Electric vehicle low-speed pedestrian warning tone design method and system, terminal and storage medium
A design method and technology of prompt sound, applied in speech analysis, sound input/output, instruments, etc., can solve problems such as prompt sound distortion, and achieve the effect of solving prompt sound distortion problem.
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Embodiment 1
[0072] figure 1 It is a flow chart of a method for designing a warning sound for low-speed pedestrians in an electric vehicle according to an exemplary embodiment. The method is used in a terminal, and the method includes the following steps:
[0073] Step 101, obtaining the frequency response characteristic curve of the white noise signal, the frequency response characteristic curve at the plane of the pedestrian warning speaker, the frequency response characteristic curve at the plane of the sound source speaker, and the frequency response characteristic curve at the front end of the sound source speaker;
[0074] Step 102, through the frequency response characteristic curve of the white noise signal, the frequency response characteristic curve at the plane of the pedestrian warning speaker, the frequency response characteristic curve at the plane of the sound source speaker, and the frequency response characteristic curve at the front end of the sound source speaker vehicle ...
Embodiment 2
[0104] figure 2 It is a flow chart of a system transfer function-based method for designing an electric vehicle low-speed pedestrian notification sound according to an exemplary embodiment. The method is used in a terminal, and the method includes the following steps:
[0105] Step 201, obtaining the frequency response characteristic curve of the white noise signal and the frequency response characteristic curve at the plane of the pedestrian warning speaker;
[0106] Such as image 3 As shown, in the full anechoic room, the pedestrian alarm is fixed on the baffle, and the size of the baffle meets GB / T12060.5 sound system equipment, so that the axis of the speaker is parallel to the ground. A microphone is fixed on the front axis of the speaker at a distance of 1m from the center plane diaphragm of the speaker. The microphone is connected to the test front-end, and the front-end analysis frequency bandwidth is set to 20480Hz. Calibrate the microphone with a calibration dev...
Embodiment 4
[0147] Figure 14 It is a structural block diagram of a terminal provided in an embodiment of the present application, and the terminal may be the terminal in the foregoing embodiments. The terminal 400 may be a portable mobile terminal, such as a smart phone or a tablet computer. The terminal 400 may also be called user equipment, portable terminal and other names.
[0148] Generally, the terminal 400 includes: a processor 401 and a memory 402 .
[0149]The processor 401 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 401 can adopt at least one hardware form in DSP (Digital Signal Processing, digital signal processing), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array, programmable logic array) accomplish. The processor 401 may also include a main processor and a coprocessor, the main processor is a processor for processing data in the wake-up state, an...
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