Bone conduction earphone

PeaceEar-FI

Function overview

QDC bone conduction tactical communication headset has won many patents. It is a high-tech product based on bone conduction technology. It fundamentally solves the problem that walkie talkie cannot communicate in high noise environment. The traditional communication products take air as the transmission medium. In the high noise environment, the voice of the walkie talkie has been completely submerged in the noise, so it is impossible to communicate normally. The bone conduction communication earphone adopts the whole bone conduction and DSP technology. Neither speaking nor listening needs air as the transmission medium, and the sound is completely transmitted by the facial bone vibration, which shields the noise to the greatest extent. Even in the noise environment, it can still receive a very clear sound without affecting the sound of the surrounding environment. The unique advantages of bone conduction communication earphones are especially suitable for disaster relief and security use in fire fighting sites, government celebrations, mass gatherings, large-scale sports events, concerts and other occasions.

Product composition

The whole product consists of two parts, i.e. headset and large key control box. Earphone technology adopts bone conduction technology based on facial bone vibration, including bone conduction horn and bone conduction microphone, which are close to cheek when used. The overall design is solid and durable, thick and heavy-duty.

technical parameter

1. Whole bone conduction: bone conduction horn + bone conduction microphone, sending and receiving are bone conduction

2. The sound distortion is small, the reduction degree is high, can distinguish the familiar person's speech clearly.

3. Design of cable self detaching device: Φ 4.2mm black spiral tensile cable is used as the connecting cable, and 7-core safety self detaching device is used as the connecting plug, which can ensure quick detaching in case of emergency and guarantee the life safety of users. *

4. Ergonomic design: the fixed steel card can be adjusted freely (there are 13 limit points on both sides), and the top headband can be retracted and put freely to adapt to the head type differences of different users; the bone conduction horn uses the natural tension of spring to closely fit the facial bones, while ensuring comfortable, reliable and long-term wearing, and does not affect helmets, air respirators, gas masks and other protective uses Use of products.

5. Speech and listening do not use air as the transmission medium to ensure clear communication in high noise environment, small leakage when listening, and good confidentiality.

6. The ears are open, and the user will not be affected to listen to the sound of the surrounding environment when wearing.

7. Wide PTT key design, freeing the user's hands. When the user's hands are occupied (such as holding a water gun, carrying a stretcher, etc.), it is convenient to press PTT with the elbow to realize normal communication.

8. It is equipped with independent power supply battery, which does not consume the power of interphone. A new battery can be used continuously for at least 80 hours, and the standby time is more than 20 days. It is not limited by the interphone model, and can match almost all interphones on the market. *

9. Special designed tactical back clip, 360 degree rotation, flexible and simple, strong and durable. 10. Specification and parameters of bone guide horn:

Sensitivity (1kHz) 0.141vrms (0.1MW): 77 ± 3dB (DB re 1.0 dyne)

Nominal impedance: 20 Ω± 20% (1kHz)

DC resistance: 10 Ω ± 20%

Nominal power (1kHz) 0.774vrms (30MW): 91.5 ± 3dB (DB re 1.0 dyne) thd: < 5%

Maximum power (1kHz) 1.183vrms (70mW): 95.2 ± 3dB (DB re 1.0 dyne) thd: < 10%

11. Specification and parameters of bone guide horn:

Bias voltage: 1.5V

Sensitivity (re 1V / 1g acceleration, 1kHz): - 39db (re 1.0V / g)

Output impedance (1kHz): 5200 ± 300 Ω (related to frequency)

Maximum working current: 50ua

 

QDC0401

0401 specifications of concealed communication headset

Maximum volume output @ 3kHz: 110dB

Frequency response: 300 ~ 3600Hz

Signal processing mode: electret

Noise filtering mode: hard suppression

Battery signal: znq2a10

Battery working time: 100hr

Low voltage alarm / power on tone: beep/--

Signal to noise ratio: < 45dB

Storage temperature: - 20 ℃ to 70 ℃

Operating temperature: 0 ℃ to 40 ℃

Size: 5 * 10 * 15mm

Weight (including battery): 1.1g

Color: beige

Wireless PTT remote control function (optional): the appearance of high imitation car key, super camouflage and confusion; volume increase and decrease and mute; remote control and receiver box matching; battery voltage detection function; nfmi near-field technology;

Remote control specifications

Wireless technical specification: nfmi

Battery model: cr2450

Battery life: more than 1 year

Operating distance: 60cm to 150cm

Volume control: 6 steps

PTT key life: > 100000

Bottom voltage alarm: LED

Pairing method: manual operation

Waterproof requirements: IP67

Adapter &amp; induction coil parameters (integrated coil or satchel type concealed mode)

Color: skin color

Impedance: ≥ 40 Ω (freq: 300Hz ~ 1kHz); ≥ 130 Ω (freq > 5KHz)

Length: 65cm, with self detaching device

Maximum input signal: 3.5vrms

Power supply mode: Duel power supply (from radio or bat)

Power supply voltage range: 3.3V to 10V

Microphone parameters

Model: all directions

Impedance: 4.4k Ω at 1kHz

Dexterity @ 1kHz (DB re 1.0V / 0.1pA): - 53.0 ± 2dB

Frequency response: 100Hz ~ 10kHz

Maximum working current: 50ua

Power supply voltage: 1.5V ~ 10V

Temperature range: - 10 ℃ ~ 60 ℃

 

QDC0501

0501 digital covert headset is a high-performance, all digital, adaptive noise reduction, micro wireless headset.

Features of 0501 digital hidden communication headset:

The DSP with 4 microprocessors system can automatically identify the environment noise and implement 32 kHz sampling and 128 frequency point high-resolution real-time effective noise reduction by applying advanced intelligent noise reduction algorithm. This can effectively eliminate various types of noise and ensure natural and clear voice.

Through the effective algorithm of noise reduction function and advanced hardware design, the electromagnetic interference caused by the ignition device of automobile engine, transmission line and many other electronic and electric equipment is reduced.

When the audio signal is weak or does not exist, the squelch system makes the headset in standby mode. In this mode, the headset does not have any sound output.

4-channel wide dynamic compression, high fidelity 20 bit audio processing; 93 DB dynamic input range

8-band digital filter, which can adjust the magnification under different frequencies according to users' preferences;

Automatic volume control (AGC) with variable threshold, time constant and adaptive release time;

Intelligent maximum output volume limiter to ensure the user's comfort when listening to high volume;

16 kHz bandwidth;

Low voltage alarm;

Micro earphone, suitable for wearing on left or right ear at the same time;

Through CE, FCC and other certification, obtained the inspection report of the Ministry of public security and the inspection report of the Chinese Academy of Sciences.

Specifications of 0501 digital hidden communication headset

Maximum volume output @ 3kHz: 110dB

Frequency response: 300 ~ 3600Hz

Signal processing mode: electret @ DSP

Noise filtering mode: soft squelch

Battery signal: znq2a10

Battery working time: 100hr

Low voltage alarm / power on tone: beep/--

SNR: > 45dB

Storage temperature: - 20 ℃ to 70 ℃

Operating temperature: 0 ℃ to 40 ℃

Size: 5 * 10 * 15mm

Weight (including battery): 1.3g

Color: skin color

Compliance standard: CE / FCC

Adapter &amp; coil parameters (integrated coil or satchel type concealed mode)

Color: skin color

Impedance: ≥ 40 Ω (freq: 300Hz ~ 1kHz); ≥ 130 Ω (freq > 5KHz)

Length: 65cm, with self detaching device

Maximum input signal: 3.5vrms

Power supply mode: Duel power supply (from radio or bat)

Power supply voltage range: 3.3V to 10V

Note: coil interface and control box scheme are determined by interphone interface, with slightly different appearance

Microphone parameters:

Model: all directions

Impedance: 4.4k Ω at 1kHz

Dexterity @ 1kHz (DB re 1.0V / 0.1pA): - 53.0 ± 2dB

Frequency response: 100Hz ~ 10kHz

Maximum working current: 50ua

Power supply voltage: 1.5V ~ 10V

Temperature range: - 10 ℃ ~ 60 ℃

Wireless PTT remote control function (optional): the appearance of high imitation car key, super camouflage and confusion; volume increase and decrease and mute; remote control and receiver box matching; battery voltage detection function; nfmi near-field technology.

Remote control specifications:

Wireless technical specification: nfmi

Battery model: cr2450

Battery life: more than 1 year

Operating distance: 60cm to 150cm

Volume control: 6 steps

PTT key life: > 100000

Bottom voltage alarm: LED

Pairing method: manual operation

Waterproof requirements: IP67