21ic News Wolfson Microelectronics has announced the world's first complete, ready-to-use noise cancellation solution for mobile phones, the WM2200, which delivers revolutionary audio quality to both parties.
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The WM2200 is equipped with Wolfson's enhanced myZoneTM Ambient Noise Cancellation (ANC) technology and a variety of first-of-a-kind features including transmission path (Tx) noise cancellation, acoustic echo cancellation (AEC), wind noise suppression and Wolfson's unique Receive path (Rx) active noise cancellation technology, all of which combine to provide a significantly enhanced, clear and transparent voice call without the need to care about the environmental or background noise surrounding the caller and the caller.
Tx noise cancellation minimizes the background noise captured by the handset microphone and only sends the caller's voice with a noise rejection of up to 32dB. On the receiver side, Rx noise cancellation in the handset will provide up to 20dB of noise rejection. It works by detecting any external noise and producing an inverted signal of the same magnitude to neutralize the background noise, so the receiver will Only hear the voice of the calling party. The device can be used in both narrowband and wideband voice calls.
Because the system does not have to know the architecture of the device, the WM2200 can be easily introduced into existing handset designs with minimal design effort; using existing voice microphones and increasing the number of microphones in mobile phones today Trends, in general, can achieve a variety of functions, such as for high-quality conference calls and video recording beamforming. Compared to today's various ANC solutions, the WM2200's multiple power management advantages can extend talk time by more than 25% and reduce the number of passive components by 20%. So this solution significantly extends battery life while simplifying system design.
"As the world's first noise cancellation solution for mobile phones, the WM2200 provides clear and transparent voice calls to both the calling and receiving parties of the call without having to worry about external environmental noise." Wolfson Microelectronics Audio Center Product line manager Duncan Macadie said: "This technology not only significantly improves the voice call experience for mobile phone users, but also significantly reduces the number of times a mobile phone user hangs up, thus extending the length of the call and then giving it to the mobile phone network. The operator brings the corresponding revenue."
Samples of the WM2200 are now available for delivery.
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