HD focuses on high-definition audio. It adds channels based on classic aptx, supports 24 bit 48Khz audio format,
greatly increases transmission rate, and has lower signal-to-noise ratio and less distortion. It provides "better than CD"
listening experience, so that you can enjoy unparalleled listening experience when using wireless Bluetooth devices.
Aptx adaptive integrates aptx ll and aptx HD, which can switch automatically on demand.
4,LDAC
LDAC is a wireless audio coding technology introduced by Sony. Its transmission rate is very high, up to 990kbps, more
than three times higher than SBC coding. It is the closest to lossless coding in wireless transmission.FAQ1. Q: What's your best price for this Portale Bluetooth Speaker?FY: We will quote you best price according to your quantity, so when you are making an inquiry, please let us know the exact quantity you want.
2. Q: Can we custom our own logo on the Headphone?FY: Yes, you can.
3. Q: Can we custom our own color for the Speaker?FY:Yes, You can,the MOQ should be over 1k.
4. Q: What's your MOQ? Can I mix styles and colors?FY: MOQ is 1pcs. If you want to custom your logo: with simple logo, MOQ is 1000pcs per model.
5. Q: What's the payment way ?FY: Payment by T/T, Paypal.
Sample order:100% payment before shipment.
Bulk order: 50% deposit and 50% blance payment before shipment.
6. Q: What's the delivery time?FY:1): Sample order: 2days since recieved payment.
2): Mass order: 4weeks after received the payment
Address:
The Shangxia Industrial District If Fulong Village of Shipai Town, Dongguan, Guangdong, China
Business Type:
Manufacturer/Factory
Business Range:
Apparel & Accessories, Electrical & Electronics, Health & Medicine
Management System Certification:
ISO 9001, IATF16949
Company Introduction:
FY(DG) is a professional designer and manufacturer to specialize in professical bluetooth speaker, portable Radio Speaker and adjustable medicinal TV/Monitor ARM, we have own 2 passionate and active designer team on the 2 different production field, and we are insisting on the business principles of "quality first" and "Customer first", our customers as our good partners since the company established and getting fast development with the idea of win-win and co-development. The big rewards are from contribution of all our colleagues and supports of all our partners.
We are insisting in developing professional and branding products with continuing innovation in technology, products, manufacturing and sales. With ideas of "developed together with partners" and "survive on the basis of quality", "develop on the basis of reputation", "offer customers the best products", our factory have developed to a hi-tech enterprise which is professionalized in all kinds of speaker systems and OEM, ODM of domestic and abroad.
We believe that our decision and operation must be accordance to market demand and market reality, closely catch up with the market development, consider "focus on quality" "service to be the best" as our mission, strictly control in the process of production to make sure the quality. We believe we can provide you satisfied service with our technology and strength. We will do better with your support!