Sound signal processing method and mobile terminal
A sound signal, mobile terminal technology, applied in speech analysis, instruments, etc., can solve the problem of difficult to suppress or eliminate howling sound to ensure the quality of human voice, and achieve the effect of good user experience
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no. 1 example
[0032] Such as figure 1 Shown is a flow chart of the first embodiment of the method for processing sound signals of the present invention. The processing method of the sound signal comprises:
[0033] Step 101, acquiring a first sound signal collected by a microphone of a mobile terminal.
[0034] In the embodiment of the present invention, the first sound signal is collected by the microphone of the mobile terminal, and the first sound signal includes all sounds collected by the microphone in real time, such as human voice, music played by audio equipment, and the like. The first sound signal is obtained for further processing.
[0035] Step 102, calculating the short-term zero-crossing rate of the first sound signal.
[0036] In the embodiment of the present invention, the short-term zero-crossing rate of the first sound signal is calculated. Knownly, the zero-crossing rate (zero-crossing rate, ZCR) refers to the ratio of a sign change of a signal, for example, the signal...
no. 2 example
[0051] Such as figure 2 Shown is a flowchart of the second embodiment of the sound signal processing method of the present invention. The processing method of the sound signal comprises:
[0052] Step 201, acquiring a first sound signal collected by a microphone of a mobile terminal.
[0053] Step 202, calculating the short-term zero-crossing rate of the first sound signal.
[0054] Step 203, removing the low-frequency part and the high-frequency part of the first sound signal to obtain a second sound signal.
[0055] Steps 201 to 203 are the same as the corresponding steps in the first embodiment of the sound signal processing method of the present invention, and will not be repeated here.
[0056] Step 204, performing fast Fourier transform on the second sound signal to obtain spectrum data of the second sound signal.
[0057] In the embodiment of the present invention, since the Fourier transform expresses various forms of signals with sinusoidal signals, the spectral da...
no. 3 example
[0080] Such as image 3 Shown is a structural block diagram of the first embodiment of the mobile terminal of the present invention. The mobile terminal 300 can implement the steps of the first embodiment of the sound signal processing method of the present invention, wherein the mobile terminal 300 includes a first acquisition module 301, a calculation module 302, a first filter module 303, and a second acquisition module 304 , a mute module 305 , a third acquisition module 306 , a second filter module 307 and an amplification module 308 .
[0081] The first obtaining module 301 is connected with the computing module 302 and is used for obtaining the first sound signal collected by the microphone of the mobile terminal.
[0082] In the embodiment of the present invention, the first sound signal is collected by the microphone of the mobile terminal, and the first sound signal includes all sounds collected by the microphone in real time, such as human voice, music played by au...
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