samples | 用于填充音频样本的数组。其长度必须为 2 的幂数。 |
channel | 用于采样的声道。 |
window | 采样时使用的 FFTWindow 类型。 |
提供监听器(主)的频谱数据块。
将向 samples 参数指定的数组填充请求的数据。
值的数量(样本数组的长度)必须为 2 的幂数,即 128/256/512 等。最小值为 64,最大值为 8192。
使用 window 可减少频率区间/频带之间的泄漏。
注意,窗口类型越复杂,品质越好,但会降低速度。
该函数将使用 AudioSettings.outputSampleRate 中指定的采样率,而不是为音频剪辑指定的采样率。
另请参阅:AudioListener.GetOutputData、AudioSource.GetSpectrumData、AudioSource.GetOutputData。
using UnityEngine;
[RequireComponent(typeof(AudioListener))] public class GetSpectrumDataExample : MonoBehaviour { void Update() { float[] spectrum = new float[256];
AudioListener.GetSpectrumData(spectrum, 0, FFTWindow.Rectangular);
for (int i = 1; i < spectrum.Length - 1; i++) { Debug.DrawLine(new Vector3(i - 1, spectrum[i] + 10, 0), new Vector3(i, spectrum[i + 1] + 10, 0), Color.red); Debug.DrawLine(new Vector3(i - 1, Mathf.Log(spectrum[i - 1]) + 10, 2), new Vector3(i, Mathf.Log(spectrum[i]) + 10, 2), Color.cyan); Debug.DrawLine(new Vector3(Mathf.Log(i - 1), spectrum[i - 1] - 10, 1), new Vector3(Mathf.Log(i), spectrum[i] - 10, 1), Color.green); Debug.DrawLine(new Vector3(Mathf.Log(i - 1), Mathf.Log(spectrum[i - 1]), 3), new Vector3(Mathf.Log(i), Mathf.Log(spectrum[i]), 3), Color.blue); } } }
numSamples | 值的数量(样本数组的长度)。必须为 2 的幂数。最小值为 64,最大值为 8192。 |
channel | 用于采样的声道。 |
window | 采样时使用的 FFTWindow 类型。 |
已弃用的版本。返回监听器(主)的频谱数据块。
该函数变体在每次调用时分配一个新的数组。为获得更好的性能,请使用无分配版本。
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.