如何高频播放wav文件?
您对将我的 wav 音频数据转换为高频播放有什么想法吗? 我正在创建一个以 16-20khz 频率播放旋律 wav 文件的模块。
有什么想法吗?
通
Do you have any idea on converting my wav audio data to high frequency playback.
I am creating a module that plays a melody wav file in 16-20khz frequency.
any idea?
-tong
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有几种不同的方法可以做到这一点,这取决于您是否有任何想要保留的时间信息,或者您是否可以有效地提高采样率,以便扩大频率(并缩小持续时间)。
您没有提到任何有关操作系统、编程语言、声音 API 等的内容,因此不可能给出具体的解决方案,但如果您的声音 API 允许您更改播放速率,那么您可能可以通过合适的比例来扩展它因素。如果没有,那么您将需要重新采样声音才能达到相同的效果。有很多第三方库可用于重新采样(上采样/下采样)。
如果您需要保留时间信息,那么事情会变得有点棘手,您需要查看音调变换算法,例如相位声码器。
There are several different ways of doing this and it will depend whether you have any temporal information that you want to preserve, or whether you can just effectively increase the sample rate so that the frequency is scaled up (and the duration scaled down).
You didn't mention anything about OS, programming language, sound API, etc, so it's impossible to give specific solutions, but if your sound API allows you to change the playback rate than you may just be able to scale this up by a suitable factor. If not then you will need to resample the sound to achieve the same effect. There are plenty of third party libraries out there for resampling (upsampling/downsampling).
If you need to preserve temporal information then things get a little trickier and you'll need to look at pitch shifting algorithms, e.g. phase vocoder.