Noise cancelling headset with mic for phone have become more and more popular nowadays. To achieve good noise-cancelling effects, noise cancelling microphone wireless headset are faced with many challenges. Among them, how to correctly select a microphone is important basic work.
The purpose of this article, issued by Addasound, is to help readers choose the correct microphone to achieve better noise cancelling conference headphones performance. Surely, it can also help you better understand the principle and implementation of noise-cancelling headphones.
Introduction of corded noise-cancelling headphones
When the ambient noise frequency is (<1 kHz) low frequency, passive noise cancellation technology cannot provide the ideal effect. Active Noise Cancellation (ANC) eliminates the original noise by picking up noise signals and generating "inverted noise" signals to achieve real-time noise cancelling. Current wireless headset with microphone noise cancelling basically uses this technology to achieve noise cancelling. In noisy environments such as streets, shopping malls, subways, train stations, aeroplanes, high-speed trains, wearing the active noise cancelling headset will achieve very good results.
Wired Headset With Noise Cancelling Microphone
Specifications of the active noise cancelling headset considered in the selection
Several important indicators of a microphone include signal-to-noise ratio (SNR), acoustic overload point (AOP), total harmonic distortion (THD), cut-off frequency, sensitivity, phase response, group delay, and current consumption. For the design of corded noise cancelling headphones, although all these specifications work, the key parameters that affect microphone selection are SNR, AOP, cutoff frequency, phase response, group delay and current consumption, and of course, the difference of the cutoff frequency and phase response of different products is also very important.
Performance limitations of existing designs of the active noise cancelling microphone headset
The design of ANC headphones is difficult to be the same. Different design schemes, such as feedback, feedforward or hybrid, each has their own advantages and limitations.
Wired headset with microphone solutions
For example, a microphone with an ultra-high AOP of 69dB SNR and 130dBSPL can be used.
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