A method and system for displaying song rhythm
A display method and song technology, applied in the direction of electroacoustic musical instruments, instruments, etc., can solve the problem of not being able to reflect the rhythm of music in the most intuitive and accurate way, and achieve the effect of good visual enjoyment and active music atmosphere.
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Embodiment 1
[0089] Please refer to figure 1 , figure 2 , Figure 4 , Figure 5 and Figure 6 , Embodiment 1 of the present invention is:
[0090] Provides an audio spectrum that demonstrates the rhythm of the music, including:
[0091] S1: Obtain an audio data of a song according to a preset collection period;
[0092] During the music playing process, the music is recorded, and the acquisition cycle (sampling rate) is set to 48K to obtain PCM audio data, and the PCM audio data is sent to the application layer for processing. Due to the fixing of the acquisition period, the time from acquisition to processing is also fixed, that is, the number of beats obtained is fixed. In the present invention, what we want to extract is the number of notes (beats) contained in the above-mentioned fixed number of beats. Number), that is, the beat value, which reflects the rhythm of the music.
[0093] S2: Obtain the frequency amplitude of the audio data;
[0094] Specifically, preferably, the f...
Embodiment 2
[0139] Please refer to image 3 , the second embodiment of the present invention is:
[0140] A digital audio-visual system, including a set-top box and a display screen, the set-top box is connected to the display screen; the set-top box includes a first main board and a second main board; the first main board includes a preset module 1 and a first acquisition module 2;
[0141] The second motherboard includes a second acquisition module 3, and the second acquisition module 3 may specifically include a first acquisition unit, a second acquisition unit, and a third acquisition unit;
[0142] The preset module 1 is used to acquire an audio data of a song according to a preset acquisition period, and a display mode of a preset frequency spectrum;
[0143] The first acquiring module 2 is configured to acquire the frequency amplitude of the audio data, and send the frequency amplitude to the second main board;
[0144] The second acquisition module 3 is used to acquire the beat ...
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