Headset and headphone

摘要

An earphone including at least one microphone, an analog pre-emphasis filter for pre-emphasis of the microphone signal, an AD-converter for digitizing the output signal of the pre-emphasis filter, an active noise compensation unit for performing active noise compensation based on the pre-emphasized and digitized output signal of the microphone and for outputting a counter sound signal, and a DA-converter for performing analog/digital conversion of the counter sound produced by the active noise compensation unit.

主权项

1. A earphone comprising:
at least one microphone configured to detect noise; at least one analog pre-emphasis filter configured to pre-emphasize a microphone signal comprising noise; an AD-converter configured to digitize the pre-emphasized output signal of the pre-emphasis filter; an electro-acoustic reproduction transducer; an active noise compensation unit configured to:
perform active noise compensation based on the pre-emphasized and digitized output signal of the AD-converter having the digitized noise; andoutput a counter sound signal to the electro-acoustic reproduction transducer; and a DA-converter configured to perform digital/analog conversion of the counter sound signal produced by the active noise compensation unit; wherein filter parameters of the pre-emphasis filter are adapted to the maximum expected level of the audio signals detected by the microphone.