In order to achieve the best user experience for each audio application, consumers' PCs usually have an audio peripheral that fills their desks. Depending on the task, users need to modify the audio settings in the software, and actually have to switch between different peripherals. For example, a pair of external PC speakers or an LCD display sound-bar is a good choice for enjoying music, but to make or extract an IM voice call, users often have to switch to headphones and microphones.

The widely used IM voice function actually prefers the cordless method of hands-free loudspeakers. Although different peripherals provide unique benefits for specific tasks, the rich choices have caused great confusion for consumers and brought a confusing desktop that is rarely used. Consumers can really benefit from the new digital, all-in-one audio system that integrates the functionality of PC speakers and the convenience of connecting hands-free loudspeakers and other portable media players or smartphones. Equally important, it provides a simple and intuitive user interface, which can certainly free users from the hassle of learning how to operate specific functions.

Refreshing comprehensive experience in different situations

Intoxicating music and video experience:

When consumers choose PC speakers for music and / or video applications, consumers worry about loudness, desk space, and the number of channels. Because of the limited space and the difficulty of balancing between a lower volume and a monotonous soundstage, most users ultimately chose small 2 / 2.1-channel speakers. Recent advances in audio DSP have the potential to improve the user experience through dynamic control of volume and frequency echo, and clever control to create a psychoacoustic perception phase that extends the 3D sound field.

Improve the voice of social networks:

One of the most challenging problems of PC VoIP applications is the echo residue. To reduce this speaker-to-microphone feedback problem, some IM networks are trying to suppress the echo from the system. This method is usually unreliable due to system or network delays. Some IM applications just recommend that users wear a headset in order to get better quality. Even worse, most people install multiple IM applications on their PCs in order to maintain contact with friends and relatives on different IM networks. The lack of Acoustic Echo Cancellation (AEC) or changing the echo reduces the performance of different IM networks and brings a bad experience to end users. It is also an important issue for PC-based VoIP that is difficult to apply on a large scale. For audio peripherals, it is critical to support hardware AEC that is independent of the IM network and operating system (OS). Other functions that reduce voice background noise and suppress interference are also welcomed by IM users.

Helps to achieve higher game interactivity:

An example is a multi-party game, where the participants need the ability to communicate with other players. Currently, this requires the purchase of a headset. Moreover, in order for the outgoing voice to be clear without being affected by background sound effects, players must leave their hands away from the joystick to press the one-way chat button. What players want is a two-way, hands-free loudspeaker that can work normally with background sound effects—all without leaving their levers with their hands.

Improve distance learning:

· Distance learning is gaining popularity worldwide, especially in higher education. For example, according to a survey by Sloan ConsorTIum, more than 96% of top-tier colleges and universities in the United States offer online courses. This trend will continue to grow as schools of all levels need to consider more ways to satisfy students' lifestyle, safety, and learning preferences, rather than the exact opposite. The online lecture tool used today is mainly a one-way video stream. Students still need to call the studio (studio) or text messages to inform teachers before they can ask questions. The ability of teachers to observe student appointments is limited, and there is no way to urge class discussions. A low-cost unified communication can support the two-way video conference function, which will greatly improve the quality of the distance education experience.

Improve the effectiveness of remote work:

According to a 2005 survey by Dieringer Research Group, 26.1 million people in the United States work at least one day a month, and 22.2 million people work from home at least one day a week. Some companies have established remote work human resources using VPN softphones (softphones), allowing managers to contact distant employees simply by dialing their PBX extension. However, without proper audio peripherals, the quality of the call may be very poor. Some reasons for poor quality calls may be echoes, squeaky sounds, low volume, and annoying background noise. An audio peripheral that supports high-definition voice-level echo cancellation and noise reduction technology can solve these problems. Other functions, such as the ability to switch the microphone selection range from 360 degrees (conference room) to 40 degrees (private conversation), can increase the flexibility of remote work offices and work methods.

Challenges in multi-function audio peripherals

Manufacturers want to develop a digital, all-in-one PC audio system. They usually focus on two main issues.

Cost: In order to find the best price point in the market, audio designers are subject to strict cost budget constraints when selecting the appropriate codec, controller, headphone and speaker amplifier, audio / speech processor, and matching software.

Reference design support: The development of an integrated audio solution requires expertise in the audio and voice fields. Although designers can try to combine speaker reference designs and loudspeaker reference designs from different chip (technology) vendors to create a new multi-chip custom design, it will be very important to get support from one vendor to optimize audio and voice performance difficult.

Conexant ’s CX20562 is an innovative on-chip speaker solution that integrates the functions of a digital audio / voice processor, audio codec, and class D amplifier, using a cost-effective 48-pin quad flat no-lead (QFN ) Encapsulation. This solution is optimized with stereo, high-fidelity 24-bit DAC for music generation. It also has a built-in echoless loudspeaker with wideband AEC and noise reduction hardware DSP. The combination of high-quality music speakers and voice amplifiers takes advantage of the latest technological advances in mixed signal and DSP integration in a full CMOS structure. This off-the-shelf solution eliminates the need for multi-chip reference designs and helps audio designers easily and cost-effectively design integrated products for high-definition audio and voice applications.

The CX20562 supports many value-added functions on the market, such as music on-hold, Aux fade-in / fade-out, BrightSound, DSP array microphone, global mobile communication system (GSM) noise immunity, and short message send button. The CX20562 has a plug-and-play USB interface for PC connection, and an auxiliary analog input for other audio peripheral connections. The device supports digital and analog volume control, microphone mute and speaker mute. The CX20562 has an additional interface for connecting the 20-key programmable keypad and the LCD display interface. The built-in Class D amplifier has the ability to drive a 1.2 W 4Ω load through the USB host Power Supply. The efficiency of the Class D amplifier makes it ideal for portable audio applications.

For higher output applications, an external amplifier can be connected to the CX20562 via headphone / line level output.

Featuring level VI energy efficiency and meet international safety standards, the external ac to dc Power Adapter accepts universal AC input voltage ranging from 100V to 240V and provides 3 years warranty. These wall plug series power adapters includes safety protections for over voltage, over current and short circuit.

Wall Plug Adapters

5V Dc Adapter,Travel Plug Adapter,Ul Power Adapter,Wall Plug Power Supply,Adapter 230V 24V

Shenzhenshi Zhenhuan Electronic Co Ltd , https://www.szzhpower.com