## 基于内容的音乐推荐系统设计与开发
### 设计结构
![系统结构](picture/系统结构.png)
### 数据处理
需要对标签数据清洗以及将音频信号转化为频谱信号。本次数据集采用公开音频数据集GTZAN,其中包含了10种不同风格的音乐,每一种音乐都包含100个音频文件,每个音频文件都是30秒。同时需要将音频信号转化为频谱信号,本论文将转化为梅尔频谱,直接使用pytorch的torchaudio中的函数即可快速转化。
![数据处理流程](picture/数据处理流程.png)
- 将音频信号转化为梅尔频谱
梅尔频谱图是将频率转换为梅尔刻度的频谱图。使用梅尔频谱可以起到压缩数据、数据拥有更多的表征能力,同时有论文表明与传统的傅里叶变化相比,转化为梅尔频谱的样本可以提高训练的准确率。
![梅尔频谱](picture/梅尔频谱.png)
### 神经网络
本项目选用卷积神经网络AlexNet。一个是对于初学者有较好较多的学习点,另一个是网络比较简单,对于这个小样本集有比较良好的效果。
- AlexNet 的网络结构
![AlexNet](picture/AlexNet.png)
- 单样本的训练流程
![image-20220528083702653](picture/单样本的训练流程.png)
### 音乐推荐系统
使用Django实现推荐系统的功能,提供前后端交互页面。
![image-20220528083920090](picture/推荐系统设计.png)
> 项目体验地址:https:// fishei.cn/project
![image-20220528084045417](picture/前端展示页面.png)
### 如何使用推荐功能
- 点击爱心,将会对本首歌进行推荐
![image-20220528084221229](picture/推荐1.png)
- 在推荐列表中将展示相似度最高的5首歌曲(具体原理我将在Bilibili描述)
![image-20220528084421349](picture/推荐2.png)
### 如何使用本项目
- 下载数据集
> OSS流量要钱,那我就放在阿里云盘了:「GTZAN」https://www.aliyundrive.com/s/dQG715hETzr
- 训练模型
> 训练模型的代码为Jupyter Notebook格式,如果大家电脑有GPU那就在自己电脑上训练就可以了,如果没有,推荐大家使用Kaggle。
>
> https://www.kaggle.com/ 每周大概有40多小时白嫖的GPU时长,无需翻墙,自认为比colab好用一些。
根目录下 **文件 [recommend.ipynb](./recommend.ipynb) 即为训练代码,训练后生成模型参数文件 best_model_okk.pth**
- 构建Django前后端
根目录下 **文件 [recommend](./recommend) 即为 Django 项目,记得将GTZAN数据集文件放在目录recommend/music/static/GTZAN下**
接下来即可使用pycharm启动项目
- 项目部署
> 如何对项目部署,这块内容我之后会在Bilibili发布
![image-20220528092401838](picture/项目部署.png)
### 其他
前端页面参考项目:https://github.com/Ezenlee/WebMusicPlayer
音频处理学习:https://www.youtube.com/watch?v=gp2wZqDoJ1Y&list=PL-wATfeyAMNoirN4idjev6aRu8ISZYVWm
没有合适的资源?快使用搜索试试~ 我知道了~
温馨提示
项目选用卷积神经网络AlexNet。一个是对于初学者有较好较多的学习点,另一个是网络比较简单,对于这个小样本集有比较良好的效果。 - AlexNet 的网络结构 ![AlexNet](picture/AlexNet.png) - 单样本的训练流程 ![image-20220528083702653](picture/单样本的训练流程.png) ### 音乐推荐系统 使用Django实现推荐系统的功能,提供前后端交互页面。
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