Audio signal processing method, audio signal processing device and earphone
An audio signal processing and audio signal technology, used in speech analysis, instruments, etc., can solve the problems of dull signal at the sending end, medium and high frequency voice attenuation, medium and high frequency noise attenuation, etc.
Pending Publication Date: 2020-10-30
HUAWEI TECH CO LTD
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[0004] However, the inner ear microphone not only attenuates the mid-to-high frequency noise, but also significantly attenuates the mid-to-high frequency voice, so the generated signal at the sending end sounds dull and has a high degree of distortion
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[0028] The audio signal processing method provided in this application can be applied to an in-ear headset, which includes two earplugs, and each earplug includes an inner ear microphone and an external microphone. The number of inner ear microphones can be one or more, and the number of external microphones can be one or more. The following is a detailed introduction to in-ear headphones:
[0029] See figure 1 , The headset 10 provided in the present application includes an inner ear microphone 101 and an external microphone 102. After the user puts on the headset, the inner ear microphone 101 is located in the ear canal, and the external microphone 102 is located outside the ear canal. When the user makes a sound, the inner ear microphone 101 can convert the collected sound signal into an inner ear audio signal, and the external microphone 102 can convert the collected sound signal into an external audio signal. The inner ear audio signal includes a voice component and a nois...
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An audio signal processing method comprises the following steps: respectively receiving a first inner ear audio signal and an external audio signal; converting the first inner ear audio signal into asecond inner ear audio signal; determining a first filter according to the second inner ear audio signal; filtering the second inner ear audio signal by using a first filter to obtain a filtered signal; and synthesizing a first output audio signal according to the filtering signal and an external audio signal. Medium-high frequency voice of the inner ear audio signal can be enhanced through the first filter. Moreover, the attenuation degree of the medium-high frequency voice of the external audio signal is relatively low, and the audio signal synthesized by the filtering signal and the external audio signal has better medium-high frequency voice, so that the voice quality of the earphone transmitting end can be improved. The invention further provides an audio signal processing device.
Description
Technical field [0001] This application relates to the field of audio signal processing, and in particular to an audio signal processing method, audio signal processing device and earphones. Background technique [0002] The development of voice communication technology and the wide application of communication equipment have greatly facilitated people's daily lives. When users use headsets and other devices to make a voice call, environmental noise will cause the quality of the voice signal to decrease, thereby affecting the comfort of the call. [0003] Regarding the environmental noise problem in headset communication, an existing speech enhancement technology is roughly as follows: use the inner ear microphone to collect the sound of the ear canal, use the external microphone to collect the environmental noise, and use the environmental noise collected by the external microphone as the reference signal to eliminate the ear canal The noise component in the voice and the voice c...
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IPC IPC(8): G10L21/0208G10L21/0216G10L21/0232
CPCG10L21/0208G10L21/0216G10L21/0232G10L2021/02165
Inventor 吴超肖甫仇存收
Owner HUAWEI TECH CO LTD