iPhone上的OpenAL音调生成 [英] OpenAL tone generation on iPhone

问题描述

因此，我一直在寻找一种使用OpenAL在iPhone上产生可变音的方法，问题是Apple弃用了OpenAL的ALUT部分，该部分具有alutCreateBufferWaveform对此非常适合.我想知道是否有人知道如何使用iPhone SDK上的OpenAL制作音调生成器.我需要的是能够不断重复产生特定频率的能力.

So I have been looking around for some time now on a way to produce a variable tone on the iPhone using OpenAL, the issue being the Apple has deprecated the ALUT part of OpenAL that has the alutCreateBufferWaveform that would be perfect for this. I was wondering if anyone had any idea how to make a tone generator using OpenAL on the iPhone SDK. All I need is the ability to produce a certain frequency tone consistantly over and over again.

这是不得已的方法，如果听起来有点愚蠢，请对不起.

This is a last resort so sorry if it sounds kind of stupid.

推荐答案

这并非您真正想要的，但是它可以产生类似的效果.

This isn't exactly what you are looking for, but it can create a similar effect.

我使用了本教程

http://benbritten.com/2008/11 /06/在iPhone上打开声音/

创建一个可以播放不同级别的预录声音的引擎.因此，即使我必须播放现有* .caf文件中的声音，我也可以调制音调并控制循环，以便产生所需的任何频率，长度或音量.

to create an engine that could play a prerecorded sound at different levels. So even though I have to play the sound from an existing *.caf file, I can modulate the pitch and control looping so it produces any frequency, length, or volume I'm looking for.

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