From 43a97878ce14b72f0981164f87f2e35e14151312 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 11:22:09 +0200 Subject: Adding upstream version 110.0.1. Signed-off-by: Daniel Baumann --- .../tests/webaudio/resources/mix-testing.js | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 testing/web-platform/tests/webaudio/resources/mix-testing.js (limited to 'testing/web-platform/tests/webaudio/resources/mix-testing.js') diff --git a/testing/web-platform/tests/webaudio/resources/mix-testing.js b/testing/web-platform/tests/webaudio/resources/mix-testing.js new file mode 100644 index 0000000000..63c8e1aca6 --- /dev/null +++ b/testing/web-platform/tests/webaudio/resources/mix-testing.js @@ -0,0 +1,23 @@ +let toneLengthSeconds = 1; + +// Create a buffer with multiple channels. +// The signal frequency in each channel is the multiple of that in the first +// channel. +function createToneBuffer(context, frequency, duration, numberOfChannels) { + let sampleRate = context.sampleRate; + let sampleFrameLength = duration * sampleRate; + + let audioBuffer = + context.createBuffer(numberOfChannels, sampleFrameLength, sampleRate); + + let n = audioBuffer.length; + + for (let k = 0; k < numberOfChannels; ++k) { + let data = audioBuffer.getChannelData(k); + + for (let i = 0; i < n; ++i) + data[i] = Math.sin(frequency * (k + 1) * 2.0 * Math.PI * i / sampleRate); + } + + return audioBuffer; +} -- cgit v1.2.3